Jaguar XJ (X350). Manual - part 848
2 . If an obvious cause for an observed or reported symptom is found, correct the cause (if possible)
before proceeding to the next step.
3 . If the cause is not visually evident, use the Jaguar approved diagnostic system or a scan tool to
retrieve the fault codes before proceeding to the DTC Index, or the symptom chart if no DTCs are set.
Symptom Chart
Symptom
(general)
Symptom (specific)
Possible source
Action
Non-Start
Engine does not crank
Security system
/Immobiliser engaged
Engine in shut-down mode
ECM relay
Battery
Park/Neutral switch
Starting system
Harness
Engine seized
Check that the security system
is disarmed. Check for DTCs.
For ECM relay tests, GO to
Pinpoint Test G531330p32.
For battery information,
Battery For Park/Neutral tests,
External Controls For starting
system,
For engine information,
Engine
Engine cranks, but does
not fire
Engine breather system
disconnected/restricte
d
Ignition system
Fuel system
Harness
Crankshaft position (CKP)
sensor
ECM fault
Check the engine breather
system,
Engine Emission Control - VIN
Range: G45704->G99999 For
ignition system tests,
Engine Ignition - VIN Range:
G45704->G99999 For fuel
system,
Fuel Charging and Controls -
VIN Range: G45704->G99999
For CKP tests, GO to Pinpoint
Test G531330p17.
Refer to the warranty policy
and procedures manual if an
ECM is suspect.
Engine cranks and fires,
but will not start
Evaporative emissions
purge valve
Fuel pump
For purge valve tests,
Evaporative Emissions - VIN
Range: G45704->G99999 For
fuel pump circuit tests,