XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

ANTI LOCK Warning Light

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Old May 25, 2023 | 04:50 PM
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Default ANTI LOCK Warning Light

Hello Everyone,

I'm Jerry Moore, an old new guy, who has enjoyed my 1995 4.0 XJS Convertable since 2005. We retired to Palm Coast Florida @ 5 years ago and enjoy cruising in the sunshine. Like most, I have overcome some problems with my baby, and with the help of the ones who have gone before, I will overcome yet another problem. My ANTI LOCK warning light illuminates after starting and accelerating through @ 15 mph. It stays on until the ignition is turned off, and then stays off till the next time I pass @ 15 mph. My i903 shows code C1065. I have cleared the code. But it reappears the next time I pass @ 15 mph. I have searched the threads and have not found an exact match for my issue. Any help or advice is most appreciated.

Jerry
 
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Old May 25, 2023 | 05:21 PM
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Jerry,

The ABS fault code only resets when driven above 15mph. By the light re-illuminating at 15mph, it means the fault is still there.

Establish what the ABS fault code is, and therefore the problem, by performing the ABS Blink Test. Then we can establish where the problems lies.

Good luck

Paul
 
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Old May 25, 2023 | 05:34 PM
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Originally Posted by Jerry's Jag
Hello Everyone,

I'm Jerry Moore, an old new guy, who has enjoyed my 1995 4.0 XJS Convertable since 2005. We retired to Palm Coast Florida @ 5 years ago and enjoy cruising in the sunshine. Like most, I have overcome some problems with my baby, and with the help of the ones who have gone before, I will overcome yet another problem. My ANTI LOCK warning light illuminates after starting and accelerating through @ 15 mph. It stays on until the ignition is turned off, and then stays off till the next time I pass @ 15 mph. My i903 shows code C1065. I have cleared the code. But it reappears the next time I pass @ 15 mph. I have searched the threads and have not found an exact match for my issue. Any help or advice is most appreciated.

Jerry
Since you have a 95, we need to establish which ABS (antilock) system you have. The easiest way to tell is the shape of the plastic brake fluid reservoir. If it is a rectangle, it is the older Mk3 system. If it is triangular, it is the later Mk4 system. The systems were changed during the 95 model year, called the 1995.25 update.

The earlier system can be checked via blink codes. The later system can only be checked with a Jaguar PDU scanner.

Jon
 
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Old May 26, 2023 | 07:20 AM
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Thanks for the information on the ABS update. Mine is triangular and I have gotten the iCarSoft i903 scanner. The only code I get is the C1095. BTW, I have not gotten the ABS motor to run. I have verified power to the multi-pin connector and cleaned the connector. It's as if the motor is not getting a run signal. Any suggestions?

Jerry
 
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Old May 26, 2023 | 07:58 AM
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You might be having problems with the solder joints on the ABS control module. I followed the instructions in this thread and was able to remove the ABS control module, cut it open, re-flow solder in a couple of places, and RTV the control module back together. Light has not come back.
X300 ABS C1095 DTC fault
 
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Old May 26, 2023 | 09:12 AM
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Originally Posted by Jerry's Jag
Thanks for the information on the ABS update. Mine is triangular and I have gotten the iCarSoft i903 scanner. The only code I get is the C1095. BTW, I have not gotten the ABS motor to run. I have verified power to the multi-pin connector and cleaned the connector. It's as if the motor is not getting a run signal. Any suggestions?

Jerry
You can briefly apply 12v to the motor plug from an external source and see if the motor runs. Disconnect the plug first.
​​​​​I found that the terminals inside the plug on the motor side were pushing back and not making good contact when i plugged it into the socket. The rubber sleeves that retain the terminals inside the plug deteriorate and allow the pushback. You can disassemble the plug to check that out. A retainer just clips on the wire end of the plug, then you can pull the wires with terminals out of the plug. The design of the plug is poor, and I don't know of anyone who has found a suitable replacement. I guess you could epoxy everything in place inside the plug, making sure the terminals are in the proper location.

If you can find someone with an operational PDU, it can run a test to ensure that the motor runs, and that the connection is good without driving the car. It saved me a lot of time on my car.
 
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Old May 27, 2023 | 08:41 AM
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Great information. Just to sure, you are talking about the "plug" attached to the motor itself, correct? I do have the iCarSoft i903 PDU and as I stated the code displayed is C1095. I will check this out this morning.

Many thanks,
Jerry
 
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Old May 27, 2023 | 09:02 AM
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Jerry,

You'd originally mentioned that the fault code was C1065, which was a bit confusing. Now you've confirmed it's a C1095, as you probably know it relates to an ABS Motor circuit failure. Members have mentioned both the solder cracks and the connector problems.

Search the X300 & x308 forums for lots of posts on this issue and suggested remedies.

Cheers

Paul
 
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Old May 27, 2023 | 09:27 AM
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Originally Posted by Jerry's Jag
Great information. Just to sure, you are talking about the "plug" attached to the motor itself, correct? I do have the iCarSoft i903 PDU and as I stated the code displayed is C1095. I will check this out this morning.

Many thanks,
Jerry
Yes, the motor plug.
And I'm taking about the Jaguar dealer PDU. It allows testing of the motor drive circuit.
 
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Old May 27, 2023 | 10:07 AM
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My Bad Paul, the code is C1095. Dyslexia in a mirror.

Thanks,
Jerry
 
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Old May 27, 2023 | 10:09 AM
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Originally Posted by jal1234
Yes, the motor plug.
And I'm taking about the Jaguar dealer PDU. It allows testing of the motor drive circuit.
Does that require a special cable (other than the B203 cable that connects to the OBD2 port?)

I can’t say I’ve ever tried this feature out with my PDU on my 1996 XJS.
 
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Old May 27, 2023 | 10:14 AM
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Got it.
 
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Old May 27, 2023 | 10:55 AM
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Originally Posted by Vee
Does that require a special cable (other than the B203 cable that connects to the OBD2 port?)

I can’t say I’ve ever tried this feature out with my PDU on my 1996 XJS.
No. I had the motor fault trouble code, with the dash warning light and the test was part of fault finding. It goes thru a process of stepping on the brake pedal, and if the brake pedal is driven up by the pump, the motor circuit is good. If it doesn't work, then it leads you thru continuity and voltage tests with those probes. I haven't tried to go thru the tests without having the trouble code first. This is on my 1995.25 6.0 V12, but the 4.0 should be the same.

Jon
 
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Old Jun 18, 2023 | 05:49 AM
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Hello All,
A final update to followers of this thread. It's Fixed! Thanks to the help and information gleaned from you all. I was able to remove the ABS module without disconnecting the brake lines. Sent it to AutoTech in MA, who sent it back saying they could not repair it even though the exact part number was mentioned on their website. Next, I sent it to Module Master in Moscow, ID. They performed as advertised and returned a professional, warrantied rebuild for $150 + shipping. Very pleased and highly recommend. BTW, they also repair displays, modules, and various other electronic items. Reversed the disassembly and whala, no more "ANTI LOCK" warning light, and no more C1095 DTC. A key bit of information in resolving my problem was learning that mine is a 1995.25 model and that extensive brake system changes were included in that mini-facelift.

Again, many thanks,
Jerry
 
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Old Jun 18, 2023 | 07:51 AM
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Thank you so much for taking the time to come back and update us all on the outcome. It will undoubtedly save someone some time in the future.

By the way, for future reference, you have the Teves IV ABS system.
 
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