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.
DTCS Cannot Be Retrieved
On all models except GS300, inspect TRAC OFF indicator light circuit. Repair as needed. See TRAC OFF INDICATOR, TRAC CUT SWITCH CIRCUIT. If TRAC OFF indicator light circuit is okay, inspect Tc terminal circuit. See Tc TERMINAL CIRCUIT. If all preceding tests are okay, replace ABS/TRAC ECU and TRAC ECU.
On GS300, inspect TRAC indicator light circuit. Repair as needed. See TRAC INDICATOR LIGHT CIRCUIT. If TRAC indicator light circuit is okay, inspect Tc terminal circuit. See Tc TERMINAL CIRCUIT. If all preceding tests are okay, replace TRAC ECU.
Use the Manual With the Right Hardware
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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.
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