Nissan Maxima Service and Repair Manual: Headlamp (LO) circuit

Description

The IPDM E/R (intelligent power distribution module engine room) controls the headlamp low relay based on inputs from the BCM over the CAN communication lines. When the headlamp low relay is energized, power flows through fuses 51 and 52, located in the IPDM E/R. Power then flows to the front combination lamps to the headlamp low beam.

Component Function Check

1.CHECK HEADLAMP (LO) OPERATION

WITHOUT CONSULT

  1. Start IPDM E/R auto active test. Refer to PCS-11, "Diagnosis Description".
  2. Check that the headlamp is turned ON.

NOTE: HI/LO is repeated 1 second each when using the IPDM E/R auto active test.

CONSULT

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

LO : Headlamp ON
OFF : Headlamp OFF

Diagnosis Procedure

1.CHECK HEADLAMP (LO) FUSES

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

Nissan Maxima. CHECK HEADLAMP (LO) FUSES

2.CHECK HEADLAMP (LO) OUTPUT VOLTAGE

CONSULT

  1. Turn the ignition switch OFF.
  2. Disconnect the front combination 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 combination lamp connector and ground.

3.CHECK HEADLAMP (LO) CIRCUIT FOR OPEN

Nissan Maxima. CHECK HEADLAMP (LO) CIRCUIT FOR OPEN

  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 combination lamp harness connector (B

Nissan Maxima. CHECK HEADLAMP (LO) CIRCUIT FOR OPEN

4.CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT

Nissan Maxima. CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT

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

Nissan Maxima. CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT

    Headlamp (HI) circuit
    Description The IPDM E/R (intelligent power distribution module engine room) controls the headlamp high relay based on inputs from the BCM over the CAN communication lines. When the headlamp high ...

    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 la ...

    Other materials:

    Inspection and adjustment
    Preliminary Check 1. FOREIGN OBJECTS Check the following: objects on or behind the seats that could cause binding objects under the seats that may be interfering with the seat's moving parts objects under pedals that may interfere with movement Are there any foreign objects that coul ...

    P1212 TCS communication line
    Description This CAN communication line is used to control the smooth engine operation during the TCS operation. Pulse signals are exchanged between ECM and "ABS actuator and electric unit (control unit)". Be sure to erase the malfunction information such as DTC not only for "ABS actuato ...

    P1740 select solenoid
    Description  The lock-up select solenoid valve controls lock-up clutch pressure or forward clutch pressure (reverse brake pressure).  When controlling lock-up clutch, the valve is turned OFF. When controlling forward clutch, it is turned ON. DTC Logic DTC DET ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2020 Copyright www.nimainfo.com
    0.015