Terminals Of Ecu

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CHECK TRANSPONDER KEY AMPLIFIER

Fig 1: Identifying I14 Amplifier Connector

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Disconnect the I14 amplifier connector.

Measure the resistance of the wire harness side connector.

Standard:

TERMINAL SPECIFIED CONDITION

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
GND (I14-7) - Body ground	BR-R *1 - Body ground	Ground	Always	Below 1 Ω
GND (I14-7) - Body ground	BR *2 - Body ground	Ground	Always	Below 1 Ω

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

*1: Coupe

*2: Convertible

Reconnect the I14 amplifier connector.
Measure the resistance and voltage of the connector.
Standard:

Fig 2: Waveform 1 Reference Table
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If the result is not as specified, there may be a malfunction on the amplifier.
Inspect using an oscilloscope.
Waveform 1 (Reference):

Fig 3: Waveform 1 Pattern
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Waveform 2 (Reference):

Fig 4: Waveform 2 Pattern
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Fig 5: Identifying Connector Terminal

Fig 6: Waveform Reference Table

CHECK TRANSPONDER KEY ECU ASSY

Fig 7: Connector Terminal Description Table
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1. Disconnect the T5 ECU connector.
2. Measure the voltage and resistance of the wire harness side connector.
  Standard:
  
  Fig 8: Connector Terminal Description Table
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  If the result is not as specified, there may be a malfunction on the wire harness side.
  
  *1: Coupe
  
  *2: Convertible
3. Reconnect the T5 ECU connector.
4. Measure the voltage of the connector.
  Standard:
  
  Fig 9: Waveform Reference Table
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  Fig 10: Waveform 2 Pattern
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  Fig 11: Waveform 1 Pattern
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5. Inspect using an oscilloscope.
  Waveform 1 (Reference):
  
  Fig 12: Waveform Reference Table
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  Waveform 2 (Reference):
  
  Fig 13: Waveform Reference Table
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  Waveform 3 (Reference):
  
  Fig 14: Waveform Reference Table
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  Waveform 4 (Reference):
  
  Fig 15: Waveform Reference Table
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Fig 16: Waveform Pattern (1 Of 2)
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Fig 17: Waveform Pattern (2 Of 2)
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CHECK ECM
1. Disconnect the E5 and E6 ECM connectors.
  
  Fig 18: Disconnecting E5 & E6 ECM Connectors
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2. Measure the voltage and resistance of the wire harness side connectors.
  Standard:
  
  Fig 19: Waveform 1 Reference Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
3. Inspect using an oscilloscope.
  Waveform 1 (Reference):
  
  Fig 20: Waveform 2 Reference Table
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  Waveform 2 (Reference):
  
  Fig 21: Waveform 1 Reference Table
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Fig 22: Waveform 2
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Fig 23: Identifying DLC3 Terminal
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