With Daytime Running Light System Diagnosis Procedure

HEADLAMP (LO) CIRCUIT


WITH DAYTIME RUNNING LIGHT SYSTEM : Diagnosis Procedure

1.CHECK HEADLAMP LOW (LH) OUTPUT VOLTAGE
CONSULT-III 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-III 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. Component Inspection (2).
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. Component Inspection (1).
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.