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-   -   Dead Scooby - No Power to Fuel Pump (https://www.scoobynet.com/general-technical-10/621322-dead-scooby-no-power-to-fuel-pump.html)

Mike Molloy 15 July 2007 08:50 PM

Dead Scooby - No Power to Fuel Pump
 
Car died on Saturday, no warning, just ground to a halt. Mr nice RAC man diagnosed no power to the fuel pump (Black/Yellow wire to the connector under the rear seat).
Tried a bit of diagnosis today..
Found what i think is the fuel pump relay under the dash (by driver's right knee).
Green connector, wires:
Black/red (permanent 12V),
Black/Yellow (looks like it has been cut and soldered to a black wire that I suspect is part of the immobiliser/alarm),
Green/red (+12V Ignition),
Green/black (0V for 3s after Ign On, then goes to 12v so relay disconnects).

Anyhow, there is no power getting to the fuel pump Black/yellow wire so I think something in the security system has crapped out.
The Subaru branded alarm (Sigma M30) was fitted in the UK to make the car Thatcham Cat 1 compliant.

Can anybody describe the function of the green/black wire to the FP relay, plus how the alarm is hooked into the system? I know it performs a crank disable, but does it also splice into the FP feed?
Please PM if this info is "top secret"!


Car is a 99MY UK turbo.
Thanks!


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