Nissan Maxima Service and Repair Manual: 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 over 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. Refer to PCS-11, "Diagnosis Description".
  2. Check that the front fog lamp is turned ON.

CONSULT

  1. Select "EXTERNAL LAMPS" of IPDM E/R active test item.
  2. While operating the test item, check that the front fog lamp is turned ON.

FOG : Front fog lamp ON
OFF : Front fog lamp OFF

Diagnosis Procedure

1.CHECK FRONT FOG LAMP FUSE

  1. Turn the ignition switch OFF.
  2. Check that the following fuse is not open.

Nissan Maxima. CHECK FRONT FOG LAMP FUSE

2.CHECK FRONT FOG LAMP OUTPUT VOLTAGE

CONSULT

Nissan Maxima. 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. Select "EXTERNAL LAMPS" of IPDM E/R active test item.
  5. With EXTERNAL LAMPS ON, check the voltage between the fog lamp connector and ground.

Nissan Maxima. CHECK FRONT FOG LAMP OUTPUT VOLTAGE

3.CHECK FRONT FOG LAMP OPEN CIRCUIT

Nissan Maxima. CHECK FRONT FOG LAMP OPEN CIRCUIT

  1. Turn the ignition switch OFF.
  2. Disconnect IPDM E/R connector E200.
  3. Check continuity between the IPDM E/R harness connector (A) and the front fog lamp harness connector (B).

Nissan Maxima. CHECK FRONT FOG LAMP OPEN CIRCUIT

4.CHECK FRONT FOG LAMP GROUND CIRCUIT

Nissan Maxima. CHECK FRONT FOG LAMP GROUND CIRCUIT

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

Nissan Maxima. CHECK FRONT FOG LAMP GROUND CIRCUIT

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