Component Tests and General Diagnostics

DAYTIME LIGHT RELAY CIRCUIT

Description

The BCM sends a daytime light request to the IPDM E/R via the CAN communication lines. The power flows through fuse 43 located in IPDM E/R to the daytime light relay coil. When the IPDM E/R operates the daytime light relay, power is sent to the daytime lamps.


Diagnosis Procedure

Regarding Wiring Diagram information, refer to "Wiring Diagram" [1][2]Daytime Running Lamp.

1. CHECK DAYTIME LIGHT RELAY VOLTAGE SUPPLY

1.Turn the ignition switch OFF.
2.Disconnect the daytime light relay harness connector E4.
3.Turn the ignition switch ON.
4.Check the voltage between the following daytime light relay harness connector E4 terminals and ground.





Is the inspection results normal?
YES- GO TO 3.
NO- GO TO 2.

2. CHECK DAYTIME LIGHT RELAY CIRCUIT

1.Turn the ignition switch OFF.
2.Disconnect IPDM E/R harness connector E121.
3.Check continuity between the IPDM E/R harness connector E121 and the daytime light relay harness connector E4.





4.Check continuity between the IPDM E/R harness connector E121 and ground.





Is the inspection results normal?
YES- Replace IPDM E/R. Refer to "Removal and Installation" Service and Repair.
NO- Repair or replace the harnesses or connectors.

3. CHECK DAYTIME LAMP RELAY COIL CIRCUIT

1.Check continuity between the IPDM E/R harness connector E218 and daytime light relay harness connector E4.
Revision: March 20122013 Infiniti JX





2.Check continuity between the IPDM E/R harness connector E218 and ground.





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

4. CHECK DAYTIME LIGHT RELAY

Check the daytime light relay. Refer to "Component Inspection" .
Is the inspection results normal?
YES- GO TO 6.
NO- Replace relay.

5. CHECK DAYTIME LAMP CIRCUIT FOR OPEN

1.Turn the ignition switch OFF.
2.Disconnect the front fog lamp harness connector E303 or E304 in question.
3.Check continuity between the daytime light relay harness connector E4 and the front fog lamp harness connector E303 or E304.





Is the inspection results normal?
YES- GO TO 6.
NO- Repair or replace the harnesses or connectors.

6. CHECK DAYTIME LAMP GROUND CIRCUIT FOR OPEN

1.Turn the ignition switch OFF.
2.Disconnect front fog lamp harness connector E303 or E304 in question.
3.Check continuity between the front fog lamp harness connector E303 or E304 terminal 12 and ground.





Does continuity exist?
YES- Inspection End.
NO- Repair or replace the harnesses or connectors.


Component Inspection


1. CHECK DAYTIME LIGHT RELAY

1.Turn ignition switch OFF.
2.Remove daytime light relay.
3.Check the continuity between daytime light relay terminals 3 and 5 and 6 and 7 when voltage is supplied between terminals 1 and 2.
Revision: March 20122013 Infiniti JX





Is the inspection result normal?
YES- Inspection End.
NO- Replace daytime light relay.
Revision: March 20122013 Infiniti JX