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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Interior Lighting System (Circuit Diagnosis)) >> Circuit Diagnosis >> Interior Room Lamp Power Supply Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK INTERIOR ROOM LAMP POWER SUPPLY OUTPUT 

    SYMBOL CONSULT

    1. Turn ignition switch OFF.
    2. Disconnect the following connectors:
      • Personal lamps rear
      • Front room/map lamp assembly
      • Trunk room lamp
      • Foot lamps
      • Front step lamps
      • Vanity mirror lamps
    3. Turn ignition switch ON.
    4. Select "BATTERY SAVER" in "Active Test" mode of "BCM".
    5. While operating the test item, check voltage between BCM harness connector and ground.

    BCM

    (-)

    Test item

    Voltage

    (Approx.)

    (+)

    Connector

    Terminal

    M17

    137

    Ground

    BATTERY SAVER

    On

    0V

    Off

    Battery voltage

    Is the inspection result normal?

    YES

    GO TO 2 .

    NO

    Replace BCM. Refer to Removal and Installation .

  2. CHECK INTERIOR ROOM LAMP POWER SUPPLY OPEN CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect the BCM connector.
    3. Check continuity between BCM harness connector and each interior room lamp harness connector.

    BCM

    Each interior room lamp

    Continuity

    Connector

    Terminal

    Connector

    Terminal

    M17

    137

    Front room/map lamp assembly

    R8

    1

    Yes

    Trunk room lamp

    B36

    Foot lamp LH

    M99

    Foot lamp RH

    M100

    Front step lamp LH

    D11

    Front step lamp RH

    D109

    Vanity mirror lamp LH

    R3

    2

    Vanity mirror lamp RH

    R9

    Personal lamp rear LH

    R12

    4

    Personal lamp rear RH

    R11

    Is the inspection result normal?

    YES

    Check intermittent incident. Refer to Intermittent Incident .

    NO

    Repair or replace harnesses.