fuel pump new won't spin after 3 sitting months

1994 NISSAN PATHFINDER
200,000 MILES
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CMDSEAHORSE
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11 volts on brown wire at fuel pump (top or nearest front of car) 7 volts on 3rd wire (tan) and no voltage on 4th (blue w/ red stripe) nor second wire (brown) Fuel pump is a Bosch replacement unit- has 100 miles on new pump but has been in car for one year- pump makes no noise now after sitting for the summer (june through October 5,2013. Fuel tank is approx 1/3 full with fresh fuel . Would appreciate knowing what the wiring schematic shows for correct readings (volt,ohms ) will check fuses again and test this time with v-ohm meter. Suspect supply voltage not reaching pump -maybe connection down in tank is corroded or loose ????
Oct 5, 2013 at 1:36 PM
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HMAC300
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  • 48,601 POSTS
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our schematic shows white/blue for fuel pump which should be battery voltage or around that. we also show yellow green and yellow /purple for wires leading to pump that are the gauge and would be low voltage.if wires in pump are very sall it may have broken but check the blue/white wire for pump power.
Oct 5, 2013 at 1:52 PM
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