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.
Traction Control System (TCS)
When drive wheel slip is noted while the brake is not applied, the electronic brake control module (EBCM) will enter traction control mode. The traction control system (TCS) controls vehicle traction by applying brakes and limiting engine torque to the drive wheels. The EBCM performs the fallowing TCS operations:
- The EBCM requests the powertrain control module (PCM) to reduce the amount of torque to the drive wheels via serial data messages.
- The PCM reduces torque to the drive wheels by retarding spark timing and throttle actuator control (TAC).
- The PCM reports the amount torque delivered to the drive wheels via serial data messages.
- The EBCM applies brake pressure to the slipping wheel in order to transfer torque to the gripping wheel.
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.