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 Systems: Description
The cruise control unit receives command signals from cruise control main switch and cruise control SET/RESUME switch. Cruise control unit receives vehicle operating information from brakelight switch, Vehicle Speed Sensor (VSS), and clutch switch (M/T) or A/T gearshift position switch (A/T). Ignition Control Module (ICM) also provides operating information to cruise control unit.
The cruise control unit compares actual vehicle speed to selected speed. Throttle is either opened or closed based upon this comparison. A signal from the brakelight switch will disengage system when brakes are applied. The clutch switch, gearshift lever position switch, and cancel switch will also send disengage signals to cruise control unit.
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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.