Nissan Maxima Service and Repair Manual: 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 relay is energized, power flows through fuses 48 and 49, located in the IPDM E/R. Power then flows to the front combination lamps to the headlamp high beam.

Component Function Check

1.CHECK HEADLAMP (HI) OPERATION

WITHOUT CONSULT

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

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 switches to the high beam.

HI : Headlamp switches to the high beam.
OFF : Headlamp OFF

Diagnosis Procedure

1.CHECK HEADLAMP (HI) FUSES

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

Nissan Maxima. CHECK HEADLAMP (HI) FUSES

2.CHECK HEADLAMP (HI) OUTPUT VOLTAGE

CONSULT ACTIVE TEST

Nissan Maxima. CHECK HEADLAMP (HI) OUTPUT VOLTAGE

  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 LAMP ON, check the voltage between the combination lamp connector and ground.

Nissan Maxima. CHECK HEADLAMP (HI) OUTPUT VOLTAGE

3.CHECK HEADLAMP (HI) CIRCUIT FOR OPEN

Nissan Maxima. CHECK HEADLAMP (HI) 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 (HI) CIRCUIT FOR OPEN

4.CHECK FRONT COMBINATION LAMP (HI) GROUND CIRCUIT

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

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

5.CHECK CONTINUITY BETWEEN FRONT COMBINATION LAMP RH (HI) AND DAYTIME LIGHT RELAY

  1. Disconnect daytime light relay connector.
  2. Check continuity between front combination lamp RH harness connector and daytime light relay harness connector.

6.CHECK DAYTIME LIGHT RELAY GROUND CIRCUIT

Check continuity between daytime light relay harness connector and ground.

Nissan Maxima. CHECK DAYTIME LIGHT RELAY GROUND CIRCUIT

7.CHECK DAYTIME LIGHT RELAY FUSE

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

Nissan Maxima. HECK DAYTIME LIGHT RELAY FUSE

8.CHECK DAYTIME LIGHT RELAY CIRCUIT FOR OPEN

  1. Disconnect IPDM E/R connector E18 and E201.
  2. Check continuity between the IPDM E/R harness connector and the daytime light relay harness connector.

Nissan Maxima. CHECK DAYTIME LIGHT RELAY CIRCUIT FOR OPEN

9.CHECK DAYTIME LIGHT RELAY

Check daytime light relay

Component Inspection

1. CHECK DAYTIME LIGHT RELAY

  1. Turn ignition switch OFF.
  2. Remove daytime light relay.
  3. Check the continuity between daytime light relay terminals under the following conditions.

Nissan Maxima. CHECK DAYTIME LIGHT RELAY

Nissan Maxima. CHECK DAYTIME LIGHT RELAY

    Power supply and ground circuit
    BCM (BODY CONTROL MODULE) BCM (BODY CONTROL MODULE) : Diagnosis Procedure 1. CHECK FUSE AND FUSIBLE LINK Check if the following BCM fuses or fusible link are blown. 2. CHECK POWER SUPPLY CIRCU ...

    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 r ...

    Other materials:

    Combination switch reading system
    System Diagram System Description OUTLINE BCM reads the status of the combination switch (light, turn signal, wiper and washer) and recognizes the status of each switch. BCM has a combination of 5 output terminals (OUTPUT 1 - 5) and 5 input terminals (INPUT 1 - 5) and reads a maximum ...

    Engine compartment check locations
    VQ35DE engine 1. Engine coolant reservoir 2. Drive belt location 3. Engine oil filler cap 4. Brake fluid reservoir 5. Air cleaner 6. Fuse block 7. Fuse block/Fusible links 8. Fusible links 9. Battery 10. Engine oil dipstick 11. Radiator cap 12. Power steering fluid reservoir 13. Win ...

    Sunshade motor assembly
    Wiring Diagram ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2021 Copyright www.nimainfo.com
    0.0124