Terminals Of Ecu

WARNING: This page is about a different car, the 2004 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSY (BODY ECU)

Fig 1: Identifying Instrument Panel Junction Block Assy Terminals Of ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the B6 J/B connector.
2. Disconnect the IB, IC, ID, IE and IH J/B connectors.
3. Check the voltage or continuity of each terminal of the wire harness side connectors.
  
  Fig 2: Standard
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
4. Reconnect the B6 J/B connector.
5. Reconnect the IB, IC, ID, IE and IH J/B connectors.
6. Check the voltage of each terminal of the connectors.
Fig 3: Standard
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, the J/B assy (body ECU) may have a malfunction.