[Cferry]

I tried code 40 and for a while it cleared both ASR and abs lights. No codes then went for a drive, parked up, cycled the ignition and it came back. Must be an electrical fault somewhere or loom.
I've learned that any code for AWD such as 27 or 28 for AWD transporter puts off the ASR light but it's always looking for that non existent AWD module.
Really confusing this one

 

[Cferry]

Not sure what's up, gonna get the owner to try the dealer to see if they can program it. Surely about an hour's charge or so. At least if they can't do it based on the vin or whatever then he can conclude the unit is faulty . Thanks for your help. I appreciate it all

 

[T5 TDI]

Just a thought, you haven't got odd sized wheels or tyres fitted have you? I don't think this can be a wiring problem. It keeps changing with different codings which is not how any wiring faults manifest themselves. According to Ross-Tech the ABS, the cluster and the engine ECU all have to have matching VIN numbers (I don't think the pump does on our vans) but as Triffic was saying, if the the cluster (or the engine ECU) has been changed and the VIN hasn't been updated the codings won't work. You can read how to check it using Advanced Measuring Blocks here.

I've seen the VIN in the engine ECU and in the cluster but AFAIK there is no facility to add it to a new or second hand pump of our vintage. Worth a check before you pay a dealer (to probably tell you need a new pump when you don't!)

 

[Cferry]

Hi,
Thanks for the suggestions, it has the original steel wheels on it.
However the owner has let me know that the cluster wasn't changed and that there was a loom issue that was repaired so I'm not sure if that was properly fixed or not and the abs unit was changed at the same time.
apparently it was never right.
Not sure what to think if there were issues but I'd say verifying the wiring is ok is a start, but not a job for me.
Thanks for the help, I appreciate it

 

[Cferry]

I'd have thought being an ASR model that it would have this fitted: VW TRANSPORTER T5 ABS PUMP 7H0907379G / 7H0614111G TESTED | eBay

 

[T5 TDI]

Not sure what year the G suffix is for but 7Zap shows S or P for the non-ESP 2007 version . The 375 (instead of 379) part number is the controller only without the pump. But the last letter is the same in both cases.

 

[Cferry]

Ok yes that makes sense, the one in the t5 here is likely correct then. Really strange how it worked for a while though, as in both ASR and abs lights were off. The ASR button even functioned at the time.
I also don't get why it was going out of range for the coding that was on the long coding helper, I think it was supposed to be 552. Ticking the boxes in the coding menu results in the code saying it's out of range.

 

[T5 TDI]

Can you check what the code is now in case it's different. It's possible that you now just have an individual ABS sensor code or something else. I have sometimes fitted new ABS sensors and other parts only for the code to come straight back and need to be cleared once again. Don't forget to look at the other controllers (especially the engine) for related fault codes.

I've read in the past that if the WSC (Work Shop Code) in the pump controller is set to all zeros, occasionally that can cause problems. I don't think it's that common but you could change it if it is. Not an easy one! Good luck.

 

[Cferry]

I did actually read about the holy trinity it vins but I did check the cluster and that was correct.
I did tell the owner to ask the dealer before they go to them to focus on programming the abs pump and make sure it's integrated properly and to leave it if they want to change the wiring loom and or pump.

 

[pmg11]

Did you get this problem sorted ? Did you find the correct coding?