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.
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HOMESERVICE MANUALSJEEP1987CHEROKEE LIMITEDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMSADJUSTMENTSCONTROL MODULE ADJUSTMENT
1987 Jeep Cherokee Limited
Control Module Adjustment
1987 Jeep Cherokee LimitedSECTION Control Module Adjustment
NOTE:
Control module adjustments are preset by manufacturer. If other components in system appear to be functioning properly and cruise control remains inoperative, perform following adjustments to determine if control module is functional.
- Remove control module attaching screws or tie straps and move control module downward for adjustment access. Turn centering adjustment screw to 10 o'clock position. Turn low speed adjustment screw to 10 o'clock position. Turn sensitivity adjustment screw fully clockwise.CAUTION: Adjustment potentiometers are extremely delicate. Carefully insert screwdriver and do not push or turn screws excessively hard. Maximum movement is 3/4 turn.
- Adjustments are not precisely correct for vehicle, but are acceptable to determine if control module is functioning. Perform precise adjustments by road testing vehicle on level road. If adjustments have no effect on cruise control, replace control module.
- If actual engagement speed is 2 MPH or more above selected speed, stop vehicle and turn centering screw 1/16 of a turn counterclockwise. Recheck engagement speed and adjust as necessary.
- If engagement speed is 2 MPH or more below selected speed, turn centering screw 1/16 of a turn clockwise. Recheck engagement speed and adjust as necessary.
RENDER: 1.0x
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.