Terminals Of Ecu

CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY (BODY ECU)

Fig 1: Checking Instrument Panel Junction Block Assy (Body ECU)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the IB, IE, IH, IK, IL, B3 and B5 J/B connectors, and check the voltage or continuity of each terminal of the wire harness side connectors.
  Standard:
  
  Fig 2: Instrument Panel Junction Block Assy (Body ECU) (Disconnected)
  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 connectors, and check the voltage of each terminal of the connectors.
  Standard:
  
  Fig 3: Instrument Panel Junction Block Assy (Body ECU) (Reconnected)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction. In this case, check the harness, connector and fuse between the instrument panel junction block assy and battery. Then repair or replace it if necessary.