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 MANUALSJAGUAR2003XK8 2D COUPEREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCRUISE CONTROL SYSTEMSSPEED CONTROL
2003 Jaguar XK8 2D Coupe
Speed Control
2003 Jaguar XK8 2D CoupeSECTION Speed Control
- Speed Control
- Specifications
- Speed Control - Description & Operation
- Speed Control - Diagnostic Procedures
- Principles of Operation
- Detection
- Inspection and verification
- Visual Inspection Chart
- Driver Information Chart
- Default mode definitions
- Diagnostic trouble code (DTC) index
- Pinpoint Tests
- Pinpoint Test A: CHECK THE FORWARD ALERT SWITCH
- Pinpoint Test B: DTC P0566, P0567, P0569, P0570: CHECK THE STEERING WHEEL SWITCHES FOR SHORT TO GROUND
- Pinpoint Test C: DTC P0568: SPEED CONTROL INPUT SIGNAL LOW/HIGH RESISTANCE
- Pinpoint Test D: DTC P1571: BRAKE ON/OFF SWITCH, BRAKE CANCEL SWITCH MALFUNCTION
- Pinpoint Test E: DTC P1697: ADAPTIVE SPEED CONTROL HEADWAY SWITCH(ES) CIRCUIT MALFUNCTION
- Speed Control Module Alignment - General Procedures
- Speed Control Module - Removal and Installation
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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.