[V8] Cold-Feet Update: HVAC reports code-09 on channel 01

[Ingo Rautenberg]

I think that's the same one that I (and others) have replaced.  Maybe as
simple as not plugged in ;-) ?  Anyhow, that culprit would be the one just
below and next to the pass side distributor.  Cheap (Audiwise) part.  Picked
up a replacement from Murray's (special-ordered, but got next day.  May
(should) also show up as ECU fault code (2312).  Audi PN# 035 919 369 M or
GP Sorensen 38-5104 from your local auto parts store (under $25).
----- Original Message ----- 
From: <robert_a_dupree at bankone.com>
To: <V8 at Audifans.com>
Sent: Monday, January 24, 2005 4:31 PM
Subject: [V8] Cold-Feet Update: HVAC reports code-09 on channel 01


> If I read CJ Miller's site correctly, and IF it applies to the 1990 V8
> then it would appear I have an open coolant temp sensor circuit.
> This having been the melted-harness car, I had to do tons of wiring work
> so possibly I missed hooking it up.
>
> Questions:
> 1.  Can someone confirm that code-9 on channel-1 points to a bad coolant
> temp sensor circuit?
>
> 2.  Can someone articulate where on the car that sensor is, and where it
> goes to in the car so I can check continuity and the sender itself?
>
> 3.  Theorize on whether or not a bad coolant temp sensor would prevent the
> heater valve from opening?
>
> Robert A. Dupree
>       Investment Bank Technology, Chicago - MarketData & ECN Project Team
>       JPMorganChase & Co.
>          312-325-3587 desk
>
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