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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 603 (KEY REMINDER WARNING SYSTEM - DIAGNOSIS)DOOR COURTESY SWITCH ASSEMBLY (FOR FRONT DOOR) CIRCUITINSPECTION PROCEDURE
2004 Toyota Matrix XR, FWD, Standard

Inspection Procedure

2004 Toyota Matrix XR, FWD, StandardSECTION Inspection Procedure
WARNING: This page is about a different car, the 2002 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. DO ACTIVE TEST OF LEXUS HAND-HELD TESTER 
    1. ACTIVE TEST
      1. Make a judgement of good or bad and find out a malfunctioning part by the active test.

    METER ECU 

    Standard: 

    STANDARD

    Item Operation
    KEY REMND BUZZER ON/OFF
    1. NG: GO TO INSTRUMENT PANEL/METER SECTION, see  INSTRUMENT PANEL  . 
    2. OK: GO TO NEXT STEP 
  2. CHECK COURTESY LAMP 
    1. Make the map light assembly switch in the door position and open the driver's door courtesy light come on.
    1. OK: CHECK AND REPLACE THEFT WARNING ECU ASSEMBLY 
    2. NG: GO TO NEXT STEP 
  3. READ VALUE OF LEXUS HAND-HELD TESTER 
    1. ECU DATA MONITOR
      1. Perform a data monitor of the data monitor.

      Standard: 

    DRIVER DOOR ECU (SWITCH CONDITION) 

    SPECIFIED CONDITION

    Item Condition Specified condition
    COURTESY SWITCH Door opened/Closed ON/OFF
    1. OK: CHECK AND REPLACE THEFT WARNING ECU ASSEMBLY 
    2. NG: GO TO NEXT STEP 
  4. INSPECT FRONT DOOR COURTESY LAMP SWITCH ASSEMBLY 
    1. Check the continuity between terminal 1 and the body ground.

      Standard: 

    SPECIFIED CONDITION

    Terminal Condition Specified condition
    1 <=> Body ground Shaft not pushed in Continuity
    1 <=> Body ground Shaft pushed in No continuity
    Fig 1: Inspecting Front Door Courtesy Lamp Switch Assembly
    G03387033Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPLACE FRONT DOOR COURTESY LAMP SWITCH ASSEMBLY 
    2. OK: GO TO NEXT STEP 
  5. CHECK AND REPLACE WIRE HARNESS (DOOR ECU - COURTESY LAMP SWITCH) 
    1. Disconnect the driver's door ECU and courtesy lamp switch connectors.
    2. Check the continuity between driver's door ECU vehicles side connector and courtesy lamp switch vehicles side connector. See TERMINALS OF ECU .

      Standard: 

    SPECIFIED CONDITION

    Terminals (ECU - Switch) Specified condition
    D17-27 <=> D8-1 (CTY <=> Courtesy switch) Continuity
    Fig 2: Disconnecting Driver'S Door ECU And Courtesy Lamp Switch Connectors
    G03387034Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. NG: REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 
    2. OK: CHECK AND REPLACE MULTIPLEX NETWORK DOOR ECU FRONT LH 
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.