LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2003 >> LS 430 >> Repair and Diagnosis >> External Pages >> Different car >> Section 422 (Power Window Control System - Diagnostics) >> Terminals Of Ecu
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Terminals Of Ecu

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check Instrument Panel Junction Block Assy (Body ECU) 
    Fig 1: Identifying Instrument Panel Junction Block Terminals
    G02815513Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the voltage or continuity between the terminals of the connectors.

      Standard: 

      Fig 2: Instrument Panel J/B Specifications Table
      G02815514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the result is not as specified, the instrument panel J/B assy (body ECU) malfunctions.

  2. Check Multiplex Network Door ECU Back (Back Door ECU) 
    Fig 3: Identifying Multiplex Network Door ECU Terminals
    G02815515Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check the voltage or continuity between the terminals of the connectors.

      Standard: 

      Fig 4: Multiplex Network Door ECU Specifications Table
      G02815516Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If the result is not as specified, the multiplex network door ECU back (back door ECU) malfunctions.