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
- 1998 2.5TL, see: AIR BAG RESTRAINT SYSTEM
The cruise control unit receives command signals from cruise control main switch and cruise control SET/RESUME/CANCEL switch. Vehicle operating signals are also received from brakelight switch, Vehicle Speed Sensor (VSS), and gearshift position switch (A/T). Cruise control unit sends control signals to cruise control actuator, which regulates throttle position to maintain selected vehicle speed.
The cruise control unit compares actual vehicle speed to selected speed. Cruise control unit will open or close throttle to change and maintain vehicle speed. When cruise control unit receives a disengage signal, cruise control actuator will allow throttle to close. A signal from the brakelight switch disengages the system when the brakes are applied. Gearshift position switch or cancel switch can also send disengage signals to cruise control unit. See Figure -Figure .
Cruise control actuator on 2.5TL is electrically operated with a magnetic safety clutch. Cruise control actuator on 3.2TL and 3.5RL is vacuum operated with a magnetic safety clutch and electrically operated vacuum control valves.
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.