99 xk stability /limp mode
#1
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99xk was showing stability/limp checked the codes and problem related to throttle sensor replaced the TB and on firing up the stability fail light back on with limp did a hard disconnect of the negative battery cable unable to clear the limp.The signal returns with the key in the ignition system check and not starting the engine also have had the abs module reworked I sure need some help
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Join Date: Apr 2012
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stillgotit (09-09-2013)
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Start with the P0560: Vehicle voltage malfunction
Possible causes from JTIS:
ECM battery power supply open circuit, high resistance or ECM ignition power supply open circuit, high resistance
If the ECM isn't getting the correct voltage then the other codes could just be a consequence of that.
The easy place to start would be the ECM fuse and relay in the small fuse box under the cover on the right hand side.
Possible causes from JTIS:
ECM battery power supply open circuit, high resistance or ECM ignition power supply open circuit, high resistance
If the ECM isn't getting the correct voltage then the other codes could just be a consequence of that.
The easy place to start would be the ECM fuse and relay in the small fuse box under the cover on the right hand side.
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stillgotit (09-09-2013)
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gus thanks my error , I have a xk8 and the following codes are showing 1637,1647,0122,0222,0560 scanner shows low power unable to locate codes for jaguars that ar similar any help appricated Rich
#12
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engine change was 1+ years ago no relationship to current changed TB after all symptoms of throttle position sensor bad and a fail on the code \ got I got pretty proficient at disconnecting the neg, cable to clear the stability code. just checked a incomming suggestion to check ecm fuse .I really,really thank all for imputs will post all improvments Rich
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Have you checked the fuses in the small engine control fusebox on the passenger side (US car) near the ECU (under the cover near the firewall)?
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Is the tire in the trunk not securely fastened to be sure it is not bouncing against the high power module. Check and see if the fuses in the high power module in the trunk are not loose. USE CAUTION when moving them or tightening them they are directly off the battery. Disconnecting the battery before checking is a safe option.
#20
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I occaisionally get the same or similar problems on my wife's 1999 XK8 coupe. Manifests itself as ASC Fail and/or drops into limp home mode with or without engine check light.
Alternator puts out 13.85 volts at the battery (checked good under Sears warranty) and the battery reads 12.45 volts across the terminals with the ignition key out. A few days later the static voltage may be 12+ volts or in the low elevens. The starter always spins at the same speed irrespective but if the battery has floated or been drawn into the elevens I can almost guarantee a fault of some description.
Haven't read the codes as I haven't got a reader and, seeing as the faults are gated up from a low battery condition, I wouldn't have much faith in their veracity anyhow.
Good luck with it. If I find the reason for the drift down I'll post it. If anyone has any ideas I'd appreciate it.
Best regards.
Jim
Alternator puts out 13.85 volts at the battery (checked good under Sears warranty) and the battery reads 12.45 volts across the terminals with the ignition key out. A few days later the static voltage may be 12+ volts or in the low elevens. The starter always spins at the same speed irrespective but if the battery has floated or been drawn into the elevens I can almost guarantee a fault of some description.
Haven't read the codes as I haven't got a reader and, seeing as the faults are gated up from a low battery condition, I wouldn't have much faith in their veracity anyhow.
Good luck with it. If I find the reason for the drift down I'll post it. If anyone has any ideas I'd appreciate it.
Best regards.
Jim