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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 299 (Sonar System (Circuit Diagnosis)) >> Circuit Diagnosis >> Sonar System Off Switch Circuit Inspection >> Circuit Diagnosis Procedure

Circuit Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

The sonar system can be disabled by momentarily pressing the sonar system OFF switch. The sonar system OFF indicator lamp will be illuminated when the sonar system is OFF. Enabling the sonar system will cause the sonar system OFF indicator to go out. The indicator will flash if a malfunction exists in the system.

  1. CHECK SONAR SYSTEM OFF SWITCH 

    Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Replace sonar system OFF switch. Refer to Removal and Installation .

  2. CHECK SONAR SYSTEM OFF SWITCH CIRCUITS 
    1. Turn ignition switch OFF.
    2. Disconnect sonar control unit connector and sonar system OFF switch connector.
    3. Check continuity between sonar control unit harness connector and sonar system OFF switch harness connector.

      Connector

      Terminal

      Connector

      Terminal

      Continuity

      M115

      2

      M116

      1

      Yes

      13

      5

      11

      6

    4. Check continuity between sonar system OFF switch harness connector and ground.

      Connector

      Terminal

      Continuity

      M116

      1, 5, 6

      Ground

      No

      3

      Yes

    Is the inspection result normal?

    YES

    Inspection End.

    NO

    Repair harness or connector.