Terminals Of Ecu

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Check Transponder Key Amplifier

Fig 1: Identifying Transponder Key Amplifier Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the I17 amplifier connector, and check the continuity of each terminal of the wire harness side connector.
  Standard:
  
  Fig 2: Connector I17 Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
2. Reconnect the I17 amplifier connector, and check the continuity or voltage of each terminal of the connector.
  Standard:
  
  Fig 3: Connector I17 Terminal Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the amplifier may malfunction.
3. Inspect using an oscilloscope.
  
  Fig 4: I17 Amplifier Connector Waveform
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Waveform 1 (Reference):
  
  Fig 5: I17 Amplifier Connector Waveform Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Waveform 2 (Reference):
  
  Fig 6: I17 Amplifier Connector Waveform 2 Reference Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 7: I17 Amplifier Connector Waveform 2 Graph
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Check Transponder Key ECU Assy

Fig 8: Identifying Transponder Key ECU Assy Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the T8 ECU connector, and check the voltage or continuity between each terminal of the wire harness side connector.
  Standard:
  
  Fig 9: T8 ECU Connector Specifications Table (1 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
2. Reconnect the T8 ECU connector, and check the voltage between each terminal of the connector.
  Standard:
  
  Fig 10: T8 ECU Connector Specifications Table (2 Of 2)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Inspect using an oscilloscope.
  Waveform 1 (Reference):
  
  Fig 11: T8 ECU Connector Waveform 1 Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 12: T8 ECU Connector Waveform 1
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Waveform 2 (Reference):
  
  Fig 13: T8 ECU Connector Waveform 2 Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 14: T8 ECU Connector Waveform 2
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Waveform 3 (Reference):
  
  Fig 15: T8 ECU Connector Waveform 3 Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 16: T8 ECU Connector Waveform 3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Waveform 4 (Reference):
  
  Fig 17: T8 ECU Connector Waveform 4 Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 18: T8 ECU Connector Waveform 4
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the T8 ECU may malfunction.
Check ECM

Fig 19: Identifying ECM Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the E6, E7 and E8 ECU connectors, and check the voltage or continuity between each terminal of the wire harness side connectors.
  Standard:
  
  Fig 20: Wire Harness Side Connectors Voltage Or Continuity Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Inspect using an oscilloscope.
  Waveform 1 (Reference):
  
  Fig 21: E6, E7 & E8 ECU Connector Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 22: ECU Connectors Waveform 1
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Waveform 2 (Reference):
  
  Fig 23: E6, E7 & E8 ECU Connectors Specifications Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Fig 24: ECU Connectors Waveform 2
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.