LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2003 >> LS 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 922 (Multiplex Communication System - Diagnostics) >> Terminals Of Ecu

Terminals Of Ecu

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK DRIVER SIDE JUNCTION BLOCK ASSY (BODY ECU) 
    Fig 1: Identifying Driver Side Junction Block Assy (Body ECU) Connectors
    G02579764Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 1B, 1E, 1F, 1H and 1L J/B connectors.
    2. Check the voltage or continuity of each terminal of the wire harness side connectors.

      Standard:

      Fig 2: Wire Harness Side Connector Terminals Voltage Or Continuity Conditions
      G02579765Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  2. CHECK THEFT WARNING ECU ASSY (THEFT DETERRENT ECU) 
    Fig 3: Identifying T5 ECU Connector
    G02579766Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T5 ECU connector.
    2. Check the voltage or continuity of each terminal of the wire harness side connector.

      Standard:

      Fig 4: Wire Harness Side Connector (T5) Voltage Or Continuity Conditions
      G02579767Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

  3. CHECK MULTIPLEX NETWORK DOOR ECU BACK (BACK DOOR ECU) 
    Fig 5: Identifying B8 ECU Connector
    G02579768Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the B8 ECU connector.
    2. Check the voltage or continuity of each terminal of the wire harness side connector.

      Standard:

      Fig 6: Wire Harness Side Connectors (B8) Voltage Or Continuity Conditions
      G02579769Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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