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.
Cruise Control Disengaged
The cruise control module disengages the cruise control operation based on the signals from the following switches:
- The On/Off switch
- The clutch start switch
- The stop lamp switch
- The TCC brake switch
The stop lamp switch, the TCC brake switch, and the clutch start switch are used to disengage the cruise control. The stop lamp switch and the TCC brake switch are incorporated into an assembly and are mounted to the brake pedal bracket. When the cruise control is engaged and the brake pedal is depressed, the normally closed TCC brake switch opens and the normally open stop lamp switch closes. The cruise control module detects a low signal voltage on the TCC brake/cruise control release signal circuit and a high voltage signal on the center high mounted stop lamp (CHMSL) supply voltage/stop lamp supply voltage circuit. When the clutch pedal is depressed, the normally closed clutch start switch opens and the cruise control module detects a low voltage signal on the CPP switch signal circuit. When the cruise control On/Off switch is switched to Off, the cruise control module detects a low voltage signal on the cruise control on switch signal circuit. The vehicle speed stored in the memory of the cruise control module will be erased when the cruise control On/Off switch is turned to Off, or the ignition switch is turned off.
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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.