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Matt
Matt, Engineer
Category: Jaguar
Satisfied Customers: 20588
Experience:  Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
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2002 Jaguar X Type 2.5 DSC Fault on dash with ABS light on

Customer Question

Customer: 2002 Jaguar X Type 2.5 DSC Fault on dash with ABS light on If I disconnect/reconnect the plug to the ABS module the light and warning goes out and stays off for a while then after several ***** ***** it comes back on
JA: Thanks. Can you give me any more details about your issue?
Customer: Doug replaced Transfer case which was locked up
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Customer: sounds like he has the same problem
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Submitted: 11 months ago.
Category: Jaguar
Expert:  Matt replied 11 months ago.

Hello

If the ABS light is staying on then this would indicate a fault with the system which shouldn't effect the regular braking performance so the car is still safe to drive.

The quickest route to repair is to have the car plugged into a diagnostic machine which will read off the fault code stored in the ECU (providing the light is still on at this point) and indicate which sensor has failed or whether the fault is more serious.

However with ABS systems 99% of the time its a problem with one of the wheel speed sensors and I'd first check the connections at all four corners first for any signs of corrosion or chafed wiring.

The sensor is located in the wheel hub so you'll have to remove each wheel in turn to inspect them all.

Also check that the toothed wheel that the sensor points to is clean and free of any debris.

you can check each sensor's function by plugging the two output wires into an AC voltmeter and spinning the wheel quite quickly, you should get a voltage signal that increases with rev's.

Its possible that the fault is only a bad connection to one of the wheel sensors.

This may be remedied by removing each wheel in turn and unplugging each sensor and cleaning the contacts with a squirt of electrical contact cleaner. Then refitting.

Expert:  Matt replied 11 months ago.

Hi

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