Headlamp (Lo) Circuit

HEADLAMP (LO) CIRCUIT





Component Function Check
1.CHECK HEADLAMP (LO) OPERATION
CONSULT-III ACTIVE TEST
1. Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2. With operating the test items, check that the headlamp (LO) is turned ON.

Lo : Headlamp (LO) ON
Off : Headlamp (LO) OFF

Is the inspection result normal?
YES - Headlamp (LO) is normal.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK HEADLAMP (LO) OUTPUT VOLTAGE
CONSULT-III ACTIVE TEST
1. Turn ignition switch OFF.
2. Disconnect front combination lamp connector.
3. Turn ignition switch ON.
4. Select "EXTERNAL LAMPS" of IPDM E/R active test item.
5. With operating the test items, check voltage between IPDM E/R harness connector and ground.





Is the inspection result normal?
YES - GO TO 2.
NO - GO TO 3.
2.CHECK HEADLAMP (LO) OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector and front combination lamp harness connector.





Is the inspection result normal?
YES - GO TO 5.
NO - Repair or replace harness.
3.CHECK HEADLAMP (LO) FUSE
1. Turn ignition switch OFF.
2. Check that the following fuses are not fusing.





Is the inspection result normal?
YES - Replace IPDM E/R.
NO - GO TO 4.
4.CHECK HEADLAMP (LO) SHORT CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R harness connector and ground.





Is the inspection result normal?
YES - Replace fuse. (Replace IPDM E/R if the fuse is fusing again.)
NO - Repair or replace harness. And then replace the fuse.
5.CHECK HEADLAMP (LO) GROUND OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front combination lamp connector.
3. Check continuity between front combination lamp harness connector and ground.





Is the inspection result normal?
YES - Perform the xenon headlamp diagnosis. Xenon Headlamp.
NO - Repair or replace harness.