Inspection and Verification

Verify the customer concern by operating the system.

Visually inspect for a obvious signs of mechanical damage.

Visual Inspection Chart

Mechanical	Electrical
Accelerator pedal Accelerator cable Accelerator cable adjustment	Fuses. Wiring harness Electrical connector(s) Engine control module (ECM) Accelerator pedal position sensor

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
Where the Jaguar approved diagnostic system is available, complete the S93 report before clearing any or all fault codes from the vehicle.
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 fault code reader to retrieve the fault codes before proceeding to the Diagnostic Trouble Code (DTC) Index Chart.
Using the Jaguar approved diagnostic system where available, and a scan tool where not, check the freeze frame data for information on the conditions applicable when the fault was flagged. The format of this will vary, depending on the tool used, but can provide information useful to the technician in diagnosing the fault.

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.

Diagnostic Trouble Code (DTC) index

DTC	Description	Possible Source	Action
P1122	Accelerator pedal position (APP) sensor circuit low voltage - APP1	APP sensor to ECM sensing circuit "1"; open circuit, short circuit to ground or high resistance APP sensor power supply circuit; open circuit, high resistance APP sensor failure	Refer to Electronic Engine Controls article.
P1123	Accelerator pedal position (APP) sensor circuit high voltage - APP1. Note; This DTC could be flagged by both sensor element circuits having faults	APP sensor to ECM sensing circuit(s) short circuit to high voltage APP sensor ground circuit(s) open circuit APP sensor failure	Refer to Electronic Engine Controls article.
P1215	Accelerator pedal position (APP) sensor sensing circuit low voltage - APP2	APP sensor to ECM sensing circuit (APP2); open circuit, short circuit to ground, high resistance APP sensor supply circuit (to splice) open circuit, high resistance APP sensor failure	Refer to Electronic Engine Controls article.
P1216	Accelerator pedal position (APP) sensor sensing circuit high voltage - APP2. Note; This DTC could be flagged by both sensor element circuits having faults	APP sensor to ECM sensing circuit(s) short circuit to high voltage APP sensor ground circuit(s) (to splice) open circuit APP sensor failure	Refer to Electronic Engine Controls article.
P1344	Accelerator pedal position (APP) sensor sensing circuits range/performance	APP sensor to ECM sensing circuits; short circuit, open circuit, high resistance APP sensor supply circuits; short circuit, open circuit, high resistance APP sensor ground circuits; open circuit APP sensor failure	Refer to Electronic Engine Controls article.