Terminals Of Ecu

CHECK DRIVER SIDE J/B ECU

Fig 1: Identifying Connector Terminal Of (Driver Side J/B ECU)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the DA, DG, J/B and D5 ECU connectors.
2. Measure the voltage of each terminal of the wire harness side connectors.
  Standard:
  
  Fig 2: Voltage 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 DA, DG J/B and D5 ECU connectors.
4. Measure the voltage of each terminal of the connectors.
  Standard:
  
  Fig 3: Voltage Reference Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the seat belt buckle switch or the driver side J/B ECU may be malfunctioning.