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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 599 (LIGHTING SYSTEM - DIAGNOSIS)INTERIOR LIGHT 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 OBD II SCAN TOOL OR LEXUS HAND-HELD TESTER 
    1. Connect the LEXUS hand-held tester to the DLC3.
    2. Check that the illumination can light in an ACTIVE TEST.

    Driver Side J/B ECU: 

    DRIVER SIDE J/B ECU INSPECTION

    Description (Symbols) Tester display Check condition
    Illumination signal output ILLUMI OUTPUT ON - OFF

    Passenger Side J/B ECU: 

    PASSENGER SIDE J/B ECU INSPECTION

    Description (Symbols) Tester display Check condition
    Front room light
    (Front step light)    		 F ROOM LIGHT ON - OFF
    1. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOM TABLE, SEE  PROBLEM SYMPTOMS TABLE  . 
    2. NG: GO TO NEXT STEP. 
  2. INSPECT INTERIOR LIGHT, see  INSPECTION  . 
    1. NG: REPLACE INTERIOR LIGHT 
    2. OK: GO TO NEXT STEP. 
  3. CHECK HARNESS AND CONNECTOR 
    1. Inspect the harness and connectors related to each light, referring to the wiring diagram.
    1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
    2. OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOM TABLE, SEE  PROBLEM SYMPTOMS TABLE  . 
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.