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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 ADP 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

      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 B37 and B200.
    2. Check the continuity between the harness connectors.
      Harness connector Harness connector Continuity
      Connector No. Terminal No. Connector No. Terminal No.
      B40 24 B37 15 Existed
      23 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 driver seat control unit.

      NO: Repair the main line between the harness connectors B40 and B37.

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