ABS Module vs ABS Pump
#21
P1637 means the module is not communicating with the CAN bus (the module sends a code to the network every 200 milliseconds, if it is not sent for a short period of around a second, trouble results, including your dash warnings). Could be intermittent, could be persistent.
Could be other things, but this is a pretty typical sign that you need to resolder the intermittently disconnecting solder joints in the module.
If someone has just 'fixed' your module or you have just purchased a reconditioned one, this is a good sign you should send it back.
Could be other things, but this is a pretty typical sign that you need to resolder the intermittently disconnecting solder joints in the module.
If someone has just 'fixed' your module or you have just purchased a reconditioned one, this is a good sign you should send it back.
I do not want to remove that damn module again, but I probably should disconnect/reconnect both the connectors. The big one slid on like butter, and my pics of it before reinstall show no bent pins. The pump wire connection was a bitch to get off, and I could have messed up those "too short" wires at the connector I suppose. But it is in there very tight.
The "incorrect part installed" warning is just stupid. Even if this module was replaced before I got the car, I have been driving it since 2008 with no issues until I stopped driving it very often. Drained battery? Yes, but new one in January and I don't think it ran down since then. It always tests at 12.4 or more after sitting. I do use a 2A trickle charger very often now.
At this point I hope maybe....maybe...it is an ECU issue. Maybe.
Last edited by oldjaglover; 09-28-2021 at 04:53 PM.
#22
The CAN bus is the wiring between the ABS/ECM(engine)/TCM(transmission)/IPK(Instrument panel) (and the OBDII port). It also goes through the shift module, but that does nothing active. Yours is a very early version of this, so it's fairly simple. Digital data is passed between all of the modules (like ABS wheel speeds to the ECM, etc) on the bus.
The system is designed to recognize problems with bits of the car and report these codes via an OBDII device/query.
So, it is possible that this is being caused by the ECM in your model year, but it's an odd problem that the ECM wouldn't recognize the message coming from the ABS but still recognizes the messages coming from the TCM and IPK.
On the soldering, did he remove the old solder or just add new solder? But I'm with him, there were multiple flaws in the solder job on every module I've looked at, especially on the connector. They may not have been causing problems (yet), but they looked quite awful for a professional job.
But yes, it is possible that there is a problem with the connectors. I'd thoroughly clean them with connector cleaner.
The system is designed to recognize problems with bits of the car and report these codes via an OBDII device/query.
So, it is possible that this is being caused by the ECM in your model year, but it's an odd problem that the ECM wouldn't recognize the message coming from the ABS but still recognizes the messages coming from the TCM and IPK.
On the soldering, did he remove the old solder or just add new solder? But I'm with him, there were multiple flaws in the solder job on every module I've looked at, especially on the connector. They may not have been causing problems (yet), but they looked quite awful for a professional job.
But yes, it is possible that there is a problem with the connectors. I'd thoroughly clean them with connector cleaner.
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oldjaglover (09-28-2021)
#23
The CAN bus is the wiring between the ABS/ECM(engine)/TCM(transmission)/IPK(Instrument panel) (and the OBDII port). It also goes through the shift module, but that does nothing active. Yours is a very early version of this, so it's fairly simple. Digital data is passed between all of the modules (like ABS wheel speeds to the ECM, etc) on the bus.
The system is designed to recognize problems with bits of the car and report these codes via an OBDII device/query.
So, it is possible that this is being caused by the ECM in your model year, but it's an odd problem that the ECM wouldn't recognize the message coming from the ABS but still recognizes the messages coming from the TCM and IPK.
On the soldering, did he remove the old solder or just add new solder? But I'm with him, there were multiple flaws in the solder job on every module I've looked at, especially on the connector. They may not have been causing problems (yet), but they looked quite awful for a professional job.
But yes, it is possible that there is a problem with the connectors. I'd thoroughly clean them with connector cleaner.
The system is designed to recognize problems with bits of the car and report these codes via an OBDII device/query.
So, it is possible that this is being caused by the ECM in your model year, but it's an odd problem that the ECM wouldn't recognize the message coming from the ABS but still recognizes the messages coming from the TCM and IPK.
On the soldering, did he remove the old solder or just add new solder? But I'm with him, there were multiple flaws in the solder job on every module I've looked at, especially on the connector. They may not have been causing problems (yet), but they looked quite awful for a professional job.
But yes, it is possible that there is a problem with the connectors. I'd thoroughly clean them with connector cleaner.
#24
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oldjaglover (09-28-2021)
#25
The ABS module does NOT need to be removed if you are using another module to test the system.
I have installed another compatible module to plug into the CAN bus by stuffing the replacement behind the head lamp and plugging it into the car harness.
The replacement module does not have to be physically mated to the pump/valve block assy to make the network 'HAPPY' electronically.
Unfortunately the 1997 XK ABS module is a 'one-off' MY so you are limited to JLM20129 or JLM20130 (5 pipe or 6 pipe) (6 valve or 9 valve) so testing with a 'good-used' is not always possible unless you have access to them.
I used to repair the modules and then find a compatible car to read and clear the DTCs to ensure that the repair went well.
I just substituted the repaired module stuffed behind the headlamp and then attached the connectors to communicate with the module with WDS/IDS.
Once the DTCs were cleared and the modules confirmed a GOOD, I reconnected the original car module.
When I worked at the dealer, the 1998 to 2002 Xk or XJ cars were always around to mate up the correct car.
The 1997 XK8 was the hardest to find. There was not always that MY in the shop for repair so it was a waiting game for one to finally show up to test the module.
I have installed another compatible module to plug into the CAN bus by stuffing the replacement behind the head lamp and plugging it into the car harness.
The replacement module does not have to be physically mated to the pump/valve block assy to make the network 'HAPPY' electronically.
Unfortunately the 1997 XK ABS module is a 'one-off' MY so you are limited to JLM20129 or JLM20130 (5 pipe or 6 pipe) (6 valve or 9 valve) so testing with a 'good-used' is not always possible unless you have access to them.
I used to repair the modules and then find a compatible car to read and clear the DTCs to ensure that the repair went well.
I just substituted the repaired module stuffed behind the headlamp and then attached the connectors to communicate with the module with WDS/IDS.
Once the DTCs were cleared and the modules confirmed a GOOD, I reconnected the original car module.
When I worked at the dealer, the 1998 to 2002 Xk or XJ cars were always around to mate up the correct car.
The 1997 XK8 was the hardest to find. There was not always that MY in the shop for repair so it was a waiting game for one to finally show up to test the module.
#26
The ABS module does NOT need to be removed if you are using another module to test the system.
I have installed another compatible module to plug into the CAN bus by stuffing the replacement behind the head lamp and plugging it into the car harness.
The replacement module does not have to be physically mated to the pump/valve block assy to make the network 'HAPPY' electronically.
Unfortunately the 1997 XK ABS module is a 'one-off' MY so you are limited to JLM20129 or JLM20130 (5 pipe or 6 pipe) (6 valve or 9 valve) so testing with a 'good-used' is not always possible unless you have access to them.
I used to repair the modules and then find a compatible car to read and clear the DTCs to ensure that the repair went well.
I just substituted the repaired module stuffed behind the headlamp and then attached the connectors to communicate with the module with WDS/IDS.
Once the DTCs were cleared and the modules confirmed a GOOD, I reconnected the original car module.
When I worked at the dealer, the 1998 to 2002 Xk or XJ cars were always around to mate up the correct car.
The 1997 XK8 was the hardest to find. There was not always that MY in the shop for repair so it was a waiting game for one to finally show up to test the module.
I have installed another compatible module to plug into the CAN bus by stuffing the replacement behind the head lamp and plugging it into the car harness.
The replacement module does not have to be physically mated to the pump/valve block assy to make the network 'HAPPY' electronically.
Unfortunately the 1997 XK ABS module is a 'one-off' MY so you are limited to JLM20129 or JLM20130 (5 pipe or 6 pipe) (6 valve or 9 valve) so testing with a 'good-used' is not always possible unless you have access to them.
I used to repair the modules and then find a compatible car to read and clear the DTCs to ensure that the repair went well.
I just substituted the repaired module stuffed behind the headlamp and then attached the connectors to communicate with the module with WDS/IDS.
Once the DTCs were cleared and the modules confirmed a GOOD, I reconnected the original car module.
When I worked at the dealer, the 1998 to 2002 Xk or XJ cars were always around to mate up the correct car.
The 1997 XK8 was the hardest to find. There was not always that MY in the shop for repair so it was a waiting game for one to finally show up to test the module.
#27
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C1095 originates from the ABS module, and is specific: 'Pump motor failure' (nearly always the soldering on the ABS module pcb)
P1637 is thrown by the ECM complaining about the ABS module (or CAN connectivity to it)
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motorcarman (09-29-2021),
oldjaglover (09-30-2021)
#28
SO CLOSE.....but so far....
#29
#30
#31
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oldjaglover (04-10-2023)
#32
I agree that the pump wiring is stupidly short and unmanageable. My connector was really really hard to get off....had to use a big pair of needle nose pliers and wedge it off. I was afraid I had damaged the wiring, but when we did a continuity check from the end of the connector back to the pump it read approx. 1.5 ohms, or correct for no current flowing through. The end at the circuit board showed OK. So, I guess I didn't damage the actual wiring or the plug.
#33
#34
My module has been saved by Module Repair Pro, Van Nuys, CA. $100 plus shipping both ways, but it was worth it. I don't know exactly what they did, but everything works now. NO MORE IDIOT LIGHTS. No "WRONG PART INSTALLED" messages. No DTCs. I cleared whatever codes might have been there from before, then plugged everything in and powered up. Great! I drove around and put 34-40 miles on straight and very twisty roads at various speeds. Speedo/ODO works again.
Last edited by oldjaglover; 12-13-2021 at 12:23 AM.
#35
My module has been saved by Module Repair Pro, Van Nuys, CA. $100 plus shipping both ways, but it was worth it. I don't know exactly what they did, but everything works now. NO MORE IDIOT LIGHTS. No "WRONG PART INSTALLED" messages. No DTCs. I cleared whatever codes might have been there from before, then plugged everything in and powered up. Great! I drove around and put 34-40 miles on straight and very twisty roads at various speeds. Speedo/ODO works again.
That lasted about a month. Christmas tree again, CEL on. Bought a whole replacement pump/module assembly.
#36
Might be talking rubbish here but ...............
I don't think there's a separate "module" and "pump". As far as Jaguar is concerned, the whole unit (electronics and mechanicals) are ONE part :
Attachment 132068
If the PCB has a wiring issue, it can be separated from the rest of the unit and repaired, but I don't think there are two parts with two different part numbers.
I don't think there's a separate "module" and "pump". As far as Jaguar is concerned, the whole unit (electronics and mechanicals) are ONE part :
Attachment 132068
If the PCB has a wiring issue, it can be separated from the rest of the unit and repaired, but I don't think there are two parts with two different part numbers.
#37
It was a bitch to do the R&R!
So...all hooked up and TOTAL FAILURE. Same lights, same idiotic "incorrect part installed" or whatever it always says.
My son checked the codes. At first it said "0" codes, then the 1637 came back. He cleared the codes and the 1637 came back. So, I'm right back where I started.
What can I try before giving the car away or ripping everything out and starting over??
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