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.
Active Skid Control System Operation: Notes
The TCL/ASC-ECU receives information from the PCM, the steering sensor, the G and yaw-rate sensor and the wheel speed sensor. If the ECU determines that the vehicle is tending to oversteer or understeer, it sends signals to the active skid control system valves and the ABS solenoid valves to increase the fluid pressure to the wheels.
The system closes the cut valve to shut the fluid channel to the suction valve, and activates the pump motor. The brake fluid, which is pumped through the hydraulic unit reservoir, will be supplied to the front left wheel during oversteering or the rear right wheel during understeering when the vehicle is at right turn.
Furthermore, the system also controls the engine if the accelerator pedal is depressed excessively.
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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.