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.
Normal Operation
When the stability/traction assist switch is pressed, a ground circuit is momentarily completed. The ABS module detects this ground and disables the roll stability control system and the traction assist system. The system is enabled when the switch is pressed a second time.
Circuit (Y/GY) connects the ABS module to the stability/traction control switch. The stability/traction control switch is grounded along circuit (B/L). When the switch is pressed, the 2 circuits are momentarily connected and the ABS module receives a ground signal. The ABS module sends a message to the instrument cluster and the PCM along the high speed communication area network (HS-CAN) bus to illuminate the traction control/roll stability control indicator and to regulate fuel and spark to the cylinders.
Possible Causes
- Wiring, terminals or connectors
- Stability/traction control switch
- ABS module
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.