Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 599 (LIGHTING SYSTEM - DIAGNOSIS)LIGHT CONTROL SWITCH 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.
- READ VALUE OF OBD II SCAN TOOL OR LEXUS HAND-HELD TESTER
- Connect the LEXUS hand-held tester to the DLC3.
- Check the light control switch using DATA LIST
OK:
Light control switch:
LIGHT CONTROL SWITCH INSPECTIONSwitch name (Tester display) No pressing Pressing Light control switch TAIL (TAIL LIGHT SW) OFF ON Light control switch HEAD (HEAD LIGHT SW) OFF ON Light control switch AUTO (LIGHT AUTO SW) OFF ON Fog light switch:
FOG LIGHT SWITCH INSPECTIONSwitch name (Tester display) No pressing Pressing Front fog light switch (F FOG LIGHT SW) OFF ON Headlight dimmer switch:
HEADLIGHT DIMMER SWITCH INSPECTIONSwitch name (Tester display) No pressing Pressing Light control switch Flash (PASSING SW) OFF ON Light control switch HI (DIMMER HI SW) OFF ON Turn signal and hazard warning switch:
TURN SIGNAL AND HAZARD WARNING SWITCH INSPECTIONSwitch name (Tester display) No pressing Pressing Turn signal switch Left (TURN LEFT SW) OFF ON Turn signal switch Right (TURN RIGHT SW) OFF ON - OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOM TABLE, SEE PROBLEM SYMPTOMS TABLE .
- NG: REPLACE TURN SIGNAL SWITCH ASSEMBLY
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.