XJ-S Coupe (XJ27) V12-6.0L (1994)
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Technical Service Bulletin # 18-57
Date: 010801
Campaign - Ground Strap Installation
18-57
DATE: 08/01
MODEL:
1994-95 MY V12XJS
1994 MY XJ12
MIL Illuminated - H02S - DTC 44 and/or 45 - Add Ground Straps - Service Action S494
ISSUE:
Service Action S494 applies to the following vehicles:
^
1994 to 1995 Model Year XJSV12 Vehicles
VIN Range: 188105-221234
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1994 Model Year XJ12 Vehicles
VIN Range: 673590-708235
In addition, the following 1994 Model Year pre-production XJ12 vehicles should be modified: 671007, 671040, 671110, 671139, 671177, 671224,
672305 and 672308 (USA) and 671078 for Canada.
Some XJS 6.0LV12 and XJ12 series vehicles within the above VIN ranges may experience customer concerns of the 'check engine' malfunction indicator
light illuminating with diagnostic trouble codes (DTCs) FF44 and/or FF45 stored. These DTCs show an inconsistent reading from the Heated Oxygen
Sensors (H025). The H025 are giving a faulty reading due to a slight degradation of the engine to body ground straps.
In order to prevent this issue occurring again, two supplementary ground straps need to be added to all vehicles within the above VIN range.
PARTS INFORMATION
