Rear Air Control Circuit

REAR AIR CONTROL CIRCUIT


Description











AUTO SWITCH
- When pressing AUTO switch, air inlet, air outlet, fan speed, and discharge air temperature are automatically controlled.

FAN SWITCH
The fan speed is manually controlled with this switch. Seven speeds are available (5 speeds on display) for manual control (as shown on the display screen).

REAR TEMPERATURE CONTROL SWITCH
- Increases or decreases the passenger side set temperature and the air coming out of the center console.
- A temperature for the rear seat, with respect to a set temperature for the front seat, can be adjusted by operating the rear seat temperature switch.
- Rear temperature control switch allows for selection of temperature every 0.5�C (1�F) in the 18�C (60�F) to 32�C (90�F) range.

NOTE:
A set temperature for the rear seat is tied to a set temperature for the passenger's seat. Therefore, a set temperature for the rear seat changes in conjunction with a set temperature for the passenger's seat. The air temperature coming out of the center console is a mixture of the driver and passenger temperatures.




REAR AIR CONTROL CIRCUIT


Diagnosis Procedure


DIAGNOSIS PROCEDURE FOR REAR CONTROL SWITCH.
Regarding Wiring Diagram information, With Navi or Without Navi.
SYMPTOM: Rear control switch does not operate.
1.CHECK FOR AUDIO DTCS WITH CONSULT-III
Using CONSULT-III, perform "SELF-DIAGNOSIS RESULTS" of MULTI AV.
Are there any audio DTCs present?
YES - Go to audio DTC index. Testing and Inspection.
NO - GO TO 2.
2.CHECK A/C SYSTEM
Confirm A/C system operates from the A/C and AV switch assembly.
Is inspection result normal?
YES - GO TO 3.
NO - Go to trouble diagnosis procedure for A/C system. With Color Display.
3.CHECK A/C SYSTEM FROM REAR CONTROL SWITCH
1. Press the rear control cancel switch to the ON position.
2. Check A/C system operation from the rear control switch.
Is inspection result normal?
YES - Inspection End.
NO - GO TO 4.
4.CHECK REAR CONTROL SWITCH POWER SUPPLY





1. Turn ignition switch OFF.
2. Disconnect rear control switch connector.
3. Turn ignition switch ON.
4. Check voltage between rear control switch harness connector B402 terminal 1 and ground.

1 - Ground : Battery voltage

Is inspection result normal?
YES - GO TO 5.
NO - Check 10A fuse [No. 17 located in the fuse block (J/B)]. Fuse Block - Junction Box (J/B).
- If fuse is OK, check harness for open circuit. Repair or replace if necessary.
- If fuse is NG, check harness for short circuit and replace fuse.
5.CHECK REAR CONTROL SWITCH GROUND CIRCUIT





1. Turn ignition switch OFF.
2. Check continuity between rear control switch harness connector B402 terminal 4 and ground.

4 - Ground : Continuity should exist.

Is inspection result normal?
YES - GO TO 6.
NO - Repair harness or connector.
6.CHECK REAR CONTROL CANCEL SWITCH CIRCUIT





1. Disconnect rear control cancel switch.
2. Turn ignition switch ON.
3. Check voltage between rear control cancel switch harness connector M89 terminal 2 and ground.

2 - Ground : Approx. 8.0V

Is inspection result normal?
YES - GO TO 7.
NO - GO TO 8.
7.CHECK REAR CONTROL CANCEL SWITCH GROUND CIRCUIT





1. Turn ignition switch OFF.
2. Check continuity between rear control cancel switch harness connector M89 terminal 3 and ground.

3 - Ground : Continuity should exist.

Is inspection result normal?
YES - Replace rear control cancel switch. With Color Display
NO - Repair harness or connector.
8.CHECK CONTINUITY BETWEEN REAR CONTROL SWITCH AND REAR CONTROL CANCEL SWITCH





Check continuity between rear control switch harness connector
B402 (A) terminal 3 and rear control cancel switch harness connector M89 (B) terminal 2.

2 - 3 : Continuity should exist.

Is the inspection result normal?
YES - Replace rear control switch. With Color Display.
NO - Repair harness or connector.