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 170 (CRUISE CONTROL SYSTEMS)DIAGNOSTIC TESTSDTC P1520/52: SHORT IN STOP LIGHT SWITCH CIRCUITDETECTION ITEM & POSSIBLE CAUSES
2004 Toyota Matrix XR, FWD, Standard
Detection Item & Possible Causes
2004 Toyota Matrix XR, FWD, StandardSECTION Detection Item & Possible Causes
WARNING: This page is about a different car, the 2002 Lexus GS 430 and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
DTC detection area is stop light switch circuit. Possible causes are:
- Defective stop light switch.
- Defective wiring harness or connector between ECM and stop light switch circuit.
- Defective ECM.
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.