Phoebus89
Member Since: 02 Jan 2019
Location: Doncaster
Posts: 40
  
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Right. They've not worked from day one of owing the car. I've never bothered looking in to it but seeing as we're in lockdown I thought I'd give it a bash. Symptoms and findings so far:
On ign, rear sounder beeps for 2-3 seconds and pdc light flashes continuously.
Fault codes: B1B57-11 2f and B1B58-11 2f
Unplug rear loom from module and the fault is the same.
Unplug the front loom from the module and the faults disappear completely but the pdc still doesn't work even with the front ones disabled on the ccf.
Live data at this point just shows N/A
Front and rear looms are fine and all sensors tested and working as they should with a multimeter.
I'm thinking a duff module or wiring shorting out somewhere between the module and front sensors. Are there any common places to look for knackered pdc wiring? What are your thoughts?
Any info/things to look for before I start pulling bits apart would be great.
Thanks!
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 25th Mar 2020 1:23 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10428
 
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So with the fronts disabled in the CCF (leave them like that)
and the front loom unplugged
what happens?
You need to release the park brake and select reverse for them to work (So chock wheels!)
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| 25th Mar 2020 2:05 pm |
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Phoebus89
Member Since: 02 Jan 2019
Location: Doncaster
Posts: 40
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Absolutely nothing Pete. It's as if it doesn't even have pdc. No tone when reverse selected, and no clicking from the rear.
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| 25th Mar 2020 2:07 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10428
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Have you got the park brake off?
Is the switch light now on continuously when in reverse
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| 25th Mar 2020 2:11 pm |
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Phoebus89
Member Since: 02 Jan 2019
Location: Doncaster
Posts: 40
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Nope, no light on the switch at all with front unplugged and park brake off.
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| 25th Mar 2020 2:17 pm |
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Phoebus89
Member Since: 02 Jan 2019
Location: Doncaster
Posts: 40
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One thing I have noticed now is that it comes up on the screen "Park brake off, lift switch to apply" when I select reverse which I'm sure it never used to do.
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| 25th Mar 2020 2:22 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10428
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I’d check the Ccf again, ensure you have it set to read only.
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| 25th Mar 2020 7:37 pm |
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Phoebus89
Member Since: 02 Jan 2019
Location: Doncaster
Posts: 40
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I did double check it buddy. Let the car to go to sleep, checked it again and rewrote it again to be sure and it really is like the car has no pdc fitted.
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| 25th Mar 2020 10:35 pm |
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Phoebus89
Member Since: 02 Jan 2019
Location: Doncaster
Posts: 40
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Okay, ignore some of the above. With just the big beige plug plugged in, the fault is still present which tells me that it's definitely either the wiring to the pdc module or the actual module itself. Anyone able to confirm?
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| 26th Mar 2020 2:00 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10428
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you need to leave all the plugs in., because the front loom also carries the power and speaker and command etc
That explains why it was dead.
You could measure the voltage between the black and brown wires by the headlight if you want, with the system on. See if you get 5v or 12v etc
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| 26th Mar 2020 4:10 pm |
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Prette
Member Since: 16 Mar 2020
Location: Previously Stoke-ST4 (pre-pandemic), Mostly The Hague (NL) partially Lyngby (DK) certainly somewhere
Posts: 160
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Hi again all,
I am slowly fixing my D3 issues and improvements. I am in a battle against my PDC since some time. I had an intermittent failure before. Where sometimes it worked and sometimes it beeped. I changed the bumper and everything with it, so, new loom, new sensors etc... I finally got my DTC reader... the faults were many (because I removed the looms and sensors to test) so I cleared everything and tried again.
The final codes are B1B57 - Front sensors power circuit and B1B58 - Rear sensors power circuit.
Does that mean my PDC module is gone forever? or is there something fix I am missing here?
ps.: just to clarify: it beeps in the rear, if I remove the rear loom, it beeps in the front. 
Does anyone know what is wrong?
Thanks
Andy.
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| 30th Apr 2020 6:50 pm |
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Brookert
Member Since: 03 Apr 2020
Location: Suffolk
Posts: 52
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Were they definitely new looms?
You need to crack out the multimeter and find where the open circuits are.
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| 30th Apr 2020 6:56 pm |
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Prette
Member Since: 16 Mar 2020
Location: Previously Stoke-ST4 (pre-pandemic), Mostly The Hague (NL) partially Lyngby (DK) certainly somewhere
Posts: 160
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Thanks mate I will do that again. last time I checked, all was fine. To be honest, I have two looms and 12 sensors (4 to front and 8 to rear), no combination worked so far.
Can it be the module or does it give a different fault?
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| 30th Apr 2020 7:04 pm |
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Brookert
Member Since: 03 Apr 2020
Location: Suffolk
Posts: 52
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I'm not sure. Are all sensors clicking when you put your ear to them? If they are, that would suggest they all have power, ground and signal to the module.
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| 30th Apr 2020 7:06 pm |
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Prette
Member Since: 16 Mar 2020
Location: Previously Stoke-ST4 (pre-pandemic), Mostly The Hague (NL) partially Lyngby (DK) certainly somewhere
Posts: 160
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Unfortunately, none of the sensors click (rear or front).
I assumed that once a fault is detected everything stops.
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| 30th Apr 2020 7:18 pm |
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