Daytime Running Light Relay Circuit

DAYTIME RUNNING LIGHT RELAY CIRCUIT

Component Function Check


1. CHECK DAYTIME RUNNING LIGHT OPERATION

IPDM E/R AUTO ACTIVE TEST
1.Activate IPDM E/R auto active test. Refer to "Diagnosis Description" Diagnosis Description.
2.Check that the parking lamp and tail lamp are turned ON.
CONSULT ACTIVE TEST
1.Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2.With operating the test item, check that parking lamp and tail lamp are turned ON.

TAIL : Parking lamp and tail lamp ON
Off : Parking lamp and tail lamp OFF

Are parking lamp and tail lamp turned ON?
YES- Daytime running light relay circuit is normal.
NO- Refer to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK DAYTIME RUNNING LIGHT RELAY FUSE

Check that the following fuse is not fusing.





Is the fuse fusing?
YES- Replace the fuse after repairing the applicable circuit.
NO- GO TO 2.

2. CHECK DAYTIME RUNNING LIGHT RELAY POWER SUPPLY

1.Remove the daytime running light relay.
2.Check voltage between the daytime running light relay harness connector and the ground.





Is the measurement value normal?
YES- GO TO 3.
NO- Repair harnesses or connectors.

3. CHECK DAYTIME RUNNING LIGHT RELAY

Check the daytime running light relay. Refer to "Component Inspection" .
Is the daytime running light relay normal?
YES- GO TO 4.
NO- Replace daytime running light relay.

4. CHECK DAYTIME RUNNING LIGHT RELAY CONTROL SIGNAL OUTPUT

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





Is the measurement value normal?
YES- Check the parking lamp circuit. Refer to "WITHOUT DAYTIME RUNNING LIGHT SYSTEM : Diagnosis Procedure" Xenon Type Without Daytime Running Light System.
Fixed at 0 V - GO TO 5.
Fixed at battery voltage -Replace IPDM E/R.

5. CHECK DAYTIME RUNNING LIGHT RELAY CONTROL SIGNAL OPEN CIRCUIT

1.Remove the daytime running light relay.
2.Disconnect IPDM E/R harness connector.
3.Check continuity between the IPDM E/R harness connector and the daytime running light relay harness connector.





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

6. CHECK DAYTIME RUNNING LIGHT RELAY CONTROL SIGNAL SHORT CIRCUIT

Check continuity between the IPDM E/R harness connector and the ground.





Does continuity exist?
YES- Repair the harnesses or connectors.
NO- Replace IPDM E/R.


Component Inspection


1. CHECK DAYTIME RUNNING LIGHT RELAY

1.Turn the ignition switch OFF.
2.Remove the daytime running light relay.
3.Apply battery voltage to the daytime running light relay between the terminals 1 and 2.
4.Check continuity of the daytime running light relay.





Does continuity exist?
YES- Daytime running light relay is normal.
NO- Replace daytime running light relay.