With Daytime Running Light System

HEADLAMP (LO) CIRCUIT

WITH DAYTIME RUNNING LIGHT SYSTEM : Diagnosis Procedure


1. CHECK HEADLAMP LOW (LH) OUTPUT VOLTAGE

CONSULT ACTIVE TEST
1.Turn the ignition switch OFF.
2.Disconnect the headlamp LH connector.
3.Turn the ignition switch ON.
4.Select "EXTERNAL LAMPS" of IPDM E/R active test item.
5.With operating the test items, check the voltage between the IPDM E/R harness connector and the ground.





Is the measurement value normal?
YES- GO TO 2.
NO- GO TO 8.

2. CHECK HEADLAMP LOW (RH) OUTPUT VOLTAGE

CONSULT ACTIVE TEST
1.Turn the ignition switch OFF.
2.Remove the daytime running light relay-2.
3.Turn the ignition switch ON.
4.Select "EXTERNAL LAMPS" of IPDM E/R active test item.
5.With operating the test items, check the voltage between the IPDM E/R harness connector and the ground.





Is the measurement value normal?
YES- GO TO 3.
NO- GO TO 8.

3. CHECK HEADLAMP LOW (LH) OPEN CIRCUIT

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





Does continuity exist?
YES- GO TO 4.
NO- Repair the harnesses or connectors.

4. CHECK CONTINUITY BETWEEN IPDM E/R AND THE DAYTIME RUNNING LIGHT RELAY-2

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





Does continuity exist?
YES- GO TO 5.
NO- Repair the harnesses or connectors.

5. CHECK THE DAYTIME RUNNING LIGHT RELAY-2 GROUND OPEN CIRCUIT

Check continuity between the daytime running light relay-2 harness connector and the ground.





Does continuity exist?
YES- GO TO 6.
NO- Repair the harnesses or connectors.

6. CHECK CONTINUITY BETWEEN THE DAYTIME RUNNING LIGHT RELAY-2 AND HEADLAMP RH

1.Turn the ignition switch OFF.
2.Disconnect the headlamp RH connector.
3.Check continuity between the daytime running light relay-2 harness connector and the headlamp RH harness connector.





Does continuity exist?
YES- GO TO 7.
NO- Repair the harnesses or connectors.

7. CHECK THE DAYTIME RUNNING LIGHT RELAY-2

Check the daytime running light relay-2. Daytime Running Light Relay Circuit.
Is the daytime running light relay-2 normal?
YES- GO TO 10.
NO- Replace the daytime running light relay-2.

8. CHECK HEADLAMP (LO) FUSE

1.Turn the ignition switch OFF.
2.Check that the following fuses are not fusing.





Is the fuse fusing?
YES- GO TO 9.
NO- Replace IPDM E/R.

9. CHECK HEADLAMP (LO) SHORT CIRCUIT

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





Does continuity exist?
YES- Repair the harnesses or connectors. And then replace the fuse.
NO- Replace the fuse. (Replace IPDM E/R if the fuse is fusing again.)

10. CHECK HEADLAMP (LO) GROUND OPEN CIRCUIT (LH)

Check continuity between the headlamp LH harness connector and the ground.





Does continuity exist?
YES- GO TO 11.
NO- Repair the harnesses or connectors.

11. CHECK CONTINUITY BETWEEN HEADLAMP LOW (RH) AND DAYTIME RUNNING LIGHT RELAY-1

1.Remove the daytime running light relay-1.
2.Check continuity between the headlamp RH harness connector and the daytime running light relay-1 harness connector.





Does continuity exist?
YES- GO TO 12.
NO- Repair the harness or connector.

12. CHECK THE DAYTIME RUNNING LIGHT RELAY-1 GROUND OPEN CIRCUIT

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





Does continuity exist?
YES- GO TO 13.
NO- Repair the harness or connector.

13. CHECK THE DAYTIME RUNNING LIGHT RELAY-1

Check the daytime running light relay-1. Daytime Running Light Relay Circuit.
Is the daytime running light relay-1 normal?
YES- Replace the headlamp (LO) bulb. (Bulb socket is abnormally.)
NO- Replace the daytime running light relay-1.