Visual Inspection Chart

Mechanical	Electrical
Engine oil level Cooling system coolant level Fuel level Fuel Contamination/grade/quality Throttle body Poly-vee belt	Fuses Wiring harness Electrical connector(s) Controller Area Network circuits Sensor(s) Engine control module (ECM) Transmission control module

Verify the following systems are working correctly:
- Air intake system
- Cooling system
- Charging system
- Fuel charging system
- Ignition system
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
NOTE: If a DTC cannot be cleared, then there is a permanent fault present that flags again as soon as it is cleared. (The exception to this is P1260, which will only clear following an ignition OFF/ON cycle after rectification.)
If the cause is not visually evident and the Jaguar approved diagnostic system is not available, use a scan tool to retrieve the fault codes before proceeding to the diagnostic trouble code (DTC) index chart, or the symptom chart if no DTCs are set.

CAUTION: When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00.

NOTE: When performing electrical voltage or resistance tests, always use a digital multimeter (DMM) accurate to 3 decimal places, and with an up-to-date calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.

NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.

Symptom Chart

Symptom	Possible source	Action
Speed control inhibited or disabled	Default mode enabled Speed control switch(es) Throttle sensors Stop lamp switch	Check message center for default message. For speed control switch tests, Refer to Pinpoint Test A , Refer to Pinpoint Test B ., and Refer to Pinpoint Test D .. For throttle position sensor tests, Refer to Electronic Engine Controls . Check electrical guides for stop light switch information.
Unable to regulate/adjust vehicle speed	Steering wheel switch malfunction	For steering wheel switch tests, Refer to Pinpoint Test B ..
Unable to cancel speed control from steering wheel	Steering wheel switch malfunction	For steering wheel switch tests, Refer to Pinpoint Test B ..
Unable to cancel speed control from brake pedal	Brake cancel switch malfunction	For brake cancel switch tests, Refer to Pinpoint Test D ..