I'll throw an additional curve ball out there: If you pressurize the fuel feed into the lift pump, you can push fuel across the seals in the immobilizer valve and it will literally leak out of the electrical connection.

It did on mine when I tried it.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250