Circuit Diagram for '83 Quattro Coupe

[urq]

... from my review, the wiring diagram in the 4k/Coupe Bentley shown as
being for the 1984 model (pages 97.66-97.79) is actually for the 1983 model.
I believe there are other '83 ury owners who have confirmed this as well ...

I know that you say you don't have a Bentley, but perhaps there is someone
in your area that has one you can look at.  You might also want to check
Phil Payne's urq website ... sorry, I don't know the URL ...

CIS power ... not sure what you mean, but from pages 97.66-67 ... the FP
Relay gets power from terminal "H" (12mm Red), this goes via a T2 to the
relay ... the line going to the fuse is a G/Y ... with the color continuing
after the fuse to the Fuel Pump, Aux Air Reg and CPR.  Power to the ECU and
FP Relay coil comes from fusebox terminal A11 (12mm BK), and the spark coil
gets power from fusebox terminal C15 (16mm BK).  If your issue is that power
doesn't seem to be making it to the fuel pump ... look at the connector
under the rear seat near the battery ... this can get corroded and cause
issues with fuel pump operation.  A few ury owners have installed a relay
and fuse in this location as a load reduction relay ... you can't beat
getting power directly from the battery for the fuel pump.

Steve Buchholz
San Jose, CA (USA)


> I don't have a Bently for this car yet.  Does anyone have a scan, or
> link to the circuit diagram of '83 Ur Quattro.  My manuals only go back
> to 1984 with their diagrams.
>
> A similar one from pre-84 4000 may do too.  I am trying to identify
> power to the fuel pump, CIS etc.