Canada - A/C - Rear A/C Vents Blow Hot Air With A/C On

Bulletin
TSB2956

Issue Date
December 17, 2007

market
Canada

Title
REAR HVAC VENTS BLOW HOT AIR WITH A/C "ON"

Component
HEAT & AIR CONDITIONING

Models
'05 - '07 Avalon

TSB REVISION NOTICE:
- August 1, 2008: Step 5 of the Repair Procedure has been updated.
The previous TSB should be discarded.

INTRODUCTION:

Some customers may experience a condition where the rear center vents blow warmer air than the front center vents. A new HVAC servo motor has been designed to correct this concern. Follow the procedures listed in this bulletin to remove and replace the HVAC servo motor.

APPLICABLE VEHICLES:
- 2005 - 2007 model year Avalon vehicles produced BEFORE the Production Change Effective VIN shown below.






PRODUCTION CHANGE INFORMATION:






WARRANTY:






PARTS INFORMATION:






REQUIRED SSTs:

NOTE:
Additional refrigerant service equipment may be ordered by calling Toyota Approved Dealer Equipment Service at 1-866-868-3372.

REPAIR PROCEDURE:

1. Remove the air conditioning unit.

Refer to the Repair Manual within E-TAS / TIS library:
- Division: Toyota
- Model: Avalon
- Year: 2005
- Service Category: Vehicle Interior
- Section: Heating/Air Conditioning
- Keyword: Blower Assy: Overhaul







2. Remove the No. 2 air duct sub-assembly by releasing the 2 claws as shown in Figure 1.







3. Remove the blower assembly.
A. Remove the connector and clamp, and disconnect the wire harness.







B. Remove the 6 screws and then the blower assembly with the cooler-evaporator sub-assembly.

4. Remove the air outlet control servo motor.







A. Disconnect the 2 connectors and remove the air conditioner harness.







B. Remove the 3 screws and then remove the air outlet control servo motor.

5. Install the NEW air outlet control servo motor.







A. Align the air conditioning unit servo arms and gears. Refer to Figure 6.







1. Rotate arm "A" clockwise until the end of travel.







2. Rotate arm "B" counterclockwise until the end of travel.







3. Rotate arm "C" counterclockwise until the end of travel.







4. Rotate cam "D" clockwise until the end of travel.







5. Rotate the arm "E" counterclockwise until the end of travel.







6. Align the leading edge of cam "F" with the line casting in the case.







B. Install the air outlet control servo motor with the 3 screws.







C. Install the air conditioner harness and connect the 2 connectors.

6. Install the blower assembly.







A. Install the blower assembly with the 6 screws.







B. Connect the wire harness and install the connector and clamp.







7. Install the No. 2 air duct sub-assembly by engaging the 2 claws.
8. Install the air conditioning unit.

Refer to the Repair Manual within E-TAS / TIS library:
- Division: Toyota
- Model: Avalon
- Year: 2005
- Service Category: Vehicle Interior
- Section: Heating/Air Conditioning
- Keyword: Blower Assy: Overhaul

- Year: 2006-2007
- Service Category: Vehicle Interior
- Section: Heating/Air Conditioning
- Keyword: Air Conditioning: Air Conditioning Unit: Installation

9. Verify the heater and air conditioner operate correctly with the air directed in each mode.

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.