Multiple Errors On Dashboard, Dealer Traces It To Coolant Shutoff Valve alone?

[topher]

if the N82 cracks internally and lets coolant in to the electrics you can get all sorts of weird and wonderful faults cropping up. It's on a particular sensor reference voltage circuit from the ecu which will be shared across multiple sensors and actuators. Recently had a seat leon do exactly that which lead to a faulty throttle body and then the o2 sensor died shortly afterwards.

N82 has a two pin connector which further back goes into T14m (14 pin connector) which is one of the connectors in the TML location (under the battery/headlight area front right when looking at engine from front). From there it (N82 wires) only goes to the engine ECU

Can't find any wires for ABS unit connected to the T14m connector or that area at all!. So why is it bringing up ABS unit related error warning mesages???......FUBAR...

For some reason I can't view the entire PDF document so can't comment on the other faults that may have been present but anything that the drivetrain databus classifies as a missing message can prompt a dtc. Engine, gearbox, ABS and steering rack all on the same databus. The diagnostic setup on the MQB platform is notoriously sensitive. A few weeks ago I had to repair a MK7 R which produced 52 pages of fault codes all for a broken wire on the nsf level sensor and a faulty wiper stalk

[golfdave]

For some reason I can't view the entire PDF document so can't comment on the other faults that may have been present but anything that the drivetrain databus classifies as a missing message can prompt a dtc. Engine, gearbox, ABS and steering rack all on the same databus. The diagnostic setup on the MQB platform is notoriously sensitive. A few weeks ago I had to repair a MK7 R which produced 52 pages of fault codes all for a broken wire on the nsf level sensor and a faulty wiper stalk

Oh well looks like fun to sort problems then...anyway thanks for the info...

I'll return that with a link to the problems I had..well I knew the external temp sensor was bust...but unplugging it temporarily until I got a new one....Christ!!!! the car threw up warning lights on the dash like Christmas tree, & the engine fans stuck a max.... 8 different control module fault codes!!!.....I did a thread on Ross-tech here...enjoy..

http://forums.ross-tech.com/showthread.php?12542-WARNING-about-G17-Ambient-Temperature-Sensor-VW-Golf-MK7

[topher]

I remember reading that thread and saying to myself "bet his fans are blaring full speed with that unplugged" which you confirmed a few lines later

with the mk7's now coming out of their warranty period more and more of them are ending up at independant garages so i'm sure i've plenty more head scratching ahead of me, luckily ODIS is pretty good at highlighting root causes where other scan tools can send you off on wild goose chases. That being said vcds is still my "go-to" tool.