2002 Jaguar XJR BaseFACTORY OEM SERVICE PROCEDURE

Fuelling Adaptations Drive Cycle

NOTE: Make sure the engine is at normal operating temperature. (75°C, 167°F)
  1. Either the Jaguar approved diagnostic system (where available), or a scan tool should be connected to measure the Mass Air Flow rate. Most generic scan tools should be capable of reading this parameter.
FUELLING ADAPTATIONS DRIVE CYCLE

Site Mass Air Flow (grams/second) Driving Conditions
1 Up to 7 g/s Idle in P  for 2 minutes
2 10 to 14 g/s Open throttle in P  for 2 minutes
3 18 to 22 g/s (1) Open throttle in P  for D  with guidance for 2 minutes
4 25 to 30 g/s (1) Drive with guidance for 2 minutes
(1) Depending on road conditions and dealer location, it may be difficult to achieve the road speeds necessary to reach the air flow indicated. It is possible to reach these air flow figures by inducing a load on the vehicle, (making use of hills, using a lower gear ratio, etc) or, if no alternative is possible, by restraining the vehicle and reaching the air flow figure stationery in D.
WARNING: This should not be attempted without the vehicle being in a safe area and suitably chocked. Failure to follow this instruction may result in personal injury.

Without using the Jaguar approved diagnostic system or a scan tool with system readiness capability, it will not be possible to confirm when the adaptations are complete, unless P1111, (system checks complete since last memory clear) is flagged. If such equipment is not available, ALL the diagnostic monitors will have to run to enable DTC P1111 to be flagged. In some US states, this code is a requirement for annual emissions tests.

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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.