2005 Lexus ES 330FACTORY OEM SERVICE PROCEDURE

Terminals Of Ecu

  1. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSY (DRIVER'S DOOR ECU) 
    Fig 1: Locating D17 Connector
    G02938641Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D17 connector.
    2. Check the voltage and continuity of each terminal of the wire harness side connector.

      Standard: 

      Fig 2: Terminal Wiring Color Specified Condition Table
      G02938642Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      If the value is not as specified, there may be a malfunction in the wire harness side.

    3. Connect the D17 connector, and check the voltage between each terminal of the connector.

    Standard: 

    Fig 3: Terminal Wiring Color Specified Condition Table
    G02938643Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    If the value is not as specified, replace the power window regulator master switch.

  2. CHECK POWER WINDOW REGULATOR SWITCH ASSY (PASSENGER'S DOOR ECU) 
    Fig 4: Identifying F13 Connector
    G02938644Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F13 connector.
    2. Check the voltage and continuity of each terminal of the wire harness side connector.

      Standard: 

      Fig 5: Terminal Wiring Color Specified Condition Table
      G02938645Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      If the value is not as specified, there may be a malfunction in the wire harness side.

    3. Connect the F13 connector, and check the voltage between each terminal of the connector.

    Standard: 

    Fig 6: Terminal Wiring Color Specified Condition Table
    G02938646Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    If the value is not as specified, replace the power window regulator switch.

  3. CHECK POWER WINDOW REGULATOR SWITCH ASSY REAR (LH SIDE) 
    Fig 7: Identifying R15 Connector
    G02938647Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the R15 connector.
    2. Check the voltage and continuity of each terminal of the wire harness side connector.

      Standard: 

      Fig 8: Terminal Wiring Color Specified Condition Table
      G02938648Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      If the value is not as specified, there may be a malfunction in the wire harness side.

    3. Connect the R15 connector, and check the voltage between each terminal of the connector.

    Standard: 

    Fig 9: Terminal Wiring Color Specified Condition Table
    G02938649Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    If the value is not as specified, replace the power window regulator switch assy rear (LH side).

  4. CHECK POWER WINDOW REGULATOR SWITCH ASSY REAR (RH SIDE) 
    1. Disconnect the R16 connector.
    2. Check the voltage and continuity of each terminal of the wire harness side connector.
      Fig 10: Identifying R16 Connector
      G02938650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 11: Terminal Wiring Color Specified Condition Table
      G02938651Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      If the value is not as specified, there may be a malfunction in the wire harness side.

    3. Connect the R16 connector, and check the voltage between each terminal of the connector.

    Standard: 

    Fig 12: Terminal Wiring Color Specified Condition Table
    G02938652Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    HINT:

    If the value is not as specified, replace the power window regulator switch assy rear (RH side).

  5. CHECK DRIVER SIDE JUNCTION BLOCK ASSY (BODY ECU) (REAR SIDE) 
    Fig 13: Checking Driver Side Junction Block Assy (Rear Side)
    G02938653Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 2B, 2E, 2F and 2G driver side J/B connectors.
    2. Check the voltage and continuity of each terminal of the wire harness side connector.

    Standard: 

    TERMINAL WIRING COLOR SPECIFIED CONDITION

    Symbols (Terminal No.) Wiring color Condition Specified condition
    B <=> Body ground (2F-7 <=> Body ground) R <=> Body ground Constant 10 - 14 V
    BDR1 <=> Body ground (2G-14 <=> Body ground) L-W <=> Body ground Constant 10 - 14V
    BDR2 <=> Body ground (2E-1 <=> Body ground) B-G <=> Body ground Constant 10 - 14V
    SGND <=> Body ground (2B-11 <=> Body ground) BR <=> Body ground Constant Continuity
    GND <=> Body ground (2R-8 <=> Body ground) W-B <=> Body ground Constant Continuity

    HINT:

    If the value is not as specified, there may be a malfunction in the wire harness side.

  6. CHECK DRIVER SIDE JUNCTION BLOCK ASSY (BODY ECU) (LEFT SIDE) 
    Fig 14: Checking Driver Side Junction Block Assy (Left Side)
    G02938654Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the B4 driver side J/B (body ECU) connector.
    2. Check the continuity of each terminal of the wire harness side connector.

      Standard: 

      TERMINAL WIRING COLOR SPECIFIED CONDITION

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

      HINT:

      If the value is not as specified, there may be a malfunction in the wire harness side.

    3. Connect the B4 driver side J/B (body ECU) connector, and check the voltage between each terminal of the connector.

    Standard: 

    TERMINAL WIRING COLOR SPECIFIED CONDITION

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

    HINT:

    If the value is not as specified, replace the driver side J/B.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.