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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 536 (Interior Lighting System (Circuit Diagnosis)) >> Circuit Diagnosis >> Battery Saver Output/Power Supply Circuit >> DTC Diagnosis Procedure >> Cargo Van

Cargo Van

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BATTERY SAVER OUTPUT/POWER SUPPLY CIRCUIT 
    1. Turn ignition switch ON.
    2. Check voltage between BCM harness connector M20 terminal 56 and ground.

    (+)

    (-)

    Voltage (V) (Approx.)

    Connector

    Terminal

    M20

    56

    Ground

    Battery voltage

    Is the inspection result normal?

    YES

    GO TO 2

    NO

    Replace BCM after making sure battery saver output/power supply circuit is not shorted to ground. Refer to Removal and Installation .

  2. CHECK BATTERY SAVER OUTPUT/POWER SUPPLY OPEN CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect the following harness connectors.
      • BCM M20
      • Front room/map lamp assembly R25
      • Front cargo lamp R26 (if equipped)
      • Center cargo lamp R27 (if equipped)
      • Rear cargo lamp R28
    3. Check continuity between BCM harness connector M20 terminal 56 and each interior room lamp harness connector terminal 1.

    BCM

    Each interior room lamp

    Continuity

    Connector

    Terminal

    Connector

    Terminal

    M20

    56

    Front room/map lamp assembly

    R25

    1

    Yes

    Front cargo lamp

    R26

    1

    Center cargo lamp

    R27

    1

    Rear cargo lamp

    R28

    1

    Is the inspection result normal?

    YES

    GO TO 3

    NO

    Repair the harness or connectors.

  3. CHECK BATTERY SAVER OUTPUT/POWER SUPPLY SHORT CIRCUIT 

    Check continuity between BCM harness connector M20 terminal 56 and ground.

    Connector

    Terminal

    --

    Continuity

    M20

    56

    Ground

    No

    Is the inspection result normal?

    YES

    Check that each interior room lamp has no internal short circuit.

    NO

    Repair the harness or connectors.