Re: Possibe cause; damage to ECU (Vagelis)
I've posted this at the VW-A4-18T group.
This is my situation. I sent out what was supposedly a new ECU to get
chipped. Did the adaptation routine, activated cruise control, re-
coded wsc. Car runs fine 'cept for DTC 17972 Idle Speed Contr.
Throttle Pos. Low Voltage During Adaptation-Intermittent. I can clear
the code with the ignition on, but cannot clear with engine running.
I also get DTC 17977 j45 implausible signal Criuse control is toast.
Now I'm thinking bad ECU because I put my original and no DTC 17972
just DTC 17977 toasted cruise. Then I remember that got some exhaust
work done and the guy tack welded on my car. But I saw he had the
batttery disconnected, but not sure if he disconnected before welding
or to put the new ECU in. I'm trying to get my facts straight so I
can plan my next steps to figure this mess out.
thanks for your help,