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.
General Information: General Description
The HECU sends the request messages, such as torque reduction and fuel cut, to the ECM and TCM through CAN bus line for TCS control. The Engine ECM carries out the fuel-cut logic according to the request messages from the HECU and it also retards an ignition timing by torque reduction requests. The TCM maintains current gear position during TCS control in order to prevent an acceleration force from rising by a kickdown shift.
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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.