Diagnosis Procedure

HEADLAMP (LO) CIRCUIT

WITH DAYTIME RUNNING LIGHT SYSTEM : Diagnosis Procedure


1. CHECK ILLUMINATION STATUS OF HEADLAMPS

Check illumination status of headlamps.
Which headlamp does not turn ON?
RH- GO TO 2.
LH- GO TO 6.

2. CHECK HEADLAMP LO (RH) OUTPUT VOLTAGE

CONSULT ACTIVE TEST
1.Turn ignition switch OFF.
2.Remove daytime running light relay 1.
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 3.
NO- GO TO 8.

3. CHECK HEADLAMP LO (RH) OPEN CIRCUIT -1

1.Turn ignition switch OFF.
2.Disconnect IPDM E/R connector.
3.Check continuity between IPDM E/R harness connector and daytime running light relay 1 harness connector.





4.Check continuity between daytime running light relay 1 harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace harness.

4. CHECK HEADLAMP LO (RH) OPEN CIRCUIT-2

1.Disconnect headlamp connector.
2.Check continuity between daytime running light relay 1 harness connector and headlamp harness connector.





Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace harness.

5. CHECK DAYTIME RUNNING LIGHT RELAY 1

Check daytime running light relay 1. Component Inspection.
Is the inspection result normal?
YES- Replace headlamp bulb RH.
NO- Replace daytime running light relay 1.

6. CHECK HEADLAMP LO (LH) OUTPUT VOLTAGE

CONSULT ACTIVE TEST
1.Turn ignition switch OFF.
2.Disconnect headlamp LH 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 7.
NO- GO TO 12.

7. CHECK HEADLAMP LO (LH) OPEN CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect IPDM E/R connector.
3.Check continuity between IPDM E/R harness connector and headlamp LH harness connector.





Is the inspection result normal?
YES- Replace headlamp bulb LH.
NO- Repair or replace harness.

8. CHECK HEADLAMP LO (RH) 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 9.

9. CHECK HEADLAMP LO (RH) SHORT CIRCUIT- 1

1.Disconnect IPDM E/R connector.
2.Check continuity between IPDM E/R harness connector and ground.





Is the inspection result normal?
YES- GO TO 10.
NO- Repair or replace harness. And then replace the fuse.

10. CHECK DAYTIME RUNNING LIGHT RELAY 1

Check daytime running light relay 1. Component Inspection.
Is the inspection result normal?
YES- GO TO 11.
NO- Replace daytime running light relay 1.

11. CHECK HEADLAMP LO (RH) SHORT CIRCUIT-2

1.Disconnect headlamp RH connector.
2.Check continuity between Daytime running light relay 1 harness connector and ground.





Is the inspection result normal?
YES- Replace the fuse. (Replace IPDM E/R if the fuse is fusing again.)
NO- Repair or replace harness. And then replace the fuse.

12. CHECK HEADLAMP LO (LH) 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 13.

13. CHECK HEADLAMP LO (LH) 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 the fuse. (Replace IPDM E/R if the fuse is fusing again.)
NO- Repair or replace harness. And then replace the fuse.