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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 476 (Engine Control System (DTC/Circuit Diagnosis) (3 Of 3)) >> DTC/Circuit Diagnosis >> Electrical Load Signal >> Component Function Check

Component Function Check

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 REAR WINDOW DEFOGGER SWITCH FUNCTION 

    SYMBOL With CONSULT

    1. Turn ignition switch ON.
    2. Select "DATA MONITOR" mode of "ENGINE" using CONSULT.
    3. Select "LOAD SIGNAL" and check indication as per the following conditions.

      Monitor item

      Condition

      Indication

      LOAD SIGNAL

      Rear window defogger switch

      ON

      ON

      OFF

      OFF

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Proceed to Diagnosis Procedure .

  2. CHECK LIGHTING SWITCH FUNCTION 

    SYMBOL With CONSULT

    Check "LOAD SIGNAL" indication as per the following conditions.

    Monitor item

    Condition

    Indication

    LOAD SIGNAL

    Lighting switch

    ON at 2nd position

    ON

    OFF

    OFF

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    Proceed to Diagnosis Procedure .

  3. CHECK HEATER FAN CONTROL SWITCH FUNCTION 

    SYMBOL With CONSULT

    Select "HEATER FAN SW" and check indication as per the following conditions.

    Monitor item

    Condition

    Indication

    HEATER FAN SW

    Heater fan control switch

    ON

    ON

    OFF

    OFF

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Proceed to Diagnosis Procedure .