Terminals Of Ecu

WARNING: This page is about a different car, the 2004 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.

CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY (BODY ECU) (LEFT SIDE)

Fig 1: Identifying Instrument Panel Junction Block Assy Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the B6 body ECU connector, and check the continuity of each terminal of the wire harness side connector.
  Standard:
  
  Fig 2: Terminal Continuity Specifications Chart
  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 B6 body ECU connector, and check the voltage of each terminal of the connectors.
  Standard:
  
  Fig 3: Terminal Voltage Specifications Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the body ECU may be defective.
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY (BODY ECU) (REAR SIDE)

Fig 4: Identifying Instrument Panel Junction Block Assy Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the 2B, 2F and 2G instrument panel J/B connectors, and check the continuity and voltage of each terminal of the disconnected connector.
  Standard:
  
  Fig 5: Terminal Voltage & Continuity Specifications Chart
  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 2B, 2F and 2G instrument panel J/B connectors, and check the voltage of each terminal of the connectors.
  Standard:
  
  Fig 6: Terminal Voltage Specifications Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the vehicle may be defective. In this case, check the harness, connector and fuse between the ECU and battery. Then repair or replace it if necessary.