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

Nissan Maxima Service and Repair Manual / Driver controls / Exterior lighting system / DTC/circuit diagnosis / 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:

    Relay control system
    System Diagram System Description IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input signals from various sensors and the request signals received from control units via CAN communication. CAUTION: IPDM E/R integrated relays cann ...

    Changing engine coolant
    A NISSAN dealer can change the engine coolant. The service procedure can be found in the NISSAN Service Manual. Improper servicing can result in reduced heater performance and engine overheating. WARNING To avoid the danger of being scalded, never change the coolant when the engine is ...

    IPDM E/R (intelligent power distribution module engine room)
    Reference Value VALUES ON THE DIAGNOSIS TOOL TERMINAL LAYOUT PHYSICAL VALUES Fail Safe CAN COMMUNICATION CONTROL When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN communication recovers normally, it also returns to normal ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2024 Copyright www.nimainfo.com
    0.0053