Diagnosis Procedure

TRUNK ROOM LAMP SWITCH CIRCUIT


Description

Transmits trunk room lamp switch signal to trunk closure control unit through trunk closure sub-control unit.




TRUNK ROOM LAMP SWITCH CIRCUIT


Diagnosis Procedure

1.CHECK TRUNK ROOM LAMP SWITCH SIGNAL 1
1. Turn ignition switch OFF.
2. Disconnect trunk closure control unit connector.
3. Check voltage between trunk closure control unit harness connector and ground.





Is the inspection result normal?
YES - Trunk room lamp switch circuit is OK.
NO - GO TO 2.
2.CHECK TRUNK ROOM LAMP SWITCH SIGNAL CIRCUIT
1. Disconnect trunk closure sub-control unit connector.
2. Check continuity between trunk closure sub-control unit harness connector and trunk closure control unit harness connector.





3. Check continuity between trunk closure sub-control unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace harness.
3.CHECK TRUNK ROOM LAMP SWITCH INPUT SIGNAL 2
Check signal between trunk closure sub-control unit harness connector and ground using oscilloscope.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace harness.
4.CHECK TRUNK CLOSURE SUB-CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT
Trunk Closure Sub-Control
Is the inspection result normal?
YES - GO TO 5.
NO - Replace trunk closure sub-control unit.
5.CHECK INTERMITTENT INCIDENT
Refer to Intermittent Incident.
- INSPECTION END