Parking Lamp: Testing and Inspection

Parking Lamp Circuit Check

Description

The IPDM E/R (intelligent power distribution module engine room) controls the tail lamp relay based on inputs from the BCM via the CAN communication lines. When the tail lamp relay is energized, power flows through fuse 36 and 37, located in the IPDM E/R. Power then flows to the front and rear combination lamps, license plate lamps.

Component Function Check

1. CHECK PARKING LAMP OPERATION

WITHOUT SDT
1 Activate IPDM E/R auto active test. Refer to [Diagnosis System (IPDM E/R): Diagnosis Description] Diagnosis System (IPDM E/R) Diagnosis Description.
2 Check that the parking lamp is turned ON.
WITH SDT
1 Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2 With operating the test items, check that the parking lamp is turned ON.






Is the parking lamp turned ON?
YES
Parking lamp circuit is normal.
NO
Refer to "Diagnosis Procedure".

Diagnosis Procedure

Regarding Wiring Diagram information, refer to [Parking, License Plate and Tail Lamps System: Wiring Diagram] Electrical Diagrams.

1. CHECK PARKING LAMP FUSES

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






Is the fuse open?
YES
Replace the fuse after repairing the affected circuit.
NO
GO TO 2

2. CHECK TAIL LAMP RELAY OUTPUT (VOLTAGE)

1 Turn the ignition switch OFF.
2 Disconnect the front combination lamp connectors, front side marker lamp connectors, rear combination lamp connectors and license plate lamp connectors.
3 Turn the ignition switch ON.
4 Turn the parking lamps ON.
5 With the parking lamps ON, check voltage between the front combination lamp connector and ground.






6 With the parking lamps ON, check voltage between the front side marker lamp connector and ground.






7 With the parking lamps ON, check voltage between the rear combination lamp connector and ground.






8 With the parking lamps ON, check voltage between the license plate lamp connector and ground






Are voltage readings as specified?
YES
GO TO 4
NO
GO TO 3

3. CHECK PARKING, LICENSE PLATE AND TAIL LAMP CIRCUIT (OPEN)

1 Turn the ignition switch OFF.
2 Disconnect IPDM E/R connector E121, E123 and E124.
3 Check continuity between the IPDM E/R harness connector and the front combination lamp harness connector.






4 Check continuity between the IPDM E/R harness connector and the front side marker lamp harness connector.






5 Check continuity between the IPDM E/R harness connector and the rear combination lamp harness connector.






6 Check continuity between the IPDM E/R harness connector and license plate lamp connector.






Are continuity results as specified?
YES
Replace IPDM E/R. Refer to [IPDM E/R: Removal and Installation of IPDM E/R] Service and Repair.
NO
Repair the harnesses or connectors.

4. CHECK PARKING, LICENSE AND TAIL LAMP GROUND CIRCUITS

1 Check continuity between the front combination lamp harness connector and ground.






2 Check continuity between the front side marker lamp harness connector and ground.






3 Check continuity between the rear combination lamp harness connector and ground.






4 Check continuity between the license plate lamp harness connector and ground.






Are continuity results as specified?
YES
Inspect the parking lamp bulb.
NO
Repair the harness.