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Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 892 (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 2013 Nissan Armada. 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 E34
      • Harness connector B40
      • Harness connector B69
      • Harness connector M40

      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.
      A/T assembly harness connector Harness connector Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      F9 3 F14 5 Existed
      8 15 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 E34 and B40.
    2. Check the continuity between the harness connectors.
      Harness connector Harness connector Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      E5 5 E34 24 Existed
      15 23 Existed

      Is the inspection result normal? 

      YES: GO TO 4.

      NO: Repair the main line between the harness connectors E5 and E34.

  4. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 
    1. Disconnect the harness connectors B69 and M40.
    2. Check the continuity between the harness connectors.
      Harness connector Harness connector Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      B40 24 B69 11J Existed
      23 22J Existed

      Is the inspection result normal? 

      YES: GO TO 5.

      NO: Repair the main line between the harness connectors B40 and B69.

  5. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) 

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

    Harness connector Data link connector Continuity
    Connector No. Terminal No. Connector No. Terminal No.
    M40 11J M22 6 Existed
    22J 14 Existed

    Is the inspection result normal? 

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

    • Decision of CAN system type.
    • Not received CONSULT data (SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR).
    • 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 M40 and the data link connector.

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