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cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 3694
Experience:  All types of Cummins applications
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Dr.Cummins we have found I have 12 volts on the connector at

Customer Question

Dr.Cummins we have found I have 12 volts on the connector at the pump but as soon as I hook it to the pump it drops to 10.4 volts. and what voltage should I have at the fuel shut off wire #5 on a vp44 coming out of the ecm
Submitted: 2 years ago.
Category: Medium and Heavy Trucks
Expert:  supertech52 replied 2 years ago.

I can help if you please give me the engine serial number.

Expert:  cumminsdr replied 2 years ago.
Hello and welcome to Just Answer! I would be more than happy to assist you today.Hi Thanks for the request Normal engine operation is as follows:
0-VDC at pin 5 at keyswitch ON
12-VDC at pin 5 at keyswitch OFF, until ECM powers down.
Check for a short circuit in the wiring harness, bad connectors, or high voltage at engine harness pin 5 on the pump end at keyswitch ON.