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Old 01-19-2016, 02:56 PM   #3
DrewP's Avatar
Join Date: Dec 2006
Location: Los Angeles, CA
Posts: 3,021
Is the fuse good and is there power at the relay? If you jump the relay does the pump run?

The fuel pump relay is controlled through TWICE and the ECM. If TWICE receives the correct immobilizer code then it gives ECM permission to close the fuel pump relay to run the pump.

You can see this and activate the pump with a Tech2.

Your mechanic has a wiring diagram, yes?
(Former) Saab Tech / Competition Prep

You still don't understand. This is like trying to explain calculus to a clam.
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