I am getting the CATS system fault light in the speedometer display. I have replaced the ADCM, repaired the pigtail connector to it and am still getting the message. There must have been water in the trunk before I bought the car, judging from the condition of the original ADCM and the green mold found in the connector. The car has registered this message since I bought it a couple of years ago now.
I am considering taking it to an authorized Jaguar dealer to get the codes read. But another source tells me that the ABS wheel speed sensors are a prime source of culpability for this problem after the ADCM and connectors have been cleared.
But, the wheel speed sensors appear to be very expensive from the limited search I have made to date. I would just replace them on spec if they weren’t so expensive.
I’d appreciate any information on what to do next.