Terminals Of Ecu

CHECK TRANSPONDER KEY ECU ASSY

Fig 1: Identifying Terminals Of T9 ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the T9 ECU connector.
2. Measure the voltage and resistance between each terminal of the wire harness side connector.
  Standard:
  
  Fig 2: T9 ECU Connector Terminals - Specified Condition
  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 T9 ECU connector. Measure the voltage between each terminal of the connector.
  Standard:
  
  Fig 3: T9 ECU Connector Terminals - Specified Condition
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the ECU may have a malfunction.
CHECK STEERING LOCK ECU

Fig 4: Identifying Terminals Of Steering Lock ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the S46 ECU connector.
2. Measure the voltage and resistance of each terminal of the wire harness side connector.
  Standard:
  
  Fig 5: Steering Lock ECU Connector Terminals - Specified Condition
  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 S46 ECU connector.
4. Measure the voltage between each terminal of the connector.
  Standard:
  
  Fig 6: Steering Lock ECU Connector Terminals - Specified Condition
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the ECU may have a malfunction.
CHECK DRIVER DOOR ECU

Fig 7: Identifying Terminals Of Driver Door ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the D25 ECU connector.
2. Measure the voltage and resistance of each terminal of the wire harness side connector.
  Standard:
  
  Fig 8: Driver Door ECU Terminals - Specified Condition
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.