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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 49 (Can System) >> Can >> DTC/Circuit Diagnosis >> Main Line Between RDR-L And Laser Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK CONNECTOR 
    1. Turn the ignition switch OFF.
    2. Disconnect the battery cable from the negative terminal.
    3. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side).
      • Harness connector B1
      • Harness connector M6
      • Harness connector M1
      • Harness connector E30
      • Harness connector E2
      • Harness connector E202

    Is the inspection result normal?

    YES

    GO TO 2 .

    NO

    Repair the terminal and connector.

  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 
    1. Disconnect the connector of side radar LH.
    2. Check the continuity between the harness connector and the side radar LH harness connector.

      Side radar LH harness connector

      Harness connector

      Continuity

      Connector No.

      Terminal No.

      Connector No.

      Terminal No.

      B77

      6

      B1

      38J

      Existed

      7

      37J

      Existed

    Is the inspection result normal?

    YES

    GO TO 3 .

    NO

    Repair the main line between the harness connector B1 and the side radar LH.

  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 
    1. Disconnect the harness connector B1 and M6.
    2. Check the continuity between the harness connectors.

      Harness connector

      Harness connector

      Continuity

      Connector No.

      Terminal No.

      Connector No.

      Terminal No.

      M6

      38J

      M1

      58G

      Existed

      37J

      59G

      Existed

    Is the inspection result normal?

    YES

    GO TO 4 .

    NO

    Repair the main line between the harness connector M6 and M1.

  4. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 
    1. Disconnect the harness connector M1 and E30.
    2. Check the continuity between the harness connectors.

      Harness connector

      Harness connector

      Continuity

      Connector No.

      Terminal No.

      Connector No.

      Terminal No.

      E30

      58G

      E2

      21

      Existed

      59G

      20

      Existed

    Is the inspection result normal?

    YES

    GO TO 5 .

    NO

    Repair the main line between the harness connector E30 and E2.

  5. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 
    1. Disconnect the harness connector E2 and E202.
    2. Check the continuity between the harness connectors.

      Harness connector

      Continuity

      Connector No.

      Terminal No.

      Terminal No.

      E202

      21

      23

      Existed

      20

      22

      Existed

    Is the inspection result normal?

    YES

    Check CAN system type decision again.

    YES

    Error was detected in the main line between the side radar LH and the ICC sensor.

    NO

    Repair the main line between the harness connector E202 and the ICC sensor.