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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 180 (Can System) >> Can >> DTC/Circuit Diagnosis >> Main Line Between M&A And HVAC Circuit >> 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 HARNESS CONTINUITY (OPEN CIRCUIT) 
    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Disconnect the following harness connectors.
      • ECM
      • Combination meter
      • Front air control (with manual air conditioning system)
      • A/C auto amp. (with automatic air conditioning system)
    4. Check the continuity between the combination meter harness connector and the front air control or the A/C auto amp. harness connector.
      • With type A (with manual air conditioning system)

        Combination meter harness connector

        Front air control harness connector

        Continuity

        Connector No.

        Terminal No.

        Connector No.

        Terminal No.

        M25

        46

        M132

        1

        Existed

        45

        17

        Existed

      • With type A (with automatic air conditioning system)

        Combination meter harness connector

        A/C auto amp. harness connector

        Continuity

        Connector No.

        Terminal No.

        Connector No.

        Terminal No.

        M25

        46

        M137

        1

        Existed

        45

        21

        Existed

      • With type B

        Combination meter harness connector

        Front air control harness connector

        Continuity

        Connector No.

        Terminal No.

        Connector No.

        Terminal No.

        M163

        34

        M132

        1

        Existed

        35

        17

        Existed

    NOTE: Check the combination meter type to confirm the service information. Refer to Information .

    Is the inspection result normal?

    YES

    Check CAN system type decision again.

    YES

    Error was detected in the main line between the combination meter and the front air control or the A/C auto amp.

    NO

    Repair the main line between the combination meter and the front air control or the A/C auto amp.