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.
Diagnostic trouble code (DTC) information
Condition
The stop lamp switch supplies the ABS control module with data during braking and disengages any TRACS control. The control module terminal is grounded via the stop lamp bulbs when the stop lamp switch is not activated. The control module and stop lamps are supplied with battery voltage supply when the stop lamp switch is activated.
Diagnostic trouble code (DTC) ABS-0064 is stored and the function for TRACS is disabled if the control module registers that the signal from the stop lamp switch is incorrect.
Substitute Value
- The TRACS function is blocked.
Possible Source
- Contact resistance or oxidation in the connectors
- Open-circuit in the cable
- Short-circuit to ground or supply voltage in the wiring
- Defective stop lamp switch.
Fault symptom[s]
- No TRACS function.
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.