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Home >> Nissan-Datsun >> 2002 >> Sentra SE-R, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2144 (LAN System) >> Can >> DTC/Circuit Diagnosis >> Main Line Between TCM And DLC Circuit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2011 Nissan Xterra. 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 F14
      • Harness connector E5
      • Harness connector E152
      • Harness connector M31

      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.
      • A/T assembly
      • Harness connectors F14 and E5
    2. Check the continuity between the A/T assembly harness connector and the harness connector.
      CONTINUITY REFERENCE CHART

      A/T assembly harness connector Harness connector Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      F9 3 F14 2 Existed
      8 3 Existed

      Is the inspection result normal? 

      YES: GO TO 3.

      NO: Repair the main line between the A/T assembly and the harness connector F14.

  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
    1. Disconnect the harness connectors E152 and M31.
    2. Check the continuity between the harness connectors.
      CONTINUITY REFERENCE CHART

      Harness connector Harness connector Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      E5 2 E152 52G Existed
      3 51G Existed

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Repair the main line between the harness connectors E5 and E152.

  4. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

    Check the continuity between the harness connector and the data link connector.

    CONTINUITY REFERENCE CHART

    Harness connector Data link connector Continuity
    Connector No. Terminal No. Connector No. Terminal No.
    M31 52G M22 6 Existed
    51G 14 Existed

    Is the inspection result normal? 

    YES (Present error): Check the following items again.

    • Decision of CAN system type.
    • Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR ("ECU list" included)].
    • Procedure for detecting root cause.

    YES (Past error): Error was detected in the main line between the TCM and the data link connector.

    NO: Repair the main line between the harness connector M31 and the data link connector.

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