LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2005 >> LS 430 >> Repair and Diagnosis (Single Page) >> Restraints >> Restraints Control Systems >> Seat Belt Warning System - Diagnostics >> Terminals Of Ecu
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Terminals Of Ecu

  1. CHECK DRIVER SIDE J/B (DRIVER SIDE J/B ECU) 
    Fig 1: Driver Side J/B ECU Terminal Connector
    G03001911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the DA, DG J/B and D5 ECU connectors.
    2. Measure the voltage of the wire harness side connectors.
      TERMINAL DESCRIPTION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (DG-8) - Body ground W-B - Body ground Ground Always Below 1 V
      MPX-IG (DA-1) - GND (DG-8) B-W - W-B Power supply Always 10 to 14V
      GND2 (D5-1) - Body ground W-B - Body ground Ground Always Below 1 V
      MPX-B (D5-5) - GND2 (D5-1) R-B - W-B Power supply Always 10 to 14V

      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 the connectors.

      Standard: 

      If the result is not as specified, the seat belt buckle switch or the driver side J/B ECU may have a malfunction.

      Fig 2: Measuring Voltage Of The Connectors
      G03001912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About LEMON Manuals