diagnosis help

[feelstranger]

Folks, wire diagram indicates ECU is grounded at ground point 137, and 138, 
which are both "welded in motronic harness" -  Are these the grounds 
connected to the intake mani just above the FPR?


-----Original Message----- 
From: Nathaniel Merrill
Sent: Wednesday, February 08, 2012 8:35 PM
To: 200q20v at audifans.com
Subject: RE: diagnosis help


More tests -
Ground at hall connector shows 0 resistance to ground.
Wires between hall connector and ecu test OK (0.5 Ohm)

Voltage between pins 1 and 3 (ground, and +) is only about 3 V, where it is 
supposed to be 4.5 - 5.5.
Not sure what to think about that.  Bentley indicates "replace ECU"...
Need a test LED to see if a hall signal is getting though to ECU.

Car is starting regularly, but CEL still lighting.

Drive it to work, and take a chance?
Hmmm..


> From: feelstranger at hotmail.com
> To: 200q20v at audifans.com
> Subject: RE: diagnosis help
> Date: Wed, 8 Feb 2012 16:34:04 -0500
>
>
> Yes, cleared codes before test drive.  Seems like crank sensors are not 
> relevant since it runs fine as long as it starts.
>
>
>
> > Date: Wed, 8 Feb 2012 13:24:14 -0800
> > From: stincalise at yahoo.com
> > Subject: Re: diagnosis help
> > To: 200q20v at audifans.com
> >
> > Nat, did you clear the fault codes and it came back? I'd have a look at 
> > the crank sensors while you're at it. Dizzy timing mark could be off 
> > just a tick too.
> >
> >
> >  Austin
> > _______________________________________________
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>
> _______________________________________________
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