TwinTurbo.NET: Nissan 300ZX forum - No power at fuel pump
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Subject No power at fuel pump
     
Posted by hunterg on October 21, 2016 at 11:34 AM
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Message Looking for suggestions on what to check. The project is an early 90 NA 2+2 Auto to Manual TT conversion. The problem is no power to the fuel pump.

I've checked the fuel pump relay and fuse by the battery. Using a multi meter at the fuel pump bulkhead, I have tested for power on the chassis side of the bulkhead connector.

The following wires are on the chassis side of the connector- 2 x orange, 2 x black, 1 white, 1 blue. I get 12v on the small blue wire and 6v on the smaller of the two orange wires.

The larger of the two orange wires seems to feed the positive wire for the pump(I checked this by pulling the pump)

I am also getting no power from any of the terminals on the connector going into the FPCU. These tests were done with a good battery with the key in the on position.

Any suggestions on what else to check?

     
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