Advice please - electrical issues

[Twodogs]

Hi

I have a T25 Westy hitop fitted with a 1.9 tdi AFN - a Tim Shettle conversion in 2012.

I am having problems starting the van and when I connect a ODBii code scanner there is an error making the link.

There is also something drinking the battery, although I have th van checked out by Sparks autoelectricians in Bristol and they could not find anything.

Any advice really appreciated.

Thanks

Ian

[randolph57]

First point -Tim is still trading so might be the first point to start at especially as you are so close?
However:- I believe the OBDii port will have originally have been connected in the dash area probably around the cold start pull especially as the immobiliser transponder ring and associated 'box' will have been fitted there. There should then be a cable (look for a speaker type cable) running front to back to the ECU connection(K-line and immobiliser i think)-Its possible this has become degraded/detached under the van so no information can be read at the OBD port-does the van start and then stop after 1 second or so?
If this is the case the immobiliser is operating and may also be because the'chip' has been dislodged from the key although both would throw a fault code(if it could be read).

Battery drain can be narrowed down by placing a fluke or similar that reads current between the earth lead and battery negative post-any current draw is immediately obvious and relevant circuit can be determined by removing fuses until current reading tails down to near zero.

Again Tim would be the ideal place to start and I'm sure Syncroandy will put all the above waffle into 'electospeak'

[syncroandy]

Cheers ! However from the description I'd say eliminating any possible low-battery voltage would be the starting point. Does the engine crank strongly but refuse to start, or is cranking weak ? If it was installed by Tim I'd assume he'd be happy to field enquiries in the first instance.

[Twodogs]

Thanks guys, I sent Tim an email and he is on holiday until next week.

Hopefully once he's back I can get the van sorted fairly quickly.