Component Tests and General Diagnostics

FRONT FOG LAMP CIRCUIT

Description

The IPDM E/R (intelligent power distribution module engine room) controls the front fog lamp relay based on inputs from the BCM via the CAN communication lines. When the front fog lamp relay is energized, power flows from the front fog lamp relay in the IPDM E/R to the front fog lamps.


Component Function Check


1. CHECK FRONT FOG LAMP OPERATION

WITHOUT CONSULT
1.Activate IPDM E/R auto active test. Diagnosis Description.
2.Check that the front fog lamp is turned ON.
WITH CONSULT
1.Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2.With operating the test items, Check that the front fog lamp is turned ON.

Fog: Front fog lamp ON
Off: Front fog lamp OFF

Is the front fog lamp turned ON?
YES- Front fog lamp circuit is normal.
NO- .


Diagnosis Procedure

Regarding Wiring Diagram information, [1][2]Electrical Diagrams.

1. CHECK FRONT FOG LAMP FUSE

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 FRONT FOG LAMP OUTPUT VOLTAGE






1.Turn the ignition switch OFF.
2.Disconnect the front fog lamp connector.
3.Turn the ignition switch ON.
4.Turn the front fog lamps ON.
5.Check the voltage between the fog lamp connector and ground.





Is battery voltage present?
YES- GO TO 4
NO- GO TO 3

3. CHECK FRONT FOG LAMP OPEN CIRCUIT






1.Turn the ignition switch OFF.
2.Disconnect IPDM E/R connector E123.
3.Check continuity between the IPDM E/R harness connector (A)
and the front fog lamp harness connector (B).





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

4. CHECK FRONT FOG LAMP GROUND CIRCUIT

1.Disconnect the front fog lamp connector.
2.Check continuity between the front fog lamp harness connector terminal and ground.





Does continuity exist?
YES- Inspect the fog lamp bulb.
NO- Repair the harness.