FixVault
Home › Lexus › 2006 › ES 330 › Repair and Diagnosis › Body & Frame › Door Locks › Key Unlock Warning System - Diagnostics › Terminals Of Ecu

Terminals Of Ecu

  1. CHECK DRIVER SIDE JUNCTION BLOCK ASSY (BODY ECU) (LEFT SIDE) 
    Fig 1: Identifying ECU Terminals
    G02938789Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the B4 body ECU connector and check the continuity of terminal of the disconnected connector.
      1. Standard: 
      TERMINALS CONDITION

      Symbols (Terminal No.) Wiring color Condition Specified condition
      KSW <=> Body ground (B4-19) <=> (Body ground) L <=> Body ground No key in ignition switch lock cylinder --> Yes No continuity --> Continuity

      HINT:

      If the result is not as specified, the vehicle's side may malfunction.

    2. Reconnect the B4 connector, and check the voltage of the wire harness side connector.
      1. Standard: 
      TERMINALS CONDITION

      Symbols (Terminal No.) Wiring color Condition Specified condition
      DCTY <=> Body ground (B6-1) <=> (Body ground) R-G <=> Body ground Driver's door fully closed --> Opened 10-14V --> 0V

      HINT:

      If the result is not as specified, the body ECU may malfunction.

  2. CHECK DRIVER SIDE JUNCTION BLOCK ASSY (BODY ECU) (REAR SIDE) 
    Fig 2: Identifying Driver Side Junction Block Assy (Body ECU)
    G02938790Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 2B, 2E and 2F driver side J/B connectors.
    2. Check the voltage and continuity of each terminal of the wire harness side connectors.
      1. Standard: 
      TERMINALS CONDITION

      Symbols (Terminal No.) Wiring color Condition Specified condition
      SIG <=> Body ground (2E-2) <=> (Body ground) B-G <=> Body ground Turn ignition switch OFF --> ON 0V --> 10 - 14 V
      B <=> Body ground (2F-7) <=> (Body ground) R <=> Body ground Constant 10 - 14 V
      SGND <=> Body ground (2B-11) <=> (Body ground) BR <=> Body ground Constant Continuity

      HINT:

      If the result is not as specified, the vehicle's side may malfunction.

    3. Reconnect the 2B, 2E and 2F driver side J/B connectors.
    4. Check the voltage and continuity of each terminal of the wire harness side connectors.
      1. Standard: 
      TERMINALS CONDITION

      Symbols (Terminal No.) Wiring color Condition Specified condition
      ACC <=> Body ground (2A-2) <=> (Body ground) W <=> Body ground Turn ignition switch OFF --> ON 0V --> 10 - 14 V
      GND <=> Body ground (2R-8) <=> (Body ground) W-B <=> Body ground Constant Continuity

      HINT:

      If the result is not as specified, the driver side J/B (body ECU) may malfunction.

About FixVault