Operational Check (Rear)

INSPECTION AND ADJUSTMENT


Operational Check (Rear)

The purpose of the operational check is to confirm that the system operates properly.

Conditions : Engine running and at normal operating temperature


CHECKING REAR BLOWER MOTOR
1. Turn the ignition switch ON.
2. Rotate rear air control (front) blower control dial to low speed.
3. Rotate the blower control dial clockwise and continue checking blower speed until all speeds are checked.
4. Leave blower on maximum speed.
5. Press the REAR CTRL switch from the rear air control (front).
6. Rotate rear air control (rear) blower control dial to low speed.
7. Rotate the blower control dial clockwise and continue checking blower speed until all speeds are checked.
8. Leave blower on maximum speed.
If NG, go to trouble diagnosis procedure for Rear Blower Motor Component Function Check.
If OK, continue with next check.

CHECKING REAR DISCHARGE AIR





1. The REAR CTRL indicator must be off. Press each rear air control (front) mode door switches and confirm the discharge air comes out relative to the icon on each switch and according to the air distribution table. Discharge Air Flow (Rear).
2. Press the REAR CTRL switch (indicator on) from the rear air control (front).
3. Press each rear air control (rear) mode door switches and confirm the discharge air comes out relative to the icon on each switch and according to the air distribution table. Discharge Air Flow (Rear).
Air mix door position is checked in the next step.
If NG, go to Air Mix Door Motor (Driver) Component Function Check.
If OK, continue with next check.

CHECKING REAR TEMPERATURE DECREASE
1. Press the REAR CTRL switch (indicator off).
2. Rotate the rear air control (front) temperature control dial counterclockwise to maximum cold.
3. Check for cold air at appropriate discharge air outlets.
4. Press the REAR CTRL switch (indicator on) from the rear air control (front).
5. Rotate the rear air control (rear) temperature control dial counterclockwise to maximum cold.
6. Check for cold air at appropriate discharge air outlets.
If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for Air Mix Door Motor (Driver) Component Function Check. If air mix door motor appears to be malfunctioning, go to Air Mix Door Motor (Rear) Diagnosis Procedure.
If OK, continue with next check.

CHECKING REAR TEMPERATURE INCREASE
1. Press the REAR CTRL switch (indicator off).
2. Rotate the rear air control (front) temperature control dial clockwise to maximum heat.
3. Check for hot air at appropriate discharge air outlets.
4. Press the REAR CTRL switch (indictor on) from the rear air control (front).
5. Rotate the rear air control (rear) temperature control dial clockwise to maximum heat.
6. Check for hot air at appropriate discharge air outlets.
If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for Air Mix Door Motor (Driver) Component Function Check. If air mix door motor appears to be malfunctioning, go to Air Mix Door Motor (Rear) Diagnosis Procedure.
If NG, go to trouble diagnosis procedure for Insufficient Heating.
If all operational checks are OK (symptom cannot be duplicated), go to How to Perform Trouble Diagnosis For Quick and Accurate Repair and perform tests as outlined. If symptom appears, Symptom Matrix Chart and perform applicable trouble diagnosis procedures.