Jaguar XK 2002 Misc Document Check Engine MIL PDF

Date of issue 11/02 Bulletin Number 303-58 Page 1 of 6
DATE
303-58
11/02V8 XJ Series/XK
SERVICE
TECHNICAL BULLETIN
1999-2001 MY XK Range
1999-2001 MY V8 XJ Series
031303-A22860
853936-F40117
MODEL
VIN
Check Engine MIL - DTC P0121 Flagged –
Connector Material Mismatch –
AJ27 Engines – Modify Harness
Issue:
On some 1999-2001 XK and XJ vehicles within the above VIN ranges, with AJ-27 engines,
Diagnostic Trouble Code (DTC) P0121 (Throttle Position Signal) may be present. A possible
cause is a mismatch of electrical connector terminal materials between the Throttle Position
Sensor (TPS) and the wiring harness electrical connector (gold terminals on the TPS and tin
terminals on the wiring harness).
Action:
For 1999 MY vehicles, also refer to Technical Bulletin 303-S498, Service Action S498.
On a customer complaint basis only, install new gold terminals into the TPS wiring harness
electrical connector as follows:
HARNESS MODIFICATION PROCEDURE
1. Record customer preferences as described in Technical Bulletin 414-01. Remove battery
cover and disconnect battery.
2. Open hood and fit fender protectors.
3. On XK Series vehicles:
Remove induction elbow to throttle housing securing screws.
Disconnect induction elbow from throttle housing and reposition for access.
On V8 XJ Series vehicles:
Remove left and right hand bulkhead covers.
Remove engine compartment rear cover.
Remove nut securing engine harness main electrical connector to support bracket.
Reposition main electrical connector upwards.
4. On all vehicles, disconnect TPS electrical connector (Illustration 1).
ILLUSTRATION 1
TPS ELECTRICAL CONNECTOR

Summary of Content

Date of issue 11/02 Bulletin Number 303-58 Page 1 of 6DATE303-5811/02V8 XJ Series/XKSERVICETECHNICAL BULLETIN1999-2001 MY XK Range1999-2001 MY V8 XJ Series031303-A22860853936-F40117MODELVINCheck Engine MIL - DTC P0121 Flagged Connector Material Mismatch AJ27 Engines Modify HarnessIssue:On some 1999-2001 XK and XJ vehicles within the above VIN ranges, with AJ-27 engines,Diagnostic Trouble Code (DTC) P0121 (Throttle Position Signal) may be present. A possiblecause is a mismatch of electrical connector terminal materials between the Throttle PositionSensor (TPS) and the wiring harness electrical connector (gold terminals on the TPS and tinterminals on the wiring harness).Action:For 1999 MY vehicles, also refer to Technical Bulletin 303-S498, Service Action S498.On a customer complaint basis only, install new gold terminals into the TPS wiring harnesselectrical connector as follows:HARNESS MODIFICATION PROCEDURE1. Record customer preferences as described in Technical Bulletin 414-01. Remove batterycover and disconnect battery.2. Open hood and fit fender protectors.3. On XK Series vehicles: Remove induction elbow to throttle housing securing screws. Disconnect induction elbow from throttle housing and reposition for access.On V8 XJ Series vehicles: Remove left and right hand bulkhead covers. Remove engine compartment rear cover. Remove nut securing engine harness main electrical connector to support bracket. Reposition main electrical connector upwards.4. On all vehicles, disconnect TPS electrical connector (Illustration 1).ILLUSTRATION 1TPS ELECTRICAL CONNECTOR