Member Since: 17 Oct 2018
Location: Lowestoft
Posts: 21
Another pdc module problem
Hi to all , since I bought my disco 3 a few months ago my pdc system has never worked , just a flashing light on the centre console and front parking sensors inactive on the dash information
So far I have repaired both front and rear harnesses as I found they both had some broken wires, replaced the rear sounder which now beeps when selecting reverse, but the IID tool dtc codes are telling me there is no power to front or rear sensors
I have checked the continuity of both front and rear harnesses and there both reading pretty much bang on 1 so I'm guessing my last resort is a faulty pdc module,
I have been looking for a second hand module but see that some have different numbers etc , and wondered if it will matter ie mine says ywc500313 but seen plenty with 312 at the end and wondered if anyone could shed some light on the matter ?
Since repairing the harnesses and sounder the rear beeps now when I select reverse but does nothing and the light does not flash anymore
Added below screen shot of IID dtc and module
12th Dec 2018 11:27 pm
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1782
I would disconnect the pdc unit and see what voltages are at the connector - if power is okay then possibly faulty unit
Spooky got the same error, mine stopped a month after I bought mine last December then decided to work for a while in November packed up again last week. Was just about to order 2 new looms so I think you've saved me an expense, will watch with interest.Land Rovers don't leak they just mark there spot
1973 Land Rover Series 3 110 safari Gone but not forgotten
1990 Discovery 200Tdi Gone thank god
1996 Discovery 300Tdi sadly missed (still going strong but not with me)
2003 Discovery TD5 Gone to LR heaven
2004 Discovery TD5 Gone to Aberdeen hope it likes it there
2005 RRS HSE Rimini Red (my Disco 3 in a posh frock)
Think I see a pattern here
13th Dec 2018 11:43 am
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
Any of the 8 sensors can cause this error message, or a wiring short.
I would recommend you unplug the front sensor loom below the R headlight.
Clear the codes. (yes it will complain about invalid front sensors)
select reverse with park brake off.
and see if your previous short code returns. If it does, it probably one of the rear sensors faully.
If the code has gone, you can edit the CCF to say rear sensors only fitted, and the rears should work, until you get round the fixing the front sensor.
I suspect the different in ecu number is due to the behaviour of when the front sensors are enabled.
Early cars enable them automatically when car drops below 10mph
13th Dec 2018 1:09 pm
Glennyboy10
Member Since: 17 Oct 2018
Location: Lowestoft
Posts: 21
Cheers for the replies guys
Ok so I've been messing with it tonight and Pete you are correct I disconnected the fronts and hey Presto all the rears now work correctly , so I guess it's just tracking down which front one is at fault
Least I didn't rush out and buy a module
I thought the iid would tell me which sensor but I guess not
What is the best way to find out which one is faulty ? Is there a specific way , I'm guessing the terminals are battery positive , neg, and signal wire?
13th Dec 2018 11:19 pm
Glennyboy10
Member Since: 17 Oct 2018
Location: Lowestoft
Posts: 21
peter.green wrote:
Spooky got the same error, mine stopped a month after I bought mine last December then decided to work for a while in November packed up again last week. Was just about to order 2 new looms so I think you've saved me an expense, will watch with interest.
The looms were really easy to repair m8 , harder taking the bumpers and mud off
13th Dec 2018 11:20 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
Only way really is to have 2 fronts plugged in see if they are ok and plug another in etc.
14th Dec 2018 12:09 am
Glennyboy10
Member Since: 17 Oct 2018
Location: Lowestoft
Posts: 21
Ok so it should still work with only a couple plugged in ?
I'll give it a go and let you know what I find
14th Dec 2018 12:11 am
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
Did you change the CCF to rear only ?
Fronts won't work as such, just need to see if it knocks the rears out and/or generates the fault code in first post
14th Dec 2018 2:21 pm
Glennyboy10
Member Since: 17 Oct 2018
Location: Lowestoft
Posts: 21
Yes changed the ccf to rears only , so will activate fronts again so I can test them when I get round to it lol least the Mrs isn't scared of backing into stuff now 😂😂
14th Dec 2018 2:36 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
leave rears disabled. That should still do what you want.
You can tell, as soon as you plug the front loom in, the rears should stop.
Then you can mess around removing various front ones!
14th Dec 2018 3:04 pm
Glennyboy10
Member Since: 17 Oct 2018
Location: Lowestoft
Posts: 21
Spot on pal thanks 👍 will prob have a look the weekend see what I find , might disconnect my possessed drivers mirror aswell im fed up with adjusting it every time I get in lol
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