1999 модельный год
BRAKE ROUGHNESS OR PEDAL PULSATION WHEN THE BRAKES ARE APPLIED
Date: 08/98
Bulletin # 050398
Model year(s): 1999
Description: Superceded by 0500302B dated 05/13/02).
INTERMITTENT OPERATION OF THE POWER DOOR LOCKS, RKE AND POWER WINDOWS
Date: 08/30/98
Bulletin # 084798
Model year(s): 1999
Description: Intermittent and erratic operation of the power door locks, Remote Keyless Entry (RKE) and Power Windows. This can be the result of a communication error in the Door Switch Module located in the passengers' door. Revised programming in the Body Control Module has been developed to address this issue.
Details:
Due to the intermittent nature of this condition, diagnosis may be difficult. If customers complain of intermittent or erratic operation of any of the systems listed above, perform the Repair Procedure.
OXYGEN SENSOR OPERATING DIFFERENCES
Date: 09/25/98
Bulletin # 183198
Model year(s): 1999
Description: Oxygen sensor operating differences. NOTE: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 4.7L ENGINE.
Details: To enhance the idle quality of the 4.71- engine, the 02 sensor will be biased rich when the engine is at idle and the transmission is in Park or Neutral. The upstream goal voltage during this time will be between 0.7 and 0.85 volts. The 02 sensor should not be condemned for slow or no switching while at idle and in Park or Neutral. 02 switching tests should be performed off idle in any gear, or at idle in a forward gear range. During these conditions, the 02 sensor goal voltage will be in the normal (0.5 volt)
range.
FLASH PROGRAMMING FAILURE RECOVERY
Date: 09/25/98
Bulletin # 183298
Model year(s): 1999
Description: Flash programming failure recovery.
Details: Occasionally a flash update procedure may not complete properly and/or the diagnostic equipment may lock up during the procedure.
FLUID LEVEL INSPECTION 45RFE TRANSMISSION
Date: 10/16/98
Bulletin # 211398
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 45RFE
TRANSMISSION. The 45RFE transmission is newly introduced for the 1999 model year and has some unique service differences compared with its predecessors. Following are some items to consider during service.
Details: Fluid Level Inspection:
1. Warm the fluid by operating the vehicle.
2. Measure the transmission fluid temperature using the DRB III®.
3. Move the gear selector through drive and reverse. Place the gear selector in Park
or Neutral. If in neutral, set the parking brake.
4. Check the fluid level against the fluid level/temperature chart.
NOTE: WHEN COLD (BELOW 10° C {50° F}) THE FLUID LEVEL WILL NOT REGISTER ON THE DIPSTICK
Accurate fluid level is difficult to determine cold. Initially add only 5 quarts of fluid during the refill procedure. This amount will allow the transmission to operate until warm and once the fluid temperature is known, the final amount can be added without overfilling the transmission. Additionally, during this procedure pressure switch and/or loss of prime DTC's may be set. If they are, erase them using the DRB III® before returning the vehicle to the customer.
INSPECTION MAINTENANCE TESTING - OBD II "CARB" READINESS
Date: 10/98
Bulletin # 250298
Model year(s): 1999
Description: I/M (Inspection Maintenance) testing - OBD II "CARB" readiness monitor information.
Details: Some states that require I/M inspections are beginning to include OBD II "CARB" Readiness as a prerequisite to an I/M test. OBD Readiness tells an I/M station if the OBD II systems have run their self test. Owners, in those states that use OBD Readiness, may be denied an I/M test if one or more of the Readiness monitors read "NO" or in other words the OBD II monitors have not run their tests. It is important to understand that the MIL will not be illuminated because OBD Readiness reads "NO". MIL illumination happens when an actual malfunction or failure of a monitored emissions system occurs. It is possible to have MIL illumination for a detected failure while at the same time having a "NO" for an OBO Readiness monitor. NOTE: MIL ILLUMINATION INDICATES ADDITIONAL PROBLEMS WITH THE VEHICLE. FURTHER DIAGNOSIS AND REPAIR WILL BE REQUIRED BEFORE PROCEEDING FURTHER WITH THIS BULLETIN. OBD Readiness that reads "NO" can be caused by the following: PCM reprogramming, PCM replacement, fault code erasure, battery disconnects and/or replacement. If any of the above items occur before an I/M test, a good chance exists that one or more of the monitors will read "NO" for OBD Readiness.
REVISED FRONT BAND ADJUSTMENT FOR 42RE TRANSMISSIONS
Date: 12/04/98
Bulletin # 211698
Model year(s): 1999
Description: Revised front band adjustment for 42RE transmissions.
Details: The final adjustment for the front band has been changed to 3 turns. Whenever performing this adjustment on a 1999 model 42RE transmission, be sure to only back off the adjusting screw 3 turns prior to torquing the lock nut. All other steps of the procedure are unchanged. Service manual revision pages will be sent at a later date to address this change.
QUICK LEARN CLUTCH VOLUME PROCEDURES ON 45RFE TRANSMISSIONS
Date: 12/04/98
Bulletin # 211498
Model year(s): 1999
Description: Quick learn clutch volume procedures on 45RFE transmissions.
Details: To prevent an incorrect clutch volume to be learned and cause potential shift quality problems, the following steps must be performed prior to running quick learn procedures.With the DRB III® Connected Start the engine and shift the transmission into drive. Leave the transmission in drive for a minimum of 5 seconds and then shift the
transmission into park. Initiate the quick learn procedure and follow all prompts given by the DRB III®. The above steps will purge any air that may be trapped in the underdrive clutch. A DRB III© feature enhancement will be added at a later date that will prompt for the above procedure to be completed prior to initiating the quick learn procedure.
FUEL FILLER CAP MAY STICK IN FILLER NECK
Date: 12/11/98
Bulletin # 140798
Model year(s): 1999
Description: Seal on fuel filler cap may stick in the filler neck, making the cap difficult to remove. THIS BULLETIN APPLIES TO VEHICLES BUILT BEFORE SEPTEMBER 21,
1998. VEHICLES BUILT AFTER THAT DATE ARE EQUIPPED WITH THE REVISED FUEL FILLER CAP.
Details: A new cap with a revised seal has been released to address this condition
NEW TRANSMISSION SIMULATOR TOOL
Date: 12/11/98
Bulletin # 211198
Model year(s): 1999
Description: A new transmission simulator (Miller special tool 8333) will soon be distributed to dealers. This new tool will help technicians make a more thorough, accurate, and timely diagnosis by distinguishing between electronic hardware failures and TCM/wiring harness failures.
SHUDDER AND LOW PITCHED, GRUNTING NOISE IN TRANSFER CASE
Date: 12/11/98
Bulletin # 211798 (superceded by 210999 June 04, 1999)
Model year(s): 1999
Description: A shudder and low pitched, grunting noise may be present in the transfer case. The condition is a slip/stick condition in the progressive clutch assembly. The condition may be present at slow speed, in tight steering maneuvers such as parking or a tight turn when backing out of a driveway. A revised fluid has been released to address this condition.If customers complain of this condition, perform the Repair Procedure.
SUNSHADE FABRIC DELAMINATES FROM SUBSTRATE ALONG EDGES
Date: 12/11/98
Bulletin # 236098
Model year(s): 1999
Description: Some vehicles may exhibit a condition where the sunshade fabric delaminates from the substrate along the edges of the sunshade. This delamination can be seen through the sunroof and/or can cause the sunshade to bind.
Details: Look at the sunshade to see if the fabric has delaminated from the substrate material. If the delamination is present, perform the Repair Procedure. This involves cleaning the substrate edges and re-glueing the fabric to the substrate with appropriate adhesives.
EVAPORATIVE PURGE SOLENOID CIRCUIT FAILURE (P0443)
Date: 12/18/98
Bulletin # 183598
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH GASOLINE
ENGINES BUILT PRIOR TO DEC. 18, 1998. Some vehicles may exhibit MIL illumination with DTC $12 (P0443) - EVAPORATIVE PURGE SOLENOID CIRCUIT FAILURE. This condition can be caused by electrical noise generated by the ignition switch.
Details: Using the Mopar Diagnostic System (MDSIMDS2) or the Diagnostic Scan Tool (DRB III®) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If other Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding
further with this bulletin. Following the Diagnostic Procedures Manual, check the
evaporative purge solenoid and circuit for proper operation. If no trouble is found, perform the Repair Procedure.
IDLE UNDERSHOOT OR DIE OUT DURING ENGINE STARTING
Date: 12/18/98
Bulletin # 183698
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH GASOLINE
ENGINES BUILT PRIOR TO DEC. 18, 1998. Some vehicles may exhibit an idle undershoot or die out during engine starting and may be caused by IAC lost steps. This condition is more likely to occur during cold weather, low battery voltage, cold engine start, and quick ignition key "On" - "Off' operation.
Details: Using the Mopar Diagnostic System (MDS/MDS2) or the Diagnostic Scan Tool (DRB III") with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no other problems are found, perform the Repair.
INADVERTENT ENGINE FLOODING DURING STARTING
Date: 12/18/98
Bulletin # 183798
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH GASOLINE
ENGINES BUILT PRIOR TO DEC. 18, 1998. Some consumers that inadvertently flood their engines during starting may try to perform a clear flood procedure to help start their vehicles. Currently this feature is not operational on the above models and if used may worsen the flooded condition.
Details: Using the Mopar Diagnostic System (MDS/MDS2) or the Diagnostic Scan Tool (DRB III®) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC's are present and the vehicle was brought in for a flooded condition, perform the Repair Procedure.
HIGH IDLE RPM DURING DECELERATION
Date: 12/18/98
Bulletin # 184098
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH 4.01L ENGINES BUILT PRIOR TO DEC. 18, 1998. Some vehicles may exhibit high idle RPM during deceleration and/ or parking lot maneuvers when the engine coolant temperature is greater than 103 c (217 f). The increased idle rpm will return to normal when the vehicle comes to a stop. Coolant temperatures greater than 103° C (217° F) are more noticeable in high ambient temperatures during stop and go traffic, or after towing.
Details: Using the Mopar Diagnostic System (MDS/MDS2) or the Diagnostic Scan Tool (DRB III®) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. Make sure the cooling system is working properly and verify that the engine temperature sensor values are valid. If no other problems are found, perform the Repair Procedure.
IDLE UNDERSHOOT CONDITION WHILE VEHICLE IS SLOWLY MOVING
Date: 12/18/98
Bulletin # 184198
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH FOUR WHEEL DRIVE AND A 2.5L, 4.OL, OR 4.7L ENGINE BUILT PRIOR TO DEC. 18, 1998. Some vehicles may exhibit an idle undershoot condition while the vehicle is slowly moving at 1 - 2 mph in low range four wheel drive with the throttle closed. This may result in an engine stumble condition and may be more noticeable during deceleration. Manual transmission vehicles may experience an idle speed overshoot under the same conditions.
Details: Using the Mopar Diagnostic System (MDS/MDS2) or the Diagnostic Scan Tool (DRB III©) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. Operate the vehicle in low range four wheel drive as described above. If the undershoot/overshoot condition is experienced, perform the Repair Procedure.
LONG CRANK TIMES
Date: 12/18/98
Bulletin # 184298
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH AN
AUTOMATIC TRANSMISSION AND 4.7L ENGINE BUILT PRIOR TO DEC. 18, 1998. Some vehicles may exhibit long crank times (1 to 1.5 seconds) with engine temperatures between 70 - 600 C (46° - 140° F). This condition may be intermittent.
Details: Using the Mopar Diagnostic System (MDS/MDS2) or the Diagnostic Scan Tool (DRB III") with the appropriate Diagnostic Procedures Manual, verify all engineltransmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. Verify that the vehicle has proper fuel pressure. If no problems are found, perform the Repair Procedure.
ENGINE SAG WHEN THE A/C COMPRESSOR CYCLES
Date: 12/18/98
Bulletin # 184398
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 4.0L
ENGINE BUILT PRIOR TO DEC. 18, 1998. Some vehicles may exhibit an engine sag when the A/C compressor cycles. The driver may need to change throttle position to maintain constant vehicle speed.
Details: Using the Mopar Diagnostic System (MDS/MDS2) or the Diagnostic Scan Tool (DRB III') with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. Test the vehicle by driving it with the A/C engaged and disengaged. If the sag is felt during A/C compressor cycling and throttle position change is required to maintain vehicle speed, perform the Repair Procedure.
SAG/ HESITATION FOLLOWING A COLD ENGINE START
Date: 12/18/98
Bulletin # 184498
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH AN
AUTOMATIC TRANSMISSION AND 4.OL ENGINE BUILT PRIOR TO DEC. 18,
1998. Some vehicles may exhibit a sag/ hesitation following a cold engine start or partial cool down re-start, could be caused by the oxygen sensor entering closed loop prematurely/is experienced within first 30-40 seconds into the drive cycle.
Details: Using the Mopar Diagnostic System (MDS/MDS2) or the Diagnostic Scan Tool (DRB III©) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. Allow the vehicle to soak for 1 hour. Start the vehicle and let the engine idle. Drive away when closed loop commences (approximately 30 to 40 seconds after start). If the sag/hesitation is experienced, perform the Repair Procedure.
ENGINE VIBRATION, "BEAT" LIKE SOUND, OR "DRONE"
Date: 12/18/98
Bulletin # 184598
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH AN
AUTOMATIC TRANSMISSION AND 4.0L OR 4.7L ENGINE BUILT PRIOR TO
DEC. 18, 1998. Some vehicles may exhibit an engine vibration, repeating "beat" like sound, or a "drone" like sound with a warm engine during idle. The source of this vibration/noise may be induced by the electric cooling fan.
Details: Using the Mopar Diagnostic System (MDS/MDS2) or the Diagnostic Scan Tool (DRB III®) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin.
IDLE UNDERSHOOT OR DRIVEWAY DIE OUT
Date: 12/18/98
Bulletin # 184698
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH AN
AUTOMATIC TRANSMISSION AND 4.0L ENGINE BUILT PRIOR TO DEC. 18,
1998. Some vehicles may exhibit an idle undershoot or driveway die out when the transmission is placed from Park or neutral into drive or reverse.
Details: Using the Mopar Diagnostic System (MDS/MDS2) or the Diagnostic Scan Tool (DRB III®) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no other problems are found, perform the Repair Procedure.
WATER LEAK AT THE REAR LIFT GATE FLIPPER WINDOW
Date: 12/18/98
Bulletin # 236198
Model year(s): 1999
Description: Some vehicles may exhibit a water leak at the rear liftgate flipper window.
Details: This leak will generally only occur during a car wash utilizing high pressure spray. An improved seal has been developed which will address this condition. If a vehicle exhibits this condition perform the repair procedure.
Parts required:
55136053AC Seal, flipper glass
A/C REFRIGERANT CHARGE
Date: 01/29/99
Bulletin # 240199
Model year(s): 1999
Description: A/C refrigerant charge.
Details: The refrigerant charge and system oil specification used in production for all Grand Cherokees has been reduced. Vehicles built September 16, 1998 and later will contain 24 ounces (1.5 lbs.) of refrigerant and 170 cc (5.8 oz.) of refrigerant
oil. Earlier built vehicles contained 26 ounces (1.6 lbs.) of refrigerant and 220 cc (7.4 oz.) of refrigerant oil. The A/C system label reflects these specifications. When servicing vehicles built prior to September 16, the new specifications should also be used. The reduction in oil and refrigerant was implemented to improve A/C system performance. New A/C system labels are available (p/n 55116446AA) and should be installed when the A/C system is serviced.
A/C COMPRESSOR SERVICE PRECAUTIONS
Date: 01/29/99
Bulletin # 240299
Model year(s): 1999
Description: A/C compressor service precautions. When service requiring the removal of the A/C compressor is performed, care must be used when installing the lower compressor mounting bolt (See Figure 1). The torque specification on this bolt is 54 Nm (40 ft. Lbs.). Excessive tightening of the bolt can damage the engine block. Do not use impact tools in this area.
Details: A new bolt has been released which has a break away feature incorporated to protect the engine block. This bolt, p/n 53013390AA, should be installed any time the A/C compressor is serviced.
SHIFT QUALITY IMPROVEMENTS
Date: 02/12/99
Bulletin # 210299
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 45RFE
TRANSMISSION. Several improvements in shift quality have been made to address the following concerns:
1. Slow (1 1/2 to 2 seconds) park/neutral to drive engagement. This condition may
occur after the first key "ON" or once after subsequent key "ON's" with a soak time
of several minutes or more.
2. Neutral coastdown bump at approximately 8 miles per hour. This may occur if a
customer coasts to a stop with the transmission in neutral.
3. Neutral to drive engagement harshness with the vehicle rolling between 5 and 10
miles per hour. This may occur if a customer is coasting in neutral within the
specified speed range and shifts the transmission into drive.
4. Harsh (light throttle) 1-2 shift between 10 and 15 miles per hour.
5. Low speed (10 - 12 mph) light throttle tip in bump.
6. Drone at approximately 40 - 45 mph in 4th gear with EMCC engaged.
Details: Using the Mopar Diagnostic System (MDS/MDS2) and or the Diagnostic Scan Tool (DRB III®) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC's are present and the customer has described any of the above symptoms, perform the Repair Procedure.
SLOW FUEL FILL / REPEATED FUEL PUMP NOZZLE SHUT OFF
Date: 02/19/99
Bulletin # 140199
Model year(s): 1999
Description: Customers may experience slow fuel fill / repeated fuel pump nozzle shut off.
Details: If customers complain of this condition, perform the Repair Procedure.
Parts required:
05016128AA Fuel filler tube
UNIVERSAL GARAGE DOOR OPENER RANGE
Date: 02/26/99
Bulletin # 080499
Model year(s): 1999
Description: This Bulletin Involves installing a supplemental antenna to the Electronic Vehicle Information Center (EVIC).
Details: If customer complains of a reduced operating range for the Universal Garage Door Opener, perform the Repair Procedure.
Parts required:
05015803AA Antenna
BRAKE SQUEAL PRESENT AT SPEEDS OVER 35 MPH
Date: 02/26/99
Bulletin # 050199
Model year(s): 1999
Description: Brake squeal, involves installing revised rear brake pads.
Details: A brake squeal may be present at speeds over 35 mph with light brake pedal pressure. The condition will often be present for the first few miles when the brake pads are cold and will diminish as the pads warm up.
Parts required:
05011970AB Brake pad set, rear
POWER DISTRIBUTION CENTER (PDC) SERVICE
Date: 03/12/99
Bulletin # 080799
Model year(s): 1999
Description: Information regarding Power Distribution Center (PDC) service.
Details: A repair kit, p/n 05014460AA, has been released which will provide a method for repairing the PDC when internal damage has occurred. This will eliminate the need to replace the entire engine compartment wire harness, in most situations where an electrical problem has been traced to an internal problem in the PDC. The kit provides replacement components for the modules located in the PDC. Special Tool number 6680 is required for these repairs. This tool is available through Pentastar Service Equipment and is a required dealer tool.
Parts required:
05014460AA PDC repair kit
FRONT POWER WINDOW TILTS OR TIPS FORWARD IN THE OPENING WHEN RAISED
Date: 03/21/99
Bulletin # 231599
Model year(s): 1999
Description: This bulletin involves repositioning the power window regulator.
Details: The front power window may tilt or tip forward at the top of the channel. This condition can lead to complaints of wind noise or water leaks at the upper rear corner of the glass. Operate the power windows. If the windows are slow or appear to be binding in the channel, perform the Repair Procedure.
Repair procedure:
1. Remove the door trim panel.
2. Remove the upper front door window regulator fastener.
3. Loosen, but do not remove the remaining window regulator attaching screws (Upper
Middle and Lower).
4. Push the door glass rearward as far as it will move. While holding the glass in the rearward position, slide the window regulator forward. Tighten the upper rear
fastener, followed by the middle and lower fasteners.
5. Install the upper front fastener.
6. Install the door trim panel.
ERRONEOUS MIL ILLUMINATION
Date: 04/30/99
Bulletin # 180799
Model year(s): 1999
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A RE -
SERIES AUTOMATIC TRANSMISSION BUILT BEFORE DECEMBER 18, 1999.
Details: Some vehicles may exhibit a MIL illumination with DTC $A8 (P1763) - (Governor Pressure Sensor Volts Too High). The vehicle operator may experience slower
than normal accelerations because the transmission may temporarily enter third. gear
"Limp-In" Mode. The "Limp-In" Mode may last until the vehicle owner cycles the ignition key. The technician may not detect a problem with the automatic transmission during a diagnostic test or test drive.
The MIL is caused by an increase in hydraulic pressure. The increased hydraulic pressure is the result of a new valve body machining process.
Vehicles built after January 1, 1998 have an automatic transmission with this new process valve body. Vehicles built before January 1, 1998 may experience this condition if either the transmission valve body or the entire automatic transmission was replaced with components manufactured after January 1, 1998.
BUZZ, WHINING, OR MOANING LIKE NOISE FROM COLD TRANSMISSION (REVERSE GEAR)
Date: 04/30/99
Bulletin # 210899
Model year(s): 1999
Description: Vehicles exhibiting buzz, whining, or moaning like noise from cold transmission when reverse gear is selected.
Details: Some vehicles may exhibit an intermittent noise from the transmission when reverse gear is selected. This noise has been described as a "buzz", whining", or "moaning" like noise. The noise is most noticeable when transmission fluid temperature is below 38 C. (100 F.). The condition is caused by a resonance of the transmission regulator valve system.
Other items may cause regulator valve resonance, including air ingestion into the valve body or out of specification parts. These two items may be the result a possible cracked pump housing, a torn pump gasket, an under filled transmission, a restricted fluid filter or cooler flow, or an out of specification valve and/or valve body.
REDUCED AIRFLOW FROM CENTER OUTLETS
Date: 04/30/99
Bulletin # 240799
Model year(s): 1999
Description: Reduced airflow from center outlets.
Details: The heater A/C housing on these vehicles is sealed with a foam seal at the instrument panel. This seal can become loose or out of position. If this occurs, an air leak will be present in this location. This will result in reduced airflow from these outlets, be sure to check this seal. This can be accomplished by removing the center outlets and reaching into the opening with your hand. This seal can usually be repositioned without disassembly of the instrument panel.
WHISTLING SOUND FROM HEATER BLOWER
Date: 05/14/99
Bulletin # 240899
Model year(s): 1999
Description: Conditions with whistling sound from heater blower with the fan on high speed and temperatures below freezing.
Details: If a vehicle exhibits this condition, perform the Repair Procedure.
Parts required:
05016172AA Baffle
05012701AB Blower wheel
VEHICLE START AND STALL OR VEHICLE NO-START
Date: 05/21/99
Bulletin # 081499
Model year(s): 1999-2000
Description: Conditions with vehicle start and stall or vehicle no-start. A vehicle start and stall or no-start condition may exist from the interaction between a SKIS key and a Mobil Speedpass®. This condition occurs during cranking, when the Mobil Speedpass cylinder is held immediately adjacent to the key being used to start the vehicle.
Details: NOTE: THIS CONDITION DOES NOT OCCUR BY THE MOBIL SPEEDPASS® CYLINDER
SIMPLY BEING ATTACHED TO THE SAME KEY RING. This bulletin applies to vehicles equipped with a sentry key immobilizer system (SKIS). If a stall or no-start condition exists due to this problem, the Vehicle Theft Security System (VTSS) indicator light will flash and the vehicle will stall after 2 seconds of running. The'Sentry key Immobilizer Module (SKIM) will set either the "Transponder Comm Failure", or a "Transponder CRC Failure" fault code. To diagnosis this condition, remove the Mobil Speedpasse from the key ring and attempt to start the vehicle. If the vehicle starts and remains running, SKIS key interaction with the Mobil Speedpasse was the cause. This condition will not cause a vehicle to stall after it has been running normally. If a start and stall or no-start condition continues once the Mobil Speedpass® is removed, continue with the appropriate diagnostic procedures.
In cases where SKIS key interaction with the Mobil Speedpasse is causing the condition, instruct the customer to slightly separate the SKIS key and Mobil Speedpass® when starting the vehicle. There are no long-term adverse effects on any of the components once the Mobil Speedpasse is removed from the SKIS operating area.
DIAGNOSTIC TROUBLE CODES CAUSED BY OPEN FUSE
Date: 05/21/99
Bulletin # 180999
Model year(s): 1999
Description: Information pertaining to common diagnostic trouble codes caused by an open fuse.
Details: Recent quality analysis has revealed an issue with repeated repairs for the same Diagnostic Trouble Code (DTC). The DTC may be due to an overlooked open circuit used to power the component in question. In most instances, either the circuit fuse has been erroneously removed or the fuse itself has an open (blown).
The component in question, and its circuit, are often protected by two fuses. It is usually the lower amperage fuse that is either missing or open.
The lower amperage fuse is positioned electrically in the circuit between the component in question and either a relay (Auto Shut Down, 02 heater) or the ignition switch. The lower amperage fuse will be located either in the underhood Power Distribution Center (PDC) or in the instrument panel Junction Block.
The lower amperage fuse is often missing because it was removed erroneously for use in another low current circuit. If the lower amperage fuse is open (blown), then the circuit and component in question must be checked for an electrical short. Check to make sure that the open fuse was not exchanged with another fuse or was damaged by an installed accessory.
NOTE: IF AN OXYGEN SENSOR IS REPLACED, VERIFY THAT THE CIRCUIT FUSE
IS GOOD. AN OXYGEN SENSOR HEATER, WHEN DAMAGED OR OVERHEATED, MAY SHORT THE CIRCUIT AND CAUSE THE FUSE TO OPEN (BLOW).
The higher amperage fuse should be checked, but is not normally the cause of the DTC. The higher amperage fuse is located in the underhood PDC. It is positioned electrically in the circuit between the battery and either the relay (Auto Shut Down, 02 heater) or the ignition switch.
DOOR WEATHER SEAL RETENTION
Date: 05/21/99
Bulletin # 231499
Model year(s): 1999
Description: The door weather seals may not fit the door flange properly. This can cause loose or sagging door seals and the associated wind and water leaks.
Details: This bulletin involves installing foam tape on door seal flange to assure proper sealing and retention. Inspect the door weather seals. If the seals are loose or sagging and do not fit tightly on the flange, perform the Repair Procedure.
Parts required:
04318028 Foam Tape
ROOF RACK CROSS BAR SHIPPING LOCATION
Date: 05/21/99
Bulletin # 231799
Model year(s): 1999
Description: Information pertaining to roof rack cross bar shipping location.
Details: The rear cross bar on the roof rack is currently being moved to the full forward location prior to shipment from the assembly plant. This is being done to prevent damage to the cross bar when vehicles are loaded onto transports. The cross bar must be moved back to the rear most position on the roof rack rails prior to delivery to customers. Leaving the cross bar in the forward position can cause excessive air turbulence and the associated wind noise.
NOISY FRONT PROPELLER SHAFT
Date: 05/28/99
Bulletin # 030399
Model year(s): 1999
Description: Noisy front propeller shaft rear constant velocity joint.
Details: Applies to models built prior to March 14, 1999. While driving, a noise may be noticed coming from the front propeller shaft. The noise may sound like popping, snapping and/or grinding. A driveline vibration may also be noticed. Closer inspection of the front propeller shaft may reveal a loss of lubricant from the rear constant velocity (CV) joint. The loss of lubricant may be due to a torn CV joint boot.
The condition may be the result of an interface fit between the back of the rear CV joint and the end of the transfer case front output shaft. This interface fit may cause the vent hole on the back of the rear CV joint to become blocked (sealed over). If the vent on the joint becomes blocked, it may cause pressure to build within the joint which may result in damage to boot of the rear CV joint.
Parts required:
52099497AC Propeller shaft, front 4.0L
52099498AC Propeller shaft, front 4.7L
SHUDDER NOISE IN TRANSFER CASE
Date: 06/04/99
Bulletin # 210999 (supercedes 211798 dated 12/11/98)
Model year(s): 1999
Description: This bulletin involves a new transfer case fluid, a revised Repair Procedure, and a change to the Maintenance Schedules "A" and "B". VEHICLES BUILT ON OR AFTER APRIL 9, 1999 HAVE THE NEW TRANSFER CASE FLUID ALREADY INSTALLED IN THE NV 247 TRANSFER CASE FROM THE ASSEMBLY PLANT. A shudder and/or low pitched grunting noise may be present in the transfer- case. The condition is a slip/stick condition in the progressive coupling assembly. The condition may be present at slow speeds, and/or during tight steering maneuvers such as parking or backing out of a driveway.
Details: The new transfer case fluid has several different characteristics from that of ATF-4. Some of those characteristics are: a yellow color, a slightly higher viscosity, and a sweet (new vinyl like) odor. These characteristics may vary depending on how well the transfer case was drained prior to refill. THE RECOMMENDED MAINTENANCE INTERVAL FOR SCHEDULED SERVICE TO THE TRANSFER CASE FLUID IS CHANGED. FOR SCHEDULE "A" (FOR NORMAL OPERATING CONDITIONS), IT IS RECOMMENDED THAT THE TRANSFER CASE FLUID BE DRAINED AND REFILLED EVERY 22,550 MILES OR 18 MONTHS. FOR SCHEDULE "B" (OTHER THAN NORMAL OPERATING CONDITIONS) IT IS RECOMMENDED THAT THE TRANSFER CASE FLUID BE DRAINED AND REFILLED EVERY 21,000 MILES.
Parts required:
05016796AA Fluid, transfer case
RADIO CLOCK DEFEAT
Date: 06/11/99
Bulletin # 081899
Model year(s): 1999
Description: This situation can occur if any of the following radio part
numbers are removed from a 300M and are installed in a 1999 grand cherokee: 04858584AE/AF (RBN), 04858540AE/AF (RAZ), 04858516AC/AD (RBA), 04858514AD (RBJ).
Details: The same AM/FM/CD/Cassette player radio, p/n 04858540AF, (sales code RAZ), is used in both Grand Cherokee and 300M models. This radio contains a programmable clock feature, which is activated on WJ models. The clock in the radio on 300M models, which has a separate clock in the instrument panel, is deactivated via communication over the BUS with the Body Control Module (BCM). On 300M vehicles, the BCM sends a "Clock Defeat" message to the radio with every ignition cycle. Situations can arises where a radio with a defeated clock is removed from a 300M and is stored and later installed in a Grand Cherokee, the clock will not function in the Grand Cherokee.
A clock display program function has been added to the DRB III® that will provide the capability to turn the clock on.
INOPERATIVE OR INTERMITTENT REMOTE KEYLESS ENTRY TRANSMITTER
Date: 06/11/99
Bulletin # 081699A
Model year(s): 1999
Description: This bulletin involves replacing the RKE transmitter.
Details: (Superceded by bulletin # 080800 dated 03/17/00).
MATCH MOUNTING OF BRAKE ROTORS
Date: 06/18/99
Bulletin # 050599
Model year(s): 1999
Description: Information regarding match mounting of brake rotors.
Details: Effective April 1, 1999 brake rotors are now being match mounted to the hub/ bearing assembly. This was implemented to reduce brake pedal pulsation, which can be caused by rotor and/or hub/bearing lateral run out. The parts come into the assembly plant marked with yellow dots. A yellow dot on the end of the bearing stud marks the high point of the bearing/ hub and a yellow dot on the ring in the center of the rotor marks the low point of the rotor run out. The yellow dots are matched at assembly to minimize the lateral run out.
Whenever service is performed requiring rotor removal, it is recommended that this procedure be followed. In situations where yellow dots are not visible due to mileage accumulation, mark the rotor relative to a bearing stud and assemble the rotor in its original position. It is also recommended that on vehicles built prior to April 1, 1999, that the procedure outlined in Technical Service Bulletin Number 050299 for match mounting be followed. In this procedure, the rotor run out is measured with a dial indicator and the rotor position is changed on the hub to obtain the lowest lateral run out reading.
REVISED SUN ROOF EXPRESS OPEN POSITION
Date: 06/99
Bulletin # 082099
Model year(s): 1999
Description: Revised sun roof express open position feature.
Details: 1999 vehicles equipped with a sunroof contained an express open position feature. This feature limited the sunroof travel to stop approximately 4 inches before the full open position when the switch was depressed for less than one second. This position allowed the sunroof to operate at the quietest position relative to wind noise. This feature could be overridden by depressing the open switch a second time, which would open the window fully.
Effective with vehicles built after April 15, 1999, the ability to override the express open position will no longer be available. A permanent stop is now in place, which prevents the window from opening to the full open position regardless of switch operation. This also applies to MOPAR replacement parts manufactured after April 15, 1999. No attempts should be made to repair this condition.
OPERATION AND APPLICATION OF THE LEAK DETECTION PUMP MONITOR TEST
Date: 06/18/99
Bulletin # 181299
Model year(s): 1999
Description: Explains the operation and application of the Leak Detection Pump (LDP) monitor test.
Details: NOTE: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A LEAK
DETECTION PUMP (LDP). The original test (LDP Dealer Test Mode) functionality was eliminated in the DRB III ®. A new test has been released (LDP-MONITOR TEST) and is now incorporated into the Powertrain Control Module (PCM) software. The DRB III® can actuate this test by sending simple commands to the PCM.
Most new model (1999) vehicles were released with this test capability. Older models
may require a flash update to make this test available. Most of the older model
software has been released.
The best way to determine if the test is available is to connect the DRB III" and attempt to run the LDP Monitor Test found under ENGINE SYSTEM TESTS.
If the DRB III® does not show the test on the screen, or if a message appears - LDP
Monitor Test NOT Supported by PCM, it means the vehicle will require a flash update
to make the test available. As mentioned earlier, most of the software with this feature has been released. If a flash update is not available and the vehicle is LDP equipped, standard LDP leak test procedures as listed in the applicable diagnostic publications will have to be performed until the software becomes available.
As a reminder, the LDP MONITOR TEST should only be used to reproduce leak faults
and verify repairs that have been made to the evaporative system.
EXHIBITING AN ENGINE NO-START CONDITION
Date: 06/18/99
Bulletin # 181399
Model year(s): 1999
Description: This bulletin involves selectively erasing and reprogramming the JTEC Powertrain Control Module (PCM) (calibration change 99Cal18).
Details: THIS INFORMATION APPLIES TO VEHICLES BUILT BEFORE APRIL 27,
1999 AND NOT EQUIPPED WITH THE SENTRY KEY IMMOBILIZER (SKIM) SYSTEM. An engine no-start or an engine crank-start-die condition may exist with vehicles not equipped with SKIM. Diagnostic Trouble Codes P1685 "SKIM Invalid Key" and/or P1686 "No SKIM BUS Messages Received" may be present in the PCM.
This condition may be due to erroneously learning of SKIM by the PCM. In most cases,
the vehicle will start once the vehicle battery has been disconnected to reset the PCM.
Using the Mopar Diagnostic System (MDS2) and or the Diagnostic Scan Tool (DRB ills)
with the appropriate Diagnostic Procedures Manual, verify all engine/transrt~transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC's are present, and the above symptoms have been experienced, perform the Repair Procedure.
NOTE: WHENEVER A POWERTRAIN CONTROL MODULE (PCM) IS REPLACED DUE TO FAILURE, THE SOFTWARE OF THE REPLACEMENT CONTROLLER MUST BE VERIFIED FOR THE LATEST REVISION LEVEL. USE THE FLASH PROCEDURE TO UPDATE REPLACED CONTROLLERS AS NECESSARY.
DRONE LIKE NOISE DURING WARM ENGINE IDLING
Date: 06/18/99
Bulletin # 181499
Model year(s): 1999
Description: The vehicle driver may experience a drone like noise while the vehicle is idling at a stop. The drone like noise may be most noticeable when the engine is fully warmed and idling around 600 rpm. This bulletin involves selectively erasing and reprogramming the JTEC Powertrain Control Module (PCM) with new software (calibration change 99Call8). The new PCM software increases the vehicle warm engine idle speed to 640 rpm.
Details: NOTE: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 4.7L
ENGINE BUILT BEFORE APRIL 22, 1999. Using the Mopar Diagnostic System (MDS2) and or the Diagnostic Scan Tool (DRB III®) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further With this bulletin. If no DTC's are present, and the above symptoms have been experienced, perform the Repair Procedure.
CHANGE TO OXYGEN SENSOR BIASING / SWITCHING AT IDLE WITH NEUTRAL OR PARK SELECTED
Date: 06/18/99
Bulletin # 181599
Model year(s): 1999
Description: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 4.7L ENGINE
AND BUILT AFTER APRIL 20, 1999. THIS BULLETIN WILL APPLY TO EARLIER BUILT VEHICLES THAT HAVE HAD THE SOFTWARE OF THE POWERTRAIN CONTROL MODULE (PCM) REPROGRAMMED TO
99CAL18 OR HIGHER.
Details:
Several revisions have been made to the idle strategy of the 4.7L engine. One change is to the upstream Oxygen Sensor (O2) biasing / switching when the transmission is in Park or Neutral.
A review of warranty has revealed erroneous replacement of upstream 02 sensor(s). This may be caused by misdiagnosis of 02 activity. Technical Service Bulletin (TSB) #18-31-98 was released September 25, 1998 to address the unique upstream 02 biasing /
switching strategy of the WJ 4.7L engine. Basically, the TSB 183198 stated that the 02 sensor will be biased rich when the engine is at idle and the transmission is in Park or Neutral.
If not familiar with the original upstream 02 sensor biasing strategy, the technician may notice very little 02 sensor switching and may erroneously replace the 02 sensor because of 02 sensor inactivity.
With the newly revised idle strategy, the technician will notice more frequent switching (less rich biasing) of the upstream 02 sensors when the engine is at idle and the transmission is in Park or Neutral. Idle quality is not impacted by this revision.
The revised WJ 4.7L idle strategy is implemented in 99Ca118. Using the DRB III® scan tool, the technician can determine the PCM calibration level by viewing the scan tool MODULE DISPLAY screen.
START-UP IMPROVEMENTS TO COMPENSATE FOR SEASONAL CHANGES TO FUEL QUALITY
Date: 06/25/99
Bulletin # 181699
Model year(s): 1999
Description: NOTE: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 4.7L
GASOLINE ENGINE BUILT BEFORE APRIL 22, 1999. Information regarding engine start-up improvements to compensate for seasonal changes to fuel quality. This bulletin involves selectively erasing and reprogramming the JTEC Powertrain Control Module (PCM) with new software (calibration change 99Cal18).
Engine fuel is adjusted seasonally by fuel oil companies. One reason for this adjustment in the fuel mixture is to compensate for seasonal temperature changes. When the current ambient temperature does not correspond with a recent fuel mixture change, driveability issues may occur. Possible driveability conditions that may be encountered are: start and stall, sag or hesitation, or momentary engine misfire.
The new PCM software improves the initial 10 seconds of engine start-up and acceleration at ambient temperatures of 20 to 80°F (-7 or 27°C).
Details: Using the Mopar Diagnostic System (MDS2) and or the Diagnostic Scan Tool (DRB III®) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC's are present, and the above symptoms have been experienced, perform the Repair Procedure.
ENGINE DIE-OUT WHEN FOLLOWING ENGINE START
Date: 06/99
Bulletin # 181799
Model year(s): 1999
Description: NOTE: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 4.7
GASOLINE ENGINE BUILT BEFORE APRIL 22, 1999. An engine die-out when following an engine start, or an engine stall during a parking lot maneuver, may occur when the load on the engine is increased temporarily. The increased engine loading may come from the power steering pump, the air conditioning compressor, the alternator, or when the transmission is engaged.
The new PCM software improves Idle Air Control (IAC) compensation for the different and constantly varying engine loads.
Details: Using the Mopar Diagnostic System (MDS2) and or the Diagnostic Scan Tool (DRB III) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC's are present, and the above symptoms have been experienced, perform the Repair Procedure.
TRANSMISSION FLUID LEVEL INSPECTION PROCEDURE/SERVICE CAUTIONS
Date: 07/23/99
Bulletin # 211199 (supercedes 211398 dated October 16, 1998)
Model year(s): 1999-2000
Description: THIS INFORMATION APPLIES TO VEHICLES EQUIPPED WITH A 45RFE
TRANSMISSION. The 45RFE transmission, newly introduced in the 1999 model year on Grand Cherokee models and for 2000 Dakota and Durango models, has some unique service features compared with its predecessors.
Details:
The following are some items to consider during service:
Fluid Level Inspection:
1. Warm the fluid to at least 21 ° C (70° F.) by operating the vehicle.
2. Measure the transmission fluid temperature using the DRB IIIa.
3. Move the gear selector through drive and reverse. Place the gear selector in Park.
4. Check the fluid level against the fluid level/temperature chart (Figure 1).
NOTE: WHEN COLD (BELOW 10° C (50° F) THE FLUID LEVEL WILL NOT REGISTER ON THE DIPSTICK.
Fluid/Filter Replacement:
Accurate fluid level is difficult to determine cold. Initially add only 5 quarts of fluid during the refill procedure. **This amount will allow the engine to be started and the transmission to be operated in neutral until the transmission temperature has reached at least 21° C (70° F.). Once the fluid temperature is known, the final amount can be added without overfilling the transmission. Additionally, during this procedure, pressure switch and/or loss of prime DTC's may be set. If they are, erase them using the DRB IIIa before returning the vehicle to the customer.
TIE ROD AND DRAG LINK SLEEVE - BOLT TORQUE REVISION
Date: 07/30/99
Bulletin # 021099
Model year(s): 1999
Description: Tie rod and Drag Link sleeve - bolt torque revision.
Details: Effective with vehicles built after May 3, 1999 the steering dampener to tie rod attachment nuts and the tie rod and drag link adjuster sleeve clamp nuts have been changed in production. The new nuts require 41 Nm (30-ft. lbs.) torque. Previous fasteners will have a yellow tag attached which indicate this tightening requirement.
ADJUSTABLE / OFFSET BALL JOINTS
Date: 08/99
Bulletin # 021299
Model year(s): 1999-2000
Description: Front end alignment - adjustable / offset ball joints.
Details: This bulletin involves installing offset ball joints to allow adjustments to camber, which were not previously possible on XJ, TJ and ZJ models and to camber and caster which were not possible on WJ models. This TSB releases new offset ball joints which provide the capability to make front-end alignment adjustments to camber and caster. Camber adjustments and caster adjustments on some models are fixed and built into the front axle. Caster adjustments could be made in the past on TJ, XJ and ZJ models. These parts are only to be used in situations where a slight lead or drift to one side of the road or another is occurring with no driver input or where a customer indicates that constant driver input is required to maintain straight ahead steering. These parts will not effect situations where a lead or drift condition is present only under braking.
LOW SPEED GRINDING NOISE TRANSFER CASE
Date: 08/13/99
Bulletin # 210199A
Model year(s): 1999
Description: THIS BULLETIN APPLIES TO VEHICLES BUILT BEFORE DEC. 1, 1998. A grinding, raspy noise may be present in the transfer case. This noise will be present during a light acceleration or float condition at speeds up to 35 mph. The noise is most noticeable when the vehicle has not been driven for several hours. It typically lessens as the vehicle warms up and is often not present when the vehicle is at operatirfg temperature. The condition is caused by high internal pressure in the lubrication supply pump, which allows the rotors to misalign and produce noise. A revised lubrication pump assembly has been released to correct the condition.
Details: This bulletin involves the replacement of the transfer case lubrication pump assembly and fluid. If the vehicle exhibits the condition described above, perform the Repair Procedure.
Parts required:
05013017AB Lubrication Pump Assembly
05016796AA Fluid, Transfer Case
TEMPERATURE SETTING IN THE AZC CONTROL MODULE
Date: 08/20/99
Bulletin # 241699
Model year(s): 1999
Description: This bulletin involves re-calibrating the AZC Module for more accurate interior temperature settings. Some customers may experience dissatisfaction with the temperature setting in the AZC control module. Customers may feel that they have to go beyond what they feel are normal settings to be comfortable. Some examples of typical customer complaints are as follows:
- Having to set the temperature too high or low to maintain a comfortable
passenger compartment.
- Constantly having to adjust the temperature setting when in automatic mode
- Temperature fluctuation in the automatic mode
- Temperature overshoot in automatic
Details: If customers indicate that their vehicle exhibits these conditions, perform the Repair Procedure.
45RFE TRANSMISSION SHIFT QUALITY IMPROVEMENTS
Date: 09/03/99
Bulletin # 211299
Model year(s): 1999-2000
Description: (superceded by 210900 dated 09/15/00)
DRIVE LEARN PROCEDURES FOR 45RFE TRANSMISSIONS
Date: 09/03/99
Bulletin # 211399
Model year(s): 1999-2000
Description: 45RFE drive learn procedures for 45RFE transmissions.
Details: The 45RFE transmission adapts to its mechanical tolerances by learning the clutch volume indexes (CVI's) as well as the duty cycle and other parameters that control shift quality. Performing a Quick Learn will simply reset all transmission adaptive values to factory preset values and it will exercise the transmission clutches to learn an approximate value for the clutch CVI's.
Quick Learn should not be used as a remedy for shift quality complaints. Quick Learn
resets more than 70 learn parameters to their preset values and will require-them to be relearned.
Quick Learn should only be used when a transmission has be replaced or overhauled, or when the Transmission Control Module has been replaced or flashed. Once Quick Learn
is performed, an initial drive evaluation should be performed to determine if the
transmission is shifting smoothly.
VERIFY THAT ALL APPLICABLE TECHNICAL SERVICE BULLETINS FOR SHIFT QUALITY HAVE BEEN PERFORMED PRIOR TO PERFORMING THE DRIVE LEARN PROCEDURE.
BRAKE ROUGHNESS OR PEDAL PULSATION
Date: 09/10/99
Bulletin # 050299A
Model year(s): 1999
Description: Superceded by 0500302B dated 05/13/02. Brake roughness or pedal pulsation when the brakes are applied.
45RFE TRANSMISSION SHIFT QUALITY ISSUES
Date: 09/15/00
Bulletin # 210900 (supercedes 211299 dated 09/99)
Model year(s): 1999-2000
Description: Superceded by 1802501 dated 10/15/01
AXLE DIAGNOSIS
Date: 09/24/99
Bulletin # 030599
Model year(s): 1999-2000
Description: Diagnosis of the vehicle axle
Details: A sound may appear to be coming from the general area of the vehicle axle(s). The sound may be described as a growl, howl, or a whine. They may occur at different vehicle or engine speeds. They may also occur during different axle loading conditions i.e light driving, heavy driving, float, cruise or coast.
A correct and thorough diagnosis of the axle condition is perhaps the most important tool that the technician has in effecting a successful axle service. Because the transmission of an axle-like sound may be due to vehicle components other than the axle, a good diagnostic procedure is necessary in determining if the condition can be corrected by service to the internal axle components. Proper diagnosis may lead the technician to vehicle components other than the axle.
FUEL SYSTEM PRESSURE DIAGNOSTIC PROCEDURES
Date: 10/08/99
Bulletin # 140599
Model year(s): 1999-2000
Description: Fuel system pressure diagnostic procedures that may be used to determine the cause of a loss of fuel system pressure.
Details: A loss of pressure in the fuel system may occur at any rate depending upon the cause of the fuel leakage. Because the rate of fuel pressure loss may vary between vehicles, the symptoms of this condition may be different from one vehicle to another.
The condition may be more noticeable when the vehicle engine is started. Low or no fuel pressure may cause, a long crank time, a start and stall, an initial sag or hesitation, and other engine performance conditions. The condition may vary depending upon engine temperature and/or ambient temperature.
(EVIC) TEMPERATURE SENSOR DISPLAY
Date: 09/24/99
Bulletin # 081299A
Model year(s): 1999
Description: Conditions with the Electronic Vehicle Information Center (EVIC) temperature sensor display (incorrect value). This bulletin involves flash reprogramming the Body Control Module (BCM).
Details: The outside temperature reading displayed in the overhead console can, in certain low speed driving situations, display an incorrect value. The system was originally programmed to delay the temperature update in the module, if you were, for example, stuck in traffic. This was done to avoid the effect of road temperatures or engine compartment heat from influencing the temperature reading. One example of a situation that can occur is when a vehicle is parked in a garage in cold temperatures. The garage could be 20 degrees warmer than the outside air temperature. If the vehicle was started and did not reach speeds over 25 MPH, the display will update at start up and may not update again until the vehicle reached speeds over 25 MPH. This would cause a 20-degree discrepancy on the display. New programming has been implemented in the Body Control Module (BCM) to reduce the likelihood of this occurrence.
CHILD SEAT TETHER ANCHORS
Date: 10/99
Bulletin # 233599A
Model year(s): 1999-2000
Description: Child seat tether anchors.
Details: User-ready child restraint tether strap anchors will be provided in passenger cars in the 2000 Model Year, and in light trucks in the 2001 Model Year. Tether straps improve the performance of child restraints in collisions. Because of the publicity that has accompanied the "Fit for a Kid" Program, owners of earlier products are expected to approach dealers for the free provision and installation of the anchor hardware. DaimlerChrysler Corporation is offering child seat tether anchors for this vehicle. Each tether anchor is packaged in a kit containing all necessary parts and a detailed instruction sheet.
Parts required:
05016869AA (Camel)
05016869AA (Taupe)
ROOF JOINT MOLDING DISTORTION
Date: 10/01/99
Bulletin # 233899
Model year(s): 1999
Description: This bulletin involves replacing the roof Joint molding and front roof rack.
Details: The roof joint molding may distort and protrude above the roof. Inspect the roof joint molding. If distortion is present, perform the Repair.
Parts required:
55136526AC Molding - Roof Joint
55136952AB Support - Roof Rack Front Right
55136953AB Support - Roof Rack
NEW WJ 186FBI FRONT AXLE PINION GEAR FLANGED NUT
Date: 11/26/99
Bulletin # 030899
Model year(s): 1999-2000
Description: Information on new WJ 186FBI front axle pinion gear flanged nut and ground collapsible spacer. These improvements entered vehicle production approximately October 30, 1999.
Details: Quality improvements have been made to two components in the WJ 186FBI (Dana model 30) front axle. These revised axle components include:
1.) A flanged pinion gear nut to replace the old pinion nut and washer combination
2.) A collapsible pinion spacer with both ends ground smooth and parallel to each other.
Parts required:
04864845AB Spacer, pinion gear collapsible
05017755AA Nut, pinion gear flanged (186FBI/Dana model 30)
AIRBAG ON / OFF SWITCHES
Date: 11/99
Bulletin # 0803799
Model year(s): 1999-2001
Description: Superceded by 0802501 dated 11/23/01
WATER LEAK AT THE REAR OF THE SUNROOF
Date: 11/05/99
Bulletin # 234499
Model year(s): 1999-2000
Description: This bulletin involves installing a revised sun roof drain channel containing a secondary seal. A water leak may be present at the rear of the sunroof when the vehicle is in an automatic car wash containing very high-pressure water jets. Water can push past the primary seal and enter the drain channel. Under certain circumstances, the water may splash or mist into the passenger compartment. An improved drain channel has been developed which contains a secondary seal.
Details: If customers complain of this condition and no other sunroof problems are evident, perform the Repair Procedure.
Parts required:
05012769AA Drain Channel
HEATER A/C SYSTEM CHANGING TO DEFROST MODE WHEN ACCELERATING
Date: 11/12/99
Bulletin # 242499
Model year(s): 1999-2000
Description: Concerns with the heater A/C system changing to defrost mode when accelerating.
Details: The vacuum supply to the Heater A/C system may drop when accelerating or when speed control engages. This may cause the mode vacuum motor to switch to the defrost position. If no vacuum leaks are found, an additional vacuum check valve may have to be installed in the heater A/C line.
Parts required:
04677204 Check valve
Vacuum hose
ENGINE MISFIRE PCM ERROR USING DRBIII®
Date: 11/15/99
Bulletin # 182599
Model year(s): 1999
Description: A Powertrain Control Module (PCM) software condition exists that can cause an erroneous engine miss to occur only when in certain screens of the Diagnostic Scan Tool (DRB III®). The miss will not set a Malfunction Indicator Lamp (MIL), but may be felt and can be seen while performing diagnostics with the DRB III®. This condition occurs only when using the DRB III" to read Diagnostic Trouble Codes (DTC's), Secondary Indicators, or 1 Trip Failures and while driving the vehicle. This is more likely to occur during hard acceleration. While in these screens, a miss may be felt by the technician, or when in the Secondary Indicators or 1 Trip Failures screen an erroneous injector circuit failure can flash on the DRB III" screen with an accompany beep from the DRB III ®. This condition may lead technicians to incorrectly diagnose a problem and may cause erroneous repairs that will not fix the vehicle.
Details: Using the Mopar Diagnostic System (MDS2) and or the DRB III® with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If DTC's are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC's are present, and the above symptoms have been experienced, perform the Repair Procedure.
COLD AIR LEAKING INTO PASSENGER COMPARTMENT FOOT WELL
Date: 11/12/99
Bulletin # 242599
Model year(s): 1999-2000
Description: Information on cold air leaking into passenger compartment foot well (plenum seal).
Details: This bulletin involves repositioning the heater housing to cowl plenum seal.
Parts required:
04318028 Foam tape
05012709AA Seal
NV-242 AND NV-242HD SECTOR SHAFT SEAL OIL SEEPAGE
Date: 12/03/99
Bulletin # 212299
Model year(s): 1999
Description: NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH THE NV-242 OR THE NV-242ND TRANSFER CASE AND ANY GRAND CHEROKEE BUILT BEFORE MARCH 20, 1999. The customer may complain of an oil seepage from under the vehicle. The oil seepage
may be localized to the area of the transfer case. The oil will normally be red in color.
Details: This bulletin involves the installation of a revised sector shaft, sector shaft seal, and repositioning the current sector shaft bearing on the NV-242 and NV-242ND transfer case. Determine if the oil seepage is coming from the transfer case sector shaft seal. If the oil seepage is not from the transfer case sector shaft seal, then additional diagnosis is required. If the oil seepage is from the transfer case sector shaft seal, then perform the Repair Procedure.
Parts required:
05014047AA Sector Shaft, Transfer Case
05014046AA Sector Shaft Seal
01664355 Roll Pin, Low Range Fork
05010124AA ATF+3, Transfer Case Lubricant (quart)
05013477AA Mopar RTV for Gear Lube (Red)
REDUCTION OF FRONT DRIVELINE NOISE, VIBRATION, OR HARSHNESS
Date: 12/31/99
Bulletin # 021199A
Model year(s): 1999
Description: Installation of a front track bar damper and both front upper control arms to reduce front driveline noise, vibration, or harshness (NVH). While driving the vehicle operator may identify front driveline noise, vibration or harshness which is being transmitted into the passenger compartment. The front driveline condition may occur at different vehicle speeds and during different driving modes (i.e. during coast, float, drive or cruise).
Details: The track bar repair applies to vehicles built prior to September 25, 1998. The upper control arm repair applies to vehicles built prior to January 12, 1999.
Parts required:
05017512AA Package, front track bar damper
52088208C Arm, upper control (2)
CONDENSATION ON EXTERIOR OF HEATER HOUSING
Date: 12/17/99
Bulletin # 240699A
Model year(s): 1999-2000
Description: Condensation may form on the exterior of the heater A/C housing and drip on the floor.
Details: This bulletin involves installing a foam insulator to the heater A/C housing.
Parts required:
05015245AA Self adhesive foam
MISDIAGNOSED LEAK DETECTION PUMP SYSTEMS
Date: 02/04/00
Bulletin # 180100
Model year(s): 1999-2000
Description: Misdiagnosed Leak Detection Pump systems with diagnostic trouble codes P1494, P0442 P0455, or P0456.
Details: During evaporative system diagnosis, Leak Detection Pumps have mistakenly been replaced. A thorough inspection for pinched, kinked, or disconnected supply vacuum lines (as currently listed in the Powertrain Diagnostic Procedures) is a critical step in diagnosing DTC P1494 (LDP SW OR MECHANICAL FAULT). Additionally, the other evaporative leak faults (DTC P0442 - SMALL LEAK, P0455 - LARGE LEAK, and P0456 - VERY SMALL LEAK) should have the supply vacuum lines examined for pinches or kinks prior to any LDP component replacement. The supply vacuum lines should be checked from the engine compartment all the way to the fuel tank, including the LDP and purge system.
INTERMITTENT HARSH ENGAGEMENT INTO REVERSE GEAR
Date: 02/04/00
Bulletin # 210100
Model year(s): 1999-2000
Description: Intermittent harsh engagement into reverse gear on certain RE model transmissions. The customer may experience a harsh engagement into gear when reverse is selected. This condition may be intermittent, and may occur more frequently as the transmission fluid warms to normal operating temperatures.
Details: THIS INFORMATION APPLIES TO 1999 AND 2000 MODEL YEAR VEHICLES
EQUIPPED WITH EITHER A 42RE AUTOMATIC TRANSMISSION BUILT BEFORE SEPTEMBER 1, 1999 OR 2000 MODEL YEAR VEHICLES EQUIPPED WITH A 46RE AUTOMATIC TRANSMISSION BUILT BEFORE DECEMBER 1, 1999. Verify that the transmission fluid level is correct and that the valve body throttle valve and transmission shift linkage is adjusted properly. Using the Mopar Diagnostic System (MDS2) and or the Diagnostic Scan Tool (DRB III) with the appropriate Diagnostic Procedures Manual, verify all engine/transmission systems are functioning as designed. If Diagnostic Trouble Codes (DTC’s) are present, record them on the repair order and repair as necessary before proceeding further with this bulletin. If no DTC’s are present, and the above symptoms have been experienced, perform the Repair Procedure.This bulletin involves the replacement of the transmission valve body upper housing separator plate and a valve body check ball. In addition, for 2000 M.Y. vehicles equipped with a 46RE transmission this bulletin involves selectively erasing and reprogramming the JTEC Powertrain Control Module (PCM) with new software (calibration change 00Cal13/13A).
COLD DRIVER'S FEET OR INADEQUATE AIRFLOW
Date: 02/04/00
Bulletin # 240100
Model year(s): 1999-2000
Description: Customers may complain of cold driver's feet or inadequate airflow to the driver's side floor.
Details: THIS BULLETIN APPLIES TO VEHICLE BUILT BEFORE SEPTEMBER 1, 1999. VEHICLES BUILT AFTER THAT DATE CONTAIN THE REVISED FLOOR DUCT.
1. Locate the driver's side floor duct and attaching screw
2. Remove the attaching screw and duct. This requires a very short #1 Phillips screw
driver, approx. 1 1/2 inches in length.
3. Install the new duct and install the attaching screw.
Parts required:
05012723AB Duct - Driver's side floor
POWER DOOR LOCKS, WINDOWS, KEYLESS ENTRY, MIRRORS - INTERMITTENT OPERATION
Date: 02/11/00
Model year(s): 1999
Bulletin # 080300
Description: Power Door Locks, windows, keyless entry, pwr mirrors - intermittent operation.
Details: This bulletin involves Flash Re-programming the Body Control Module and resetting the Remote Keyless Entry Module. This can be the result of a communication error in the Door Switch Module located in the passengers' door. Revised programming in the Body Control Module has been developed to address this issue.
REAR AXLE WHINE 40 MPH+
Date: 03/03/00
Bulletin # 030300
Model year(s): 1999-2000
Description: Concerns with a whine-like sound heard coming from the rear axle of the vehicle at speeds greater than 40 MPH. The sound may be more noticeable once the vehicle
powertrain components have reached normal operating temperatures.
Details: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 4.7L ENGINE BUILT BEFORE NOVEMBER 16, 1999. THIS REPAIR, BY ITSELF, WILL NOT CORRECT SIGNIFICANT REAR AXLE GENERATED SOUND. IN THOSE INCIDENCES, THIS REPAIR MAY BE MOST BENEFICIAL WHEN PERFORMED WITH AN AXLE REBUILD REPAIR.
Parts required:
52099487AC Rear propeller shaft (4.7L with a NV-247 transfer case)
52111490AB Rear propeller shaft (4.7L with a NV-242HD transfer case)
52099486AC Rear propeller shaft (4.7L with no transfer case - 4x2)
BRAKE ROUGHNESS OR PEDAL PULSATION
Date: 03/00
Bulletin # 050100
Model year(s): 1999-2000
Description: Superceded by 0500302B dated 05/13/02.
WINDOW REGULATOR - STICKING AT TOP OF TRAVEL
Date: 03/03/00
Bulletin # 231000 (supercedes 233799)
Model year(s): 1999-2000
Description: Window Regulator - sticking at top of travel.
Details: This bulletin involves enlarging the window regulator attaching holes in the door panel and replacing the window regulator.
Parts required:
55076466AD Regulator right
55076467AD Regulator left
RED-IN-COLOR OIL SEEPAGE FROM UNDER THE VEHICLE
Date: 03/10/00
Bulletin # 210300
Model year(s): 1999
Description: Complaints of a red-in-color oil seepage from under the vehicle. The oil seepage may be localized to the sector shaft seal of the transfer case.
Details: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH THE NV-242 OR THE NV-242HD TRANSFER CASE AND ANY GRAND CHEROKEE BUILT BEFORE MARCH 20, 1999. If the oil seepage is not from the transfer case sector shaft seal, then additional diagnosis is required. If the oil seepage is from the transfer case sector shaft seal, then perform the Repair Procedure.
KEYLESS ENTRY TRANSMITTER - INTERMITTENT OPERATION
Date: 03/17/00
Bulletin # 080800 (supercedes 081699 June 11, 1999)
Model year(s): 1999-2000
Description: Keyless Entry Transmitter - intermittent operation.
Details: This condition may be intermittent and will have similar
symptoms to a dead transmitter battery. This can be caused by a lost or intermittent contact between the battery terminal and the printed circuit board. Solution is to replace the transmitter.
Parts required:
56036859AD Transmitter - XJ/WJ (Use with 56036859,
56036859AB or 56036859AC)
56036860AD Transmitter - WJ (Use with 56036860,
56036860AB or 56036860AC)
INOPERATIVE CARGO COVER
Date: 05/05/00
Bulletin # 231700
Model year(s): 1999-2000
Description: Cargo Cover Shade Bracket Breaks.
Details: The cargo cover shade bracket may break, rendering the cover inoperable. A repair kit has been developed to eliminate the need to replace the cover assembly.
Parts required:
05017679AA Cargo Cover Repair Kit - Agate (AZ trim)
05017680AA Cargo Cover Repair Kit - Camel (K5 trim)
05017681AA Cargo Cover Repair Kit - Taupe (L5 trim)
INTERMITTENT BUMP (STOP-BUMP)
Date: 06/23/00
Bulletin # 030400 (supercedes 030799 dated 10/29/99)
Model year(s): 1999-2000
Description: A condition may exist where the vehicles owner may feel an intermittent bump (stop-bump) once the vehicle is brought to a full stop. The repair technician may erroneously diagnose this condition as a delayed transmission down shift into first gear. This condition may occur 3 to 20 seconds following the stop or when the load on the rear driveline is reduced (e.g., when the applied brake pressure is decreased). The stop-bump condition may be the result of a binding between the splined surfaces of
the rear propeller shaft slip yoke and the rear output shaft of either the transfer case or the transmission. As load on the driveline is reduced, the bound slip yoke will release
suddenly causing a bump-like sensation. The condition may be intermittent. If the above
condition has been experienced, then perform the Repair Procedure. The splined surfaces on the slip yoke section of the new propeller shaft are nickel coated to reduce the opportunity of binding.
Details: THIS BULLETIN APPLIES TO VEHICLES BUILT BEFORE SEPTEMBER 20,1999. A WJ EQUIPPED WITH A 4.0L ENGINE, A NV242 TRANSFER CASE, AND A 198 RBI (M35) REAR AXLE USES A DIFFERENT STYLE REAR PROPELLER SHAFT THAN THOSE WHICH ARE ADDRESSED IN THIS TECHNICAL SERVICE BULLETIN. FOR THIS VEHICLE, THE SPLINED SURFACES ON THE PROPELLER SHAFT SLIP YOKE AND THE TRANSFER CASE OUTPUT SHAFT ARE GREASED TO PREVENT A BINDING CONDITION AND DO NOT REQUIRE REPLACEMENT.
Parts required:
52099484AD Shaft, Drive (4.0L / 4x2 / 42RE / 198 RBI – M35)
52099485AE Shaft, Drive (4.0L / 4x4 / 42RE / NV247 / 198 RBI – M35)
52099486AC Shaft, Drive (4.7L / 4x2 / 45RFE / 226 RBA – M44)
52099487AC Shaft, Drive (4.7L / 4x4 / 45RFE / NV247 / 226 RBA –M44)
52111483AB Shaft, Drive (4.0L / 4x4 / 42RE / NV247 / 226 RBA – M44)
52111490AB Shaft, Drive (4.7L / 4x4 / 45RFE / NV242HD / 226 RBA – M44)
QUALITY IMPROVEMENTS TO ADDRESS FRONT AXLE WHINE AND 2,400 RPM MOAN
Date: 07/21/00
Bulletin # 030500
Model year(s): 1999-2000 (vehicles with V8 only)
Description: This bulletin involves the replacement of the front propshaft, axle yoke, and transfer case yoke. This bulletin also involves selectively erasing and reprogramming the Transmission Control Module or TCM (with calibration 99Ver9.0 or 00Ver9.0), and if necessary, reprogramming the Powertrain Control Module or PCM (with calibration 99Cal19A or 00Cal16A).
Details: The customer may experience powertrain related sound(s) which may be described as front axle whine or as 2,200 to 2,400 engine rpm moan. One or both sounds may be noticed at the same time or separately during different modes of driving.
The front axle whine-like sound may occur during any vehicle speed and during acceleration, coast, or float driving modes. The moan-like sound will normally occur when the transmission is in top gear (overdrive) and the engine is running between speeds of 2,200 to 2,400 rpm. The moan-like sound will normally fade in and out (beat) while the throttle is held in a steady state or when the throttle is being depressed to accelerate the vehicle. The beat may increase in frequency as the engine speed increases. The moan-like sound will not occur if the transmission is shifted to a lower gear (overdrive button depressed) or if the throttle is released. A revised front propeller shaft addresses the whine-like sound from the front axle area. The revision to the TCM software adds a final gear ratio to the transmission. This new final gear ratio will cause a substantial reduction in the moan-like sound. Any remaining sound will occur at higher vehicle speeds.
Parts required:
1x 05019624AA Yoke, front axle pinion (FBI 186 / Mdl 30)
1x 05017755AA Nut, pinion gear
2x J3240553 Strap, front pinion yoke to single cardan universal joint
4x J4006928 Bolt, front pinion yoke strap
1x 05019514AA Yoke, transfer case front (NV-247 or NV-242HD transfer case)
4x 06034966 Bolt, transfer case yoke to double cardan universal joint
1x 05019616AA Propshaft, front (4.7L w/NV-247 or NV-242HD transfer case)
2x 04669020 Label, Authorized Software Update
1x 04275086 Label, Authorized Modification
SEAT BELTS - SLOW TO RETRACT
Date: 08/04/00
Bulletin # 233000
Model year(s): 1999-2000
Description: Seat belts, slow to retract.
Details: This bulletin involves installing a shield to cover the B pillar wire harness and isolate it from the seat belt webbing.
Parts required:
55116545AB Shield
CD PLAYER - CD COMPATIBILITY
Date: 03/24/00
Bulletin # 081100
Model year(s): 1999-2000
Description: CD player - CD compatibility.
Details: Some recordable Compact Disc media, such as CD-R and CD-RW, may not comply with the standard CD format used in automotive CD players. When these CD's are used, customers may encounter error messages, skipping, or delaminating of the labels, which can cause an eject failure. It is important to question whether these kinds of CD media are being used. When customers encounter these symptoms, check the system with a known playable CD. Explain that the media may not be compatible with some automotive CD players. Replacing or exchanging the CD player will not address these issues.
NON-DEPLOYED AIRBAG HANDLING PROCEDURES
Date: 09/29/00
Bulletin # 082700
Model year(s): 1999-2001
Description: Non-deployed airbag handling procedures.
Details: All damaged or faulty and non-deployed driver, passenger, or side airbag(s) or partially deployed 2001 JA and RS front airbags fall into one of two categories:
Non-Warranty Replacement: Dispose in a manner consistent with state, provincial, local
and federal regulations.
Warranty Replacement: If the airbag is requested fro warranty return, the DIAL system
will print a return document. Please return following the instructions in the current Mopar Hazardous Material Awareness Manual. If warranty material return is not required, dispose of in a manner consistent with state, provincial, local and federal regulations.
SPEEDOMETER OR TACHOMETER INOPERATIVE
Date: 09/29/00
Bulletin # 082800
Model year(s): 1999-2000
Description: A condition may exist where the speedometer or tachometer may be inoperative due to gauge needle being wrapped around the wrong side of the stop peg.
Details: This can happen in situations where low battery voltage is present such as jump starting a dead battery. The instrument cluster can cut out if voltage drops below 9.5 volts, causing the needle to drop on the wrong side of the gauge.
1. With the ignition switch in the off position, depress and hold the odometer-reset button.
2. Turn the ignition switch to the run position, continue holding the odometer reset button until the cluster needles start to move, then release the reset-button. (Do not allow the ignition switch to enter the start position) The gauge needles will sweep in both directions and come to rest in the correct position relative to the stop peg.
ACCUMULATION OF FOAMY OIL EMULSION 4.7L ENGINE OIL FILL HOUSING
Date: 09/11/00
Bulletin # 090100A (supercedes 090100 dated 02/00)
Model year(s): 1999-2000
Description:A customer may complain of an oil emulsion accumulation inside the engine oil fill housing. The oil emulsion will normally be foamy and be gray or light brown in color. The emulsion accumulation will often occur on cooler engine surfaces, like the inside of the oil fill housing. Modern engine oils are designed to address the oil emulsion phenomenon. Oil emulsion accumulation is normal and will not damage the engine
A new baffle and a revised oil fill housing cap have been released. The baffle and oil cap
will help to reduce the amount of oil emulsion accumulation within the oil fill housing.
Details: If the customer has experienced this issue, then perform the Repair Procedure.
Parts required:
53032126AA Baffle, Oil Fill Housing
53032389AC Cap, Oil Fill Housing
LONGER THAN NORMAL ENGINE CRANKING TIME
Date: 09/15/00
Bulletin # 140600A
Model year(s): 1999-2001
Description: Superceded by 1400201 dated 03/16/01
STEERING GEAR HONK ON TURNS
Date: 09/15/00
Bulletin # 190600
Description: Steering gear honk on turns. A honking sound may be heard when making slow speed sharp turn such as turning into a driveway. The sound will normally happen when making right turns with left hand drive vehicle and when making left turns with right hand drive vehicles.
Details: Using the procedures outlined in the Service Manual, remove the steering gear and replace it.
Parts required:
52088272AD Steering Gear
SEAT BELT TURNING LOOP COVER REPAIR
Date: 10/13/00
Bulletin # 2303800
Model year(s): 1999-2000
Description: Seat belt turning loop cover repair.
Details: This bulletin involves repairing the seat belt turning loop cover instead of replacing the seat belt assembly when the cover hinge has broken. The cover on the seat belt turning loop may break at the plastic hinge. A Repair Procedure has been developed to replace the cover rather that replacing the seat belt assembly.
Parts required:
5HK91LAZaa Cover - Agate
5HK91RK5aa Cover - Camel
5HK91WL5aa Cover - Taupe
5HK91XT5aa Cover - Sandstone
CHILD SEAT TETHER ANCHORS
Date: 11/00
Bulletin # 230800B (supercedes 230800A dated 07/00)
Model year(s): 1999-2000
Description: Child seat tether anchors.
Details: User-ready child restraint tether strap anchors will be provided in passenger cars in the 2000 Model Year, and in light trucks in the 2001 Model Year. Tether straps improve the performance of child restraints in collisions. Because of the publicity that has accompanied the "Fit for a Kid" Program, owners of earlier products are expected to approach dealers for the free provision and installation of the anchor hardware. DaimlerChrysler Corporation is offering child seat tether anchors for this vehicle. Each tether anchor is packaged in a kit containing all necessary parts and a detailed instruction sheet.
Parts required:
05016869AA (Camel)
05016869AA (Taupe)
ENGINE PERFORMANCE ENHANCEMENTS 4.7L
Date: 12/21/00
Bulletin # 1802300A (supercedes 1802300 dated 12/01/00)
Model year(s): 1999-2000
Description: Superceded by 1800101 dated 01/26/01
WIRE SPLICE REPAIRS
Date: 12/00
Bulletin # 080600REV
Model year(s): 1999-2002
Description: Wire splice repairs.
Details: This bulletin provides a revised wire splice procedure and related parts. This is the only procedure approved by DaimlerChrysler Engineering. This procedure must be used anytime a wire splice repair is required.
ENGINE PERFORMANCE ENHANCEMENTS 4.7L
Date: 01/26/01
Bulletin # 1800101 (supercedes 1802300A)
Model year(s): 1999-2000
Description: Information regarding 4.7lL engine performance enhancements. Some vehicle engines may exhibit several of the following engine performance conditions:
1. Part throttle or wide open throttle spark knock.
2. Sag or hesitation following a cold engine start (except WJ with Calif. emissions).**
3. Rough idle.
4. Idle sag when decelerating to a stop.
Details: This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software (calibration level 99Cal20 and 00Cal17).
LONGER THAN NORMAL ENGINE CRANK TIME PRIOR TO ENGINE START
Date: 03/16/01
Bulletin # 1400201 (supercedes 140600 dated 09/15/00)
Model year(s): 1999-2001
Description: This bulletin involves the repair of the fuel pump module. The customer may experience a longer than normal engine cranking time prior to engine start. This condition may be caused by fuel pressure loss due to a worn sealing ring within the fuel
module.
NOTE: QUALITY ANALYSIS HAS REVEALED THAT A WORN SEALING RING IS THE PRIMARY REASON WHY THE FUEL MODULE IS REPLACED FOR FUEL PRESSURE LEAK DOWN. IT IS RECOMMENDED THAT THE SEALING RING BE REPLACED BEFORE A FUEL MODULE ASSEMBLY REPLACEMENT IS ATTEMPTED.
Details:1. Start and run the engine. Verify normal fuel system pressure of 339 kPa +/- 34 kPa (49.2 psi +/- 5 psi).
2. Stop the engine. Verify that the fuel system pressure does not fall below 207 kPa (30
psi) in less than five (5) minutes.
3. If the fuel pressure does not fall below 207 kPa (30 psi) in less than five (5) minutes,then the long crank time may not be due to the fuel system. Further diagnosis must be
made to the entire engine system.
4. If fuel pressure does fall below 207 kPa (30 psi) in less than five (5) minutes, then refer to TSB 14-05-99 for additional fuel system diagnostic assistance.
5. If diagnosis determines that the cause of the fuel system pressure loss is due to the fuel pump module, then inspect the fuel pump module part number label for its assembly
build date code (Julian date). The part number label is affixed to the fuel pump module
wire harness (pigtail), near the electrical connector to the body wire harness.
6. Inspect the bottom row of numbers on the fuel module label and locate the module build
date code. Determine the date of build (Julian date) for the fuel module assembly. The
first two numbers in the date code indicate the calendar year (1998 = 98, 1999 = 99,
2000 = 00, 2001 = 01), and the remaining three numbers in the code (1 to 365)
represent the day of the calendar year (Figure 1).
7. If the module part label indicates that the fuel module assembly was built on or before
November 04, 1999 (Julian date of 99308), then a spacer must be used with the sealing
ring. The split washer in the repair kit is used as the sealing ring spacer.
NOTE: FAILURE TO USE THE SPLIT WASHER, AS A SPACER FOR THE SEALING RING (WHEN REQUIRED), MAY CAUSE EXCESSIVE MOVEMENT AND DAMAGE TO THE SEALING RING.
8. If the module part label indicates that the fuel module assembly was built after
November 04, 1999 (Julian date of 99308), then a spacer must NOT be used with the sealing ring. The split washer in the repair kit can be discarded.
NOTE: SOME REPLACEMENT FUEL PUMP MODULES, BUILT AFTER NOVEMBER 04, 1999 (DATE CODE 99308), HAVE BEEN USED TO REPLACE FUEL MODULES BUILT PRIOR TO NOV. 04, 1999. IT IS IMPORTANT THAT PRIOR TO EACH REPAIR THE MODULE DATE CODE BE PROPERLY DETERMINED.
Parts required:
05019308AA Kit, Fuel Pump Module Repair
USING SUPPLEMENTAL OIL ADDITIVE TREATMENTS
Date: 05/04/01
Bulletin # 0900301
Model Year(s): 1999-2003
Description: NOTE: THIS BULLETIN APPLIES TO ALL DAIMLERCHRYSLER MODELS/ENGINES
BUILT BEFORE AND AFTER THE 2001 MODEL YEAR. This bulletin reinforces a requirement to cease the current practice of using supplemental oil additive treatments in all DaimlerChrysler engines.
Details: Engine oil additives/supplements (EOS) should not be used to enhance engine oil performance. Engine oil additives/supplements should not be used to extend engine oil change intervals. No additive is known to be safe for engine durability and can degrade emission components.
Additives can contain undesirable materials that harm the long term durability of engines by:
1. Doubling the level of Phosphorus in the engine oil. The ILSAC (International Lubricant
Standard Approval Committee) GF-2 and GF-3 standards require that engine oil contain no
more than 0.10% Phosphorus to protect the vehicles emissions performance. Addition of engine oil additives/supplements can poison, from the added sulfur and phosphorus, catalysts and hinder efforts to guarantee our emissions performance to 80,000 miles and newrequirements of 150,000 miles.
2. Altering the viscosity characteristics of the engine oil so that it no longer meets the requirements of the specified viscosity grade.
3. Creating potential for an undesirable additive compatibility interaction in the engine
crankcase. Generally it is not desirable to mix additive packages from different suppliers in the crankcase; there have been reports of low temperature engine failures caused by additive package incompatibility with such mixtures.
COOLER OR WARMER THAN DESIRED AIR TEMPERATURES
Date: 05/18/01
Bulletin # 2400701
Model year(s): 1999-2001
Description: A customer may experience colder or warmer than desired air temperatures coming from the vehicle HVAC system vents. This change in air temperature may occur gradually over time and only on vehicles equipped with the Automatic Zone Control (AZC) HVAC system. The air from the driver side HVAC vents will tend to increase in temperature, with this condition being more noticable when outside ambient air temperatures are in the 16°C to 27°C (60°F to 80°F) range. The air from the front passenger HVAC vents will tend to decrease in temperature, with this condition being more noticeable when ambient temperatures are in the -7°C to 4°C (20°F to 40°F) range.
Details: This bulletin involves the replacement of the Automatic Zone Control assembly. Since the condition occurs gradually over time, the technician may not be able to readily verify the condition. If the HVAC system appears to be operating correctly and the customer complains of the above condition, then perform the Repair Procedure.
Parts required:
55115903AE Assembly, Automatic Temperature Control
TROUBLE CODES CAUSED BY AN EVAPORATIVE SYSTEM LEAK
Date: 05/11/01
Bulletin # 2500401
Model year(s): 1999-2001
Description: Additional diagnostic for diagnostic trouble codes caused by an Evaporative System leak. This bulletin involves information which may be of assistance when diagnosing the vehicle evaporative system for a possible leak source and its cause.
Details: DTC P0442, P0455 or P0456 are all diagnostic codes indicating a leak has been detected in the EVAP system. The bulletin points out that, while most leaks will be external such as a loose gas cap or damaged hose, internal leaks also are possible. The most likely source of an internal leak is the Duty Cycle Purge valve (DCP). This valve could be stuck open due to corrosion, dirt from outside or debris from inside the system, such as charcoal from the vapor canister. The DCP valve is tested by on-board diagnostics only after the Purge Flow Monitor is passed; if that monitor fails, the DCP valve will not be tested. The bulletin offers helpful tips for troubleshooting and understanding the logic of the EVAP diagnostic routine
AIRBAG / CLOCK SPRING SERVICE
Date: 05/25/01
Bulletin # 0801001
Model year(s): 1999-2002
Description: Air bag / clock spring service for various models including 1999-2002 Grand Cherokee.
Details: When servicing any airbag system, it is essential to follow the proper Service Manual and/or Diagnostic Manual procedures for diagnosing, testing, and replacement of any component. When diagnosing any airbag squib circuit Diagnostic Trouble Code (DTC) with a DRBIII, the use of the Airbag Load Tool (special tool 8310 and 8443) is required. The Airbag Load Tool, used in conjunction with the DRBIII are used to isolate and test components and wiring for failure. Only replace the component or wiring that has failed. This will reduce unnecessary cost to the customer.
NOTE: Airbag replacement is not required every time it is removed or when another component has failed. Use of the DRBIII and Airbag Load Tool will determine if the airbag has failed and replacement is needed.
Recent analysis of returned clock springs have indicated that prior service may have contributed to the clock spring's failure. Do not use silicone or other lubricants on or near the clock spring. Lubricants are often used in the clock spring area of the steering column to eliminate noise. Lubricants may have an adverse effect on the clock spring.
Clock spring centering - Any repair that may disrupt the positioning of the steering wheel with the front wheels will require that the clock spring be centered. This includes clock spring replacement, steering column service, HVAC service, steering gear service, and front suspension crossmember service. Refer to the appropriate Service Manual for the clock spring centering procedure.
AUTOMATIC TRANSMISSION FLUID USAGE ATF+4®
Date: 06/29/01
Bulletin # 2100601 (supercedes 211699 10/22/99)
Model year(s): 1999-2002
Description: Information pertaining to automatic transmission fluid usage ATF+4®.
Details:1999-2002 Grand Cherokee. A new transmission fluid (ATF+4® Type 9602) has been developed and is being used as factory fill for all vehicles with Chrysler automatic transmissions. Until now, vehicles originally filled with ATF+2 or ATF+3 were to be serviced with ATF+3. Effective immediately, it is recommended that all vehicles with Chrysler automatic transmissions (except for 1999 and earlier minivans) be serviced with ATF+4®.
NOTE: ATF+4® MUST always be used in vehicles that were originally filled with ATF+4®. ATF+4® is compatible with ATF+3 and can be used to top off vehicles that currently have ATF+2 or ATF+3. DO NOT use ATF+2 or ATF+3 to top off vehicles that have ATF+4® fluid.
Benefits:
Better anti-wear properties
Improved rust/corrosion prevention
Controls oxidation
Eliminates deposits
Controls friction
Retains anti-foaming properties
Superior properties for low temperature operation
Fluid color:
Mopar ATF+4® is a World Class Fluid having exceptional durability. However, the red dye used in ATF+4® is not permanent; as the fluid ages it may become darker or appear brown in color. ATF+4® also has a unique odor that may change with age. With ATF+4® fluid, color and odor are no longer indicators of fluid condition and do not support a fluid change.
FRONT AXLE WHINE (I6 / 4WD only)
Date: 09/14/01
Bulletin # 0300101A (supercedes 0300101 dated 02/02/01)
Model year(s): 1999-2001
Description: Some customers may experience a powertrain related sound which may be described as front axle whine.
Details: Applies to vehicles equipped with a 4.0L engine, A four wheel drive system, and built prior to Dec 15 2000. This bulletin involves the replacement of the front propeller shaft and front axle yoke.
Parts required:
1x 52105884AA Propshaft, Front.
1x 05019624AA Yoke, Front axle pinion.
1x 05017755AA Nut, Front Axle pinion.
2x J3240553 Strap, Front axle yoke.
4x J4006928 Bolt, Front axle yoke strap.
BRAKE ROUGHNESS OR PEDAL PULSATION
Date: 09/14/01
Bulletin # 0500501A (supercedes 0500501 Aug 10,2001)
Model year(s): 1999-2002
Description: Superceded by 0500302B dated 05/13/02.
OUTSIDE REARVIEW MIRROR GLASS REPLACEMENT
Date: 09/21/01
Bulletin # 2302701 (supercedes 2303400A dated 12/15/2000)
Model year(s): 1999-2002
Description: Superceded by 2301502 dated 4/01/02
45RFE AND 545RFE SHIFT QUALITY ENHANCEMENTS FOR THE 2-3, 4-5, AND 5-4 SHIFTS
Date: 10/15/01
Bulletin # 1802501 (supercedes 210900 dated 09/15/00)
Model year(s): 1999-2001
Description: This bulletin involves selec | 
