Rear Air Control Component Function Check

REAR AIR CONTROL SYSTEM


Rear Air Control Component Function Check

SYMPTOM:
- Temperature cannot be adjusted from the rear air control.

INSPECTION FLOW
1.CONFIRM SYMPTOM BY PERFORMING REAR AIR CONTROL (FRONT) OPERATIONAL CHECK
1. Press AUTO switch (rear air controls only operate when front blower is on).
2. Turn the rear blower motor to maximum speed from the rear air control (front).
3. Turn rear air control (front) temperature/mode control dial clockwise and then counterclockwise (REAR
CTRL indicator off).
4. Check for hot air at rear floor discharge air outlets in the maximum heat position and cold air at rear roof discharge air outlets in the maximum cold position.
Does the rear air control (front) operate properly?
YES - GO TO 2.
NO - Check rear air control (front). Rear Air Control (Front) Diagnosis Procedure.
2.CONFIRM SYMPTOM BY PERFORMING REAR AIR CONTROL (REAR) OPERATIONAL CHECK
1. Press the REAR CTRL switch on rear air control (front) to send control to the rear air control (rear).
2. Turn the rear blower motor to maximum speed from the rear air control (rear).
3. Turn rear air control (rear) temperature/mode control dial slowly clockwise and then counterclockwise
(REAR CTRL indicator on).
4. Check for hot air at rear floor discharge air outlets in the maximum heat position and cold air at rear roof discharge air outlets in the maximum cold position.
Does the rear air control (rear) operate properly?
YES - GO TO 3.
NO - Check rear air control (rear). Rear Air Control (Rear) Diagnosis Procedure.
3.CHECK FOR ANY SYMPTOMS
Perform a complete operational check (rear) for any symptoms.
Does another symptom exist?
YES - How To Perform Trouble Diagnosis For Quick And Accurate Repair.
NO - System OK.
4.CHECK FOR SERVICE BULLETINS
Check for any service bulletins.
- GO TO 5.
5.CONFIRM SYMPTOM BY PERFORMING REAR AIR CONTROL (REAR) OPERATIONAL CHECK
Perform rear air control operation diagnosis to check for any codes. Operational Check (Rear).
Are any symptoms present?
YES - Symptom Matrix Chart.
NO - System OK.