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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 175 (Rear Final Drive: Ma241 (Eld)) >> Rear Final Drive: Ma241 (Eld) >> DTC/Circuit Diagnosis >> DTC P1844: Relay >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK POWER SUPPLY AND GROUND CIRCUIT 

    Perform the trouble diagnosis of the power supply and ground circuit. Refer to Diagnosis Procedure .

    Is the inspection result normal?

    YES

    GO TO STEP 2  .

    NO

    Repair or replace the malfunctioning parts.

  2. CHECK TERMINALS AND HARNESS CONNECTORS 

    Check differential lock control unit pin terminals for damage or loose connection with harness connector.

    Is the inspection result normal?

    YES

    Replace differential lock control unit. Refer to Removal and Installation .

    NO

    Repair or replace the malfunctioning parts.

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