MK4 new CCM double-locking, unlocking

   #1  

Argh

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I replaced the OEM CCM with a third-party CCM. 2002 Jetta Wagon 1.8T. Identical part numbers, and circuit board layouts & components are, at a glance, the same.

Here are my problems. Thanks in advance for any assistance, ideas, links to solutions or next steps:
1. I changed coding from 00259 to 00258 to match the OEM, but with one push on the remote, it still unlocks all four doors instead of just the driver door. (Scan says 00259 below because I did the scan before changing that.)
2. When locking or unlocking with the remote, pushing the button ONCE, it double locks and unlocks. For example, when locking, the alarm LED on the driver door goes on, and all four lock buttons go down, and then they energize again and click even though the buttons are already down.
3. I am getting "Implausible Signal" faults from all four doors.

I'm guessing all of these things are related.

Why I replaced the CCM: Tyco v23072-c1059-a208 light relay got stuck with the right signals lit. A common enough problem, apparently. If I'd been able to simply solder in a new relay for a reasonable price, I would have done that. But with shipping, minimum order of five new relays were only $15 less than a whole new CCM. So, I replaced it with a third party module. I could put the OEM unit back in to re-scan it, or for other troubleshooting.

Code:
Wednesday,13,January,2021,20:22:36:36947
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 20.12.0.1 (x64)  HEX-V2 CB: 0.4529.4
Data version: 20201125 DS322.1
www.Ross-Tech.com

Dealer/Shop Name: 

VIN: WVWSE61J02W135xxx   License Plate: 


Chassis Type: 1J (1J - VW Golf/Bora IV (1998 > 2006))
Scan: 01 02 03 08 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57 75
          76
 
VIN: WVWSE61J02W135xxx   Mileage: 307650km-191164miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 06A-906-032-AWP.lbl
   Part No: 06A 906 032 HS
   Component: 1.8L R4/5VT     G   0006  
   Coding: 07500
   Shop #: WSC 00000  
   VCID: 76B5E1DEF1DE388B59E-5184
   WVWSE61J02W135xxx     VWZ7Z0A3795595

No fault code found.
Readiness: 0110 1101

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 1C0-907-37x-ASR.lbl
   Part No: 1C0 907 379 D
   Component: ASR FRONT MK60      0103  
   Coding: 0018945
   Shop #: WSC 01317 785 00200
   VCID: 2B0300AA7F1C3563F60-5184

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl
   Part No: 6Q0 909 605 F
   Component: 03 AIRBAG VW6  0202 0004  
   Coding: 12339
   Shop #: WSC 01317  
   VCID: 3A2D35EE85469CEB7D6-5160

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 1J0-920-xx5-17.lbl
   Part No: 1J0 920 906 J
   Component: KOMBI+WEGFAHRSP VDO V65  
   Coding: 07232
   Shop #: WSC 02615  
   VCID: 2F3B14BA4E044943DA8-5160
   WVWSE61J02W135xxx     VWZ7Z0A3795595

2 Faults Found:
00771 - Fuel Level Sensor (G) 
            30-10 - Open or Short to Plus - Intermittent
01176 - Key 
            07-10 - Signal too Low - Intermittent

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
   Part No: 6N0 909 901 
   Component: Gateway K<->CAN    0001  
   Coding: 00006
   Shop #: WSC 00000  
   VCID: 70B9D7C693BA16BB832-5160

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 1C0-959-799.lbl
   Part No: 1C0 959 799 C
   Component:    Komfortgerát HLO 0004  
   Coding: 00259
   Shop #: WSC 00222  
   VCID: 372B2CDAB6548183828-4B1E

   Subsystem 1 - Part No: 1C1959801A
   Component: 1G Tõrsteuer.FS KLO 0003  

   Subsystem 2 - Part No: 1C1959802A
   Component: 1G Tõrsteuer.BF KLO 0002  

   Subsystem 3 - Part No: 1C0959811A
   Component: 1G Tõrsteuer.HL KLO 0002  

   Subsystem 4 - Part No: 1C0959812A
   Component: 1G Tõrsteuer.HR KLO 0002  

4 Faults Found:
00928 - Locking Module for Central Locking; Front Driver Side (F220) 
            27-00 - Implausible Signal
00929 - Locking Module for Central Locking; Front Passenger Side (F221) 
            27-00 - Implausible Signal
00930 - Locking Module for Central Locking; Rear Left (F222) 
            27-00 - Implausible Signal
00931 - Locking Module for Central Locking; Rear Right (F223) 
            27-00 - Implausible Signal

End----------(Elapsed Time: 05:04, VBatt start/end: 14.4V/14.3V)-----------
 
   #2  

Jef

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I replaced the OEM CCM with a third-party CCM.

Address 46: Central Conv. Labels: 1C0-959-799.lbl
Part No: 1C0 959 799 C
Component: Komfortgerát HLO 0004
Coding: 00259

Well, that might be a big part of the issue. There are MANY different versions of part number 1C0-959-799-C. They have a hidden bit of the part number, referred to as a "color code". Taking a look at the CCM's Component field, it is missing data. For the VAG number installed, there should be a 2 digit code at the start of it, this does not have such value. Here is a healthy example:

Address 46: Central Conv. Labels: 1C0-959-799.lbl
Part No: 1C0 959 799 C
Component: 8A Komfortgerát HLO 0004
Coding: 00258

Notice the "8A" there at the start of the Component field. There are several variations of what one might find.

To make this long answer shorter, the CCM and door control modules need to be on the same page in how they are going to communicate with each other. It seems the aftermarket CCM is not in agreement with the door modules and well, it boils down to a 5.0mm square peg that you are trying to hammer into a 4.8mm square hole. At arms length it looks to be a good match, but no matter how much you hammer away with it using VCDS, I don't seeing fitting.

Scan the original CCM. Also, your VIN is got xxx in it.... any reason why? I'll show you my VIN if you show me yours.... :eek:
 
   #3  

Argh

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Thanks for the prompt reply. Below is the scan snippet with the original CCM, showing 1G prefix on the component line.

Looking online at OEM parts, maybe the 1G is the suffix on this linked part? https://www.myvwpart.com/p/Volkswagen__/CONTOUR-Unit/51817104/1C0959799C08A.html

So it would seem, there is a hardware or firmware difference between these units, that cannot be field configured. Thanks VW!

Any options besides -
1-buying five relays for $75 from some online opportunist
2-finding a used matching OEM unit with a good relay (I didn't even consider used, because I figured the relay would have the same issue.)
3-desoldering the relay from the new CCM and putting it on the old CCM
?

Regarding the VIN, are you saying it's relevant to the topic at hand? I suppose a dealer would use it to determine the Component value.

Code:
-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 1C0-959-799.lbl
   Part No: 1C0 959 799 C
   Component: 1G Komfortgerát HLO 0003  
   Coding: 00258
   Shop #: WSC 01317  
   VCID: 372B2CDAB654818F38D-4B1E

   Subsystem 1 - Part No: 1C1959801A
   Component: 1G Tõrsteuer.FS KLO 0003  

   Subsystem 2 - Part No: 1C1959802A
   Component: 1G Tõrsteuer.BF KLO 0002  

   Subsystem 3 - Part No: 1C0959811A
   Component: 1G Tõrsteuer.HL KLO 0002  

   Subsystem 4 - Part No: 1C0959812A
   Component: 1G Tõrsteuer.HR KLO 0002  

No fault code found.

End----------(Elapsed Time: 05:06, VBatt start/end: 11.7V/12.0V)-----------
 
   #4  

Argh

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Side by side, OEM on the left, the one I bought on the right.
ccm-IMG-8980.jpg
 
   #5  

Jef

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The 1G is the color code, so in real nerd terms, the original part number is 1C0-959-799-AC-01G or maybe /01G. At any rate, the true PITA with all this.... where da ph*c is "1G" on the CMM case?:banghead:

Going with a good used CCM is fine and all, but you can't tell what the color code is until you plug it up and scan it.... so... fun times ahead. Some minor good news, it looks like the 1G got superseded to 8A, so it seems you have 2 color code options that you can go with.

There is no valid reason to block out a VIN unless you are driving around in a stolen car. Your VIN is clearly on display at the base of the windshield anyway for the last 19 years. The parts catalog that several of us have access there to lets you narrow things down based on the VIN, but when you hid it for reasons unknown.... well, the fog of war.

If this is just relay issue, and you have decent soldering skills, then swap the relay over.:thumbs:
 
   #6  

Argh

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At any rate, the true PITA with all this.... where da ph*c is "1G" on the CMM case?:banghead:
Thanks, I feel validated. We could speculate endlessly about why, but the answer likely lies with people who have signed NDAs.

Going with a good used CCM is fine and all, but you can't tell what the color code is until you plug it up and scan it.... so... fun times ahead. Some minor good news, it looks like the 1G got superseded to 8A, so it seems you have 2 color code options that you can go with.
Right, unless someone were specializing in used VW CCMs ... no, I haven't found any on eBay showing the "Color Code." For the price of OEM, not a reasonable option for this car, which is still fun to drive, but spends most of its retirement on a battery maintainer.

There is no valid reason to block out a VIN unless you are driving around in a stolen car. Your VIN is clearly on display at the base of the windshield anyway for the last 19 years. The parts catalog that several of us have access there to lets you narrow things down based on the VIN, but when you hid it for reasons unknown.... well, the fog of war.
I see your point, but I'd argue that my address and various other personally identifiable info are in public records or viewable in public, and that does not mean I want them searchable online in a way that allows people like me to casually correlate them with other public or purchased records. I fully realize that anyone with enough time and money can find me, but I don't want to make it easy. And just to be sporting, the last 3 digits are 869 (Oh hang on, somebody's knocking at my front door :D )

If this is just relay issue, and you have decent soldering skills, then swap the relay over.:thumbs:
As it turns out, having the relay part # from the aftermarket CCM also gives me some more options. The classic 53-cent part that costs $27 to ship! It seems no one in the US is interested in selling these online, but I can have a few shipped from China in a week or two for a (less) usurious price.

Thanks again!
 
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