A/C - ATC Indicators Intermittently Inoperative

December 3, 1999

AC005-99

AUTO A/C SYSTEM IMPROVEMENT

Introduction
A production change has been made for the 1998 - 1999 Avalon A/C Amplifier. The internal logic has been corrected to eliminate excessive Air Inlet Servo Motor travel, which may affect the motor and/or the servo-link.

Vehicles with automatic A/C may intermittently experience one or more of the following conditions:
- The ambient temperature display may go blank or display
- Fresh/Recirc indicator light inoperative.
- Mode indicator light inoperative.
- Blower indicator light inoperative.

NOTE: A/C system may restore to normal condition upon cycling the ignition switch.

Applicable Vehicles
All 1998 Model Year Avalon XLS produced before VIN: 4T1BF18B*WU273780




Parts Information




Warranty Information


Repair Procedure
1. Remove the Heater Control assembly and replace the A/C amplifier as per the part number.






2. Follow the repair manual procedures for Blower (housing) assembly removal. Remove and replace the Air Inlet Servo Motor.





3. Inspect the condition of the Servo Link (Damper-plate) for damage as illustrated. Replace if necessary.