Rear Control Switch Circuit

TROUBLE DIAGNOSIS


Rear Control Switch Circuit


DIAGNOSIS PROCEDURE FOR REAR CONTROL SWITCH
SYMPTOM: Rear control switch does not operate.
1.CHECK A/C SYSTEM
Check multifunction switch, confirm A/C system operation.
OK or NG
OK - GO TO 2.
NG - Go to trouble diagnosis procedure for A/C system. Refer to Power Supply and Ground Circuit.
2.CHECK REAR CONTROL SWITCH
Check rear control switch, except for A/C switch (audio) operation.
OK or NG
OK - GO TO 5.
NG - GO TO 3.
3.CHECK POWER SUPPLY FOR REAR CONTROL SWITCH
1. Turn ignition switch OFF.
2. Disconnect rear control switch connector.
3. Turn ignition switch ACC.





4. Check voltage between rear control switch harness connector
B554 terminal 1 and ground.

1 - Ground : Battery voltage

OK or NG
OK - GO TO 4.
NG - Check 10A fuse [No. 6 located in the fuse block (J/B)]. Refer to 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.
4.CHECK GROUND CIRCUIT FOR REAR CONTROL SWITCH
1. Turn ignition switch OFF.





2. Check continuity between rear control switch harness connector
B554 terminal 4 and ground.

4 - Ground : Continuity should exist.

OK or NG
OK - GO TO 5.
NG - Repair harness or connector.
5.CHECK REAR CONTROL SWITCH, AV CONTROL UNIT
Check circuit between rear control switch and AV control unit. Refer to Diagnosis Description.
OK or NG
OK - Replace rear control switch.
NG - Replace part or repair for result trouble diagnosis.