Lift pump, relay, and fuse
08-23-2023, (Subject: Lift pump, relay, and fuse ) 
Post: #1
Lift pump, relay, and fuse
Hello, it has been awhile since I have been on the forum, also been awhile since I have been trucking. It is good to be back..

2012 Volvo, CM2250, 936K miles, (guru tuned at 600k).

Getting ready to hit the road in a few weeks, did a service, put the fuel filter on dry as usual. Usually cycle the key 6 times for the lift pump to fill the filter.. cycle the key, no lift pump noise.. pulled the pump and hooked it direct to a battery. Nothing, if it tap on it it will run just a bit but very weak.. so I know the pump is bad.. pulled the relay.. no voltage on pin 30 with key on..

Now the problem, I cannot for the life of me find the fuse that I hear controls voltage to the relay. I found one in the outside fuse panel that is for the NOX and it is ok..

Any ideas would be appreciated before I tear deeper into this wire harness.. does Volvo even use a fuse between the relay and the battery?

Thank you, JMBT


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Lift pump, relay, and fuse - JMBT - 08-23-2023



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