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Nissan Sentra B18 (2020-2025) Service Manual: Main Line Between Icc 2 and Rdr-L Circuit

Diagnosis Procedure

Diagnosis Procedure

  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 connectors M8

      • Harness connectors B8

      • Harness connectors B94

      • Harness connectors B85

    Is the inspection result normal?

    YES >>

    GO TO 2.

    NO >>

    Repair the terminal and connector.

  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

    1. Disconnect the following harness connectors.

      • ADAS control unit 2

      • Harness connectors M8 and B8

    2. Check the continuity between the ADAS control unit 2 harness connector and the harness connector.

      ADAS control unit 2 harness connector

      Harness connector

      Continuity

      Connector No.

      Terminal No.

      Connector No.

      Terminal No.

      M148

      18

      M8

      2

      Existed

      6

      18

      Existed

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair the main line between the ADAS control unit 2 and the harness connector M8.

  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

    1. Disconnect the harness connectors B94 and B85.

    2. Check the continuity between the harness connectors.

      Harness connector

      Harness connector

      Continuity

      Connector No.

      Terminal No.

      Connector No.

      Terminal No.

      B8

      2

      B94

      12

      Existed

      18

      11

      Existed

    Is the inspection result normal?

    YES >>

    GO TO 4.

    NO >>

    Replace the body harness (RH side).

  4. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

    1. Disconnect the harness connectors B29 and B250.

    2. Check the continuity between the harness connectors.

      Harness connector

      Harness connector

      Continuity

      Connector No.

      Terminal No.

      Connector No.

      Terminal No.

      B85

      12

      B29

      6

      Existed

      11

      7

      Existed

    Is the inspection result normal?

    YES (Present error) >>

    Check CAN system type decision again.

    YES (Past error) >>

    Error was detected in the main line between the ADAS control unit 2 and the side radar LH.

    NO >>

    Repair the main line between the harness connector B85 and the side radar LH.

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