Terminals Of Ecu

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DRIVER SEAT ECU

Fig 1: Identifying Driver Seat ECU Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the D27 and D28 ECU connectors.
2. Measure the voltage of each terminal of the wire harness side connectors.
  Standard:
  
  Fig 2: Driver Seat ECU Terminals Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
3. Reconnect the D27 and D28 ECU connectors.
4. Initialize the front power seat (see INITIALIZATION ).
5. Measure the voltage of each terminal of connectors.
  Standard:
  
  Fig 3: Driver Seat ECU Terminals Reference Chart (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 4: Driver Seat ECU Terminals Reference Chart (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  HINT:
  
  *: w/ Climate control seat system
  
  If the result is not as specified, replace the power seat or the ECU may be malfunctioning.
CHECK DRIVER DOOR ECU

Fig 5: Identifying Driver Door ECU Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the D25 ECU connector.
2. Measure the voltage of each terminal of the wire harness side connector.
  Standard:
  
  Fig 6: Driver Door ECU Terminals Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
3. Reconnect the D25 ECU connector.
4. Measure the voltage of each terminal of the D24 ECU connector.
  Standard:
  
  Fig 7: Driver Door ECU Terminals Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the driver door ECU may be malfunctioning.