E36 328 ASC-T/ABS disabled, part identification he required!
Discussion
Hello all,
Back in April my 328 required the OSR jacking point to be welded up to pass its MOT. After the welding work has been done the ABS/ASC-T was disabled and all scanners tried were unable to communicate with the ABS module and clear the code.
The indy got an auto sparky in who gave the all clear on the wiring, fuses and relays and managed to communicate with the ABS module. He discovered that the ABS module was stating that the NSF wheel sensor was faulty but checked it out and it was operating fine, he was also unable to clear the code. The conclusion was that the ABS module was faulty.
My indy sourced and fitted a replacement ABS module but the ABS/ASC-T was still disabled, as the part only cost £40 it was assumed it was DOA and this led to the next step of sending my original ABS module to a refurb company to diagnose and fix.
After a month the ABS module came back as have NO PROBLEMS whatsoever! As you can imagine my indy wasnt impressed and has booked the auto sparky to come back and do his job properly.
Before the second ABS module was fitted a similar thread popped up in which I commented and explained my scenario. A member called iSore helpfully replied with the following:
"It sounds like a pattern sensor is NFG. Could be the ECU - it's bolted to the ABS block under the battery tray, part number ends on 896 or 897."
I have scoured RealOEM and have really struggled to identify the part/s that ISore mentioned. Can anyone help so I can relay the info back to my indy for further investigation.
Back in April my 328 required the OSR jacking point to be welded up to pass its MOT. After the welding work has been done the ABS/ASC-T was disabled and all scanners tried were unable to communicate with the ABS module and clear the code.
The indy got an auto sparky in who gave the all clear on the wiring, fuses and relays and managed to communicate with the ABS module. He discovered that the ABS module was stating that the NSF wheel sensor was faulty but checked it out and it was operating fine, he was also unable to clear the code. The conclusion was that the ABS module was faulty.
My indy sourced and fitted a replacement ABS module but the ABS/ASC-T was still disabled, as the part only cost £40 it was assumed it was DOA and this led to the next step of sending my original ABS module to a refurb company to diagnose and fix.
After a month the ABS module came back as have NO PROBLEMS whatsoever! As you can imagine my indy wasnt impressed and has booked the auto sparky to come back and do his job properly.
Before the second ABS module was fitted a similar thread popped up in which I commented and explained my scenario. A member called iSore helpfully replied with the following:
"It sounds like a pattern sensor is NFG. Could be the ECU - it's bolted to the ABS block under the battery tray, part number ends on 896 or 897."
I have scoured RealOEM and have really struggled to identify the part/s that ISore mentioned. Can anyone help so I can relay the info back to my indy for further investigation.
eztiger328 said:
Hello all,
Back in April my 328 required the OSR jacking point to be welded up to pass its MOT. After the welding work has been done the ABS/ASC-T was disabled and all scanners tried were unable to communicate with the ABS module and clear the code.
The indy got an auto sparky in who gave the all clear on the wiring, fuses and relays and managed to communicate with the ABS module. He discovered that the ABS module was stating that the NSF wheel sensor was faulty but checked it out and it was operating fine, he was also unable to clear the code. The conclusion was that the ABS module was faulty.
My indy sourced and fitted a replacement ABS module but the ABS/ASC-T was still disabled, as the part only cost £40 it was assumed it was DOA and this led to the next step of sending my original ABS module to a refurb company to diagnose and fix.
After a month the ABS module came back as have NO PROBLEMS whatsoever! As you can imagine my indy wasnt impressed and has booked the auto sparky to come back and do his job properly.
Before the second ABS module was fitted a similar thread popped up in which I commented and explained my scenario. A member called iSore helpfully replied with the following:
"It sounds like a pattern sensor is NFG. Could be the ECU - it's bolted to the ABS block under the battery tray, part number ends on 896 or 897."
I have scoured RealOEM and have really struggled to identify the part/s that ISore mentioned. Can anyone help so I can relay the info back to my indy for further investigation.
I would check the wheel speed sensor again, I would buy a genuine wheel speed sensor and check that the sensor ring is also ok. I have experienced ABS sensor problems where a out of spec wheel bearing caused signal issues, due to incorrent distance to the wheel speed sensor.Back in April my 328 required the OSR jacking point to be welded up to pass its MOT. After the welding work has been done the ABS/ASC-T was disabled and all scanners tried were unable to communicate with the ABS module and clear the code.
The indy got an auto sparky in who gave the all clear on the wiring, fuses and relays and managed to communicate with the ABS module. He discovered that the ABS module was stating that the NSF wheel sensor was faulty but checked it out and it was operating fine, he was also unable to clear the code. The conclusion was that the ABS module was faulty.
My indy sourced and fitted a replacement ABS module but the ABS/ASC-T was still disabled, as the part only cost £40 it was assumed it was DOA and this led to the next step of sending my original ABS module to a refurb company to diagnose and fix.
After a month the ABS module came back as have NO PROBLEMS whatsoever! As you can imagine my indy wasnt impressed and has booked the auto sparky to come back and do his job properly.
Before the second ABS module was fitted a similar thread popped up in which I commented and explained my scenario. A member called iSore helpfully replied with the following:
"It sounds like a pattern sensor is NFG. Could be the ECU - it's bolted to the ABS block under the battery tray, part number ends on 896 or 897."
I have scoured RealOEM and have really struggled to identify the part/s that ISore mentioned. Can anyone help so I can relay the info back to my indy for further investigation.
The other issue is connectors. I know of a mechanic that changed the ECU multiple times, and each ECU he fitted seemed to be faulty. The issue was traced to a pin in the big connector block which had been bent over and was not making contact when the connector block was clamped closed.
My guess is that something simple is wrong. Sorry I can't be of more help.
Kawasicki said:
I would check the wheel speed sensor again, I would buy a genuine wheel speed sensor and check that the sensor ring is also ok. I have experienced ABS sensor problems where a out of spec wheel bearing caused signal issues, due to incorrent distance to the wheel speed sensor.
The other issue is connectors. I know of a mechanic that changed the ECU multiple times, and each ECU he fitted seemed to be faulty. The issue was traced to a pin in the big connector block which had been bent over and was not making contact when the connector block was clamped closed.
My guess is that something simple is wrong. Sorry I can't be of more help.
Thanks for your comments, especially regarding the out of spec wheel bearing. I'll have to check my paperwork but i'm pretty sure I had my NSF wheel bearing replaced during the previous years MOT and i dont think it was a genuine part. It also seems a bit of a coincidence that the auto sparky picked up on the NSF wheel sensor communication issues aswell. The other issue is connectors. I know of a mechanic that changed the ECU multiple times, and each ECU he fitted seemed to be faulty. The issue was traced to a pin in the big connector block which had been bent over and was not making contact when the connector block was clamped closed.
My guess is that something simple is wrong. Sorry I can't be of more help.
I agree on the wheel sensor, i've had a couple of occasions in the past where a car part appeared fine but upon closer inspection has turned out to be faulty, its possible the sparky didnt dig deep enough.
I'll pass these details back to my indy.
Again thanks for your input, its been very helpful!
If anyone else can shed some light on this part "bolted to the ABS block under the battery tray" it would be greatly appreciated.
E-bmw said:
So does the e46 not follow recent bm norm with the battery in the boot then?
If so there is nothing under the battery tray, as it sits on the boot floor.
Good point, its been a while since Ive looked under where the battery sits but I think your right, its sits on a raised section of the boot floor.If so there is nothing under the battery tray, as it sits on the boot floor.
Thanks, another thing to add to the check list.
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