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HVAC sub assembly replacement

Part 4 - Blend door actuator removal and installation

Part 1 - Instrument panel removal

Part 2 - HVAC sub assembly removal and installation

Part 3 - Instrument panel installation

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Part 4 - Blend door actuator removal and installation

A blend door actuator is used on all models, whether equipped with manual or Automatic Zone Control (AZC). For Manual systems, the actuator is located on the front of the HVAC housing to the right of the floor panel transmission tunnel, and can be removed from the passenger compartment without instrument panel or HVAC housing removal. Auto (AZC) systems use two actuators. The AZC drivers side actuator can also be removed from the passemger compartment without removing the instrument panel. The passenger side, however, requires complete removal of the instrument panel and HVAC assembly.


WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN AN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.


Removal - AZC system (Passenger side only)

The passenger side blend door actuator is used on all models equipped with Automatic Zone Control (AZC). This actuator is located on the front of the HVAC housing to the right of the floor panel transmission tunnel, and cannot be removed from the passenger compartment without instrument panel and HVAC housing removal.

1. Remove the dash assembly (see Part 1)

2. Remove the HVAC assembly (see Part 2)

3. Unplug the wire harness connector from the blend door actuator (Fig. 18).

4. Remove the 2 screws that secure the blend door actuator to the HVAC housing.

5. Remove the blend door actuator from the HVAC housing.


Removal - Manual system (single unit passenger/driver) and AZC system (driver side only)

1. Disconnect and isolate the battery negative cable.

2. Remove the glove box door. (see part 1)

3. Remove the lower I/P glove box door surround panel (see Part 1).

4. Unplug the wire harness connector from the blend door actuator (Fig. 17).

5. Remove the 2 screws that secure the blend door actuator to the HVAC housing.

6. Remove the blend door actuator from the HVAC housing.


Blend door actuator

Figure 17
    
Blend door actuator

Figure 18



Installation - Manual system (single unit passenger/driver) & AZC (Driverside only)

1. Install the blend door actuator on the HVAC housing and tighten the two mounting screws to 2.2 Nm (20 in. lbs.).

2. Plug in the wire harness connector to the blend door actuator.

3. Install the glove box door (see part 3)

4. Install the lower I/P glove box door surround panel (see part 3)

5. Connect and the battery negative cable.


Installation - AZC (Passenger side only)

(1) Install the blend door actuator on the HVAC housing and tighten the two mounting screws to 2.2 Nm (20 in. lbs.).

(2) Plug in the wire harness connector to the blend door actuator.

(3) Install the HVAC unit into the vehicle (see part 2)

(4) Install the instrument panel assembly into the vehicle (see Part 3).

(5) Evacuate the HVAC system

(6) Recharge the HVAC system

(7) Connect and the battery negative cable.





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