XJ-8 Sedan (X308) V8-4.0L (AJ27) (1999)
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PROM - Programmable Read Only Memory: Customer Interest
Engine Controls - Hard Start/No Start Condition
V8 XJ Series/XK
DATE: 04/02
303-52
MODEL
1999-2000 MY XK Range
1999-2000 MY V8 XJ Series
VIN
031303-A11050
853956-F20644
Difficult Or Non-Start/Hesitation - Normally Aspirated AJ 27 Engines - Reflash ECM
Issue:
This Technical Bulletin has been issued to address two specific customer complaints as shown:
^
Difficult/non-start from cold after moving the vehicle a short distance the previous day (1999-2000 MY).
^
Slight engine hesitation when the air conditioning or slow speed-cooling fan operates (2000 MY). (On V8 XJ Series Vehicles between 50 mph and
70 mph (80 - 113 km/h) at steady speed.)
Note:
S479 still applies to AJ26 (1997-98 MY) vehicles.
Action:
In case of a customer complaint of the above condition(s) on XK or XJ vehicles within the above VIN ranges, reprogram the Electronic Control Module
(ECM) using the latest release (JTP 759/12 or later) of the Worldwide Diagnostic System (WDS) disc.
REPROGRAMMING PROCEDURE
Note:
Ensure WDS is loaded with the latest level software (JTP 759/12 or later).
1.
Position WDS alongside vehicle, switch "ON" Portable Test Unit (PTU) and allow software to load.
2.
Connect PTU to vehicle via diagnostic cable.
3.
Enter vehicle VIN number and navigate to content model screen, select engine system, and then go to DTC monitor.
4.
Read engine DTCs, if stored, clear from memory.
Note:
If any OBD codes stored, find fault and carry out separate Warranty Claim.
5.
Navigate to configuration main menu; select and run "re-configure existing ECM".
6.
After reprogramming of the ECM is complete, switch "OFF" PTU, disconnect and return WDS to original location.
