Inspection Flow
- CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE INCREASE
- Turn front blower switch on (rear air control only operates when front blower is on).
- Press REAR CTRL switch on the rear air control (front).
- Turn rear air control (rear) temperature control dial clockwise.
- Check for hot air at rear floor discharge air outlets.
Does hot air blow from rear floor discharge air outlets?
YES: Perform a complete operational check for any symptoms. Refer to "OPERATIONAL CHECK (REAR) ".
No: GO TO 2.
- CONFIRM SYMPTOM BY PERFORMING OPERATIONAL CHECK - TEMPERATURE DECREASE
- Turn rear air control (rear) temperature control dial counterclockwise.
- Check for cold air at rear vent discharge air outlets.
Can the symptom be duplicated?
Yes: GO TO 4.
No: GO TO 3.
- CHECK FOR ANY SYMPTOMS
Perform a complete operational check for any symptoms. Refer to "OPERATIONAL CHECK (REAR) ".
Does another symptom exist?
YES: Refer to "SYMPTOM TABLE ".
NO: System OK.
- CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
Have any service bulletins been issued?
YES: Refer to applicable service bulletin.
No: GO TO 5.
- PERFORM SELF-DIAGNOSIS
Perform self-diagnosis to check for any codes. Refer to "A/C SYSTEM SELF-DIAGNOSIS FUNCTION ".
Are any self-diagnosis codes present?
YES: Refer to "SELF-DIAGNOSIS CODE CHART ".
No: GO TO 6.
- CHECK REAR BLOWER AIR OUTLET POSITION CHANGE
- Turn front blower switch on.
- Turn the rear temperature/mode (front) dial to maximum heat.
- Check for hot air at rear floor discharge air outlets.
- Turn the rear temperature/mode (front) dial to maximum cold.
- Check for cold air at rear vent discharge air outlets.
Does rear outlet position and temperature change when adjusted from front air control?
YES: Check the rear air control circuit. Refer to "DIAGNOSTIC PROCEDURE FOR REAR AIR CONTROL (REAR) ".
NO: Check air mix door motor circuit. Refer to "DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR (REAR) ".