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Chris, Shop Foreman
Category: Jeep
Satisfied Customers: 3347
Experience:  Jeep Certified Master Tech
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2008 Jeep Liberty 3.7, code p0627 fuel pump control circuit

Customer Question

2008 Jeep Liberty 3.7, code p0627 fuel pump control circuit open?
Submitted: 8 months ago.
Category: Jeep
Expert:  bill replied 8 months ago.

i assume the jeep will not run

what have you done so far

Customer: replied 8 months ago.
No it will not. Sprayed starter fluid into throttle body and it did nothing just cranked over didn't even try to start
Expert:  bill replied 8 months ago.

what's your skill level if i send the diag procedure can you follow it fully?

you WILL need a good digital volt meter, test light and probably the necessary tools to remove the fuel tank and perform the tests required on the fuel pump

Expert:  bill replied 8 months ago.

also have you checked the fuses in the underhood fuse box?

there SHOULD be one for the fuel pump

Customer: replied 8 months ago.
Checked fuses fuse m21 was blown its marked asd #3 put a new fuse in it and ran. And yes we are a working shop.
Expert:  bill replied 8 months ago.

do you still need the procedure?

i will need the vin to pull the correct one

Customer: replied 8 months ago.
Did u see about blown fuse
Expert:  bill replied 8 months ago.

yes but the question would be WHY it blew, the ASD is also called the MAIN relay in Japanese cars and feeds quite a few different circuits including fuel pump on some models, O2 heaters and is the wake up for the pcm which is why starting fluid did nothing, the pcm wasn't "awake"

if you're confident the truck is fixed ship it and we are all set BUT i personally would hold the truck a day or so and drive it around just to be sure the fuse does not pop again