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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 545 (Can System (DTC/Circuit Diagnosis)) >> Circuit Diagnosis >> A-Bag Branch Line Circuit >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

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.
WARNING:
  • Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more. (To discharge backup capacitor.)
  • Never use unspecified tester or other measuring device.
  1. CHECK CONNECTOR 
    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose connection (unit side and connector side).

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Replace the main harness.

  2. CHECK AIR BAG DIAGNOSIS SENSOR UNIT 

    Check the air bag diagnosis sensor unit. Refer to Work Flow .

    Is the inspection result normal?

    YES

    Replace the main harness.

    NO

    Replace parts whose air bag system has a malfunction.

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