Headlamp (HI) Circuit

HEADLAMP (HI) CIRCUIT

Component Function Check


1. CHECK HEADLAMP (HI) OPERATION

IPDM E/R AUTO ACTIVE TEST
1.Start IPDM E/R auto active test. With Intelligent Key System (with Intelligent Key) or Without Intelligent Key System (without Intelligent Key).
2.Check that the headlamp switches to the high beam.
CONSULT ACTIVE TEST
1.Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2.With operating the test items, check that the headlamp (HI) is turned ON.
Hi: Headlamp (HI) ON
Off: Headlamp (HI) OFF
NOTE:
ON/OFF is repeated 1 second each.
Is the headlamp (HI) turned ON?
YES- Headlamp (HI) circuit is normal.
NO- .


Diagnosis Procedure


1. CHECK HEADLAMP (HI) OUTPUT VOLTAGE

CONSULT ACTIVE TEST
1.Turn the ignition switch OFF.
2.Disconnect the headlamp 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 3.

2. CHECK HEADLAMP (HI) 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 harness connector.





Does continuity exist?
YES (Without daytime running light system)-GO TO 5.
YES (With daytime running light system)-GO TO 6.
NO- Repair the harnesses or connectors.

3. CHECK HEADLAMP (HI) FUSE

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





Is the fuse fusing?
YES- GO TO 4.
NO- Replace IPDM E/R.

4. CHECK HEADLAMP HIGH (HI) 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.)

5. CHECK HEADLAMP (HI) GROUND OPEN CIRCUIT

Check continuity between the headlamp harness connector and the ground.





Does continuity exist?
YES- Replace the headlamp (HI) bulb.
NO- Repair the harnesses or connectors.

6. CHECK HEADLAMP (HI) GROUND OPEN CIRCUIT (LH)

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





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

7. CHECK CONTINUITY BETWEEN HEADLAMP HIGH (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 8.
NO- Repair the harness or connector.

8. 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 9.
NO- Repair the harness or connector.

9. 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 (HI) bulb.
NO- Replace the daytime running light relay-1.