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Home >> Infiniti >> 1995 >> Q45 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests 4.5L >> Fuel System >> Fuel Delivery >> Fuel Pump Control Unit
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Fuel Pump Control Unit

  1. Disconnect fuel pump control unit connector, located above fuel tank at rear of vehicle. Install 3 jumper wires from unit side of harness, terminals No. 5, 6 and 7, to ECM side of harness, terminals "e", "f" and "g", respectively. See Fig 1 .
  2. Connect one, then 2 and finally 3 jumper wires as indicated in illustration. Using a DVOM, check voltage between terminals No. 4 and 7 as each jumper wire is connected. See Fig 1 . If voltage readings are not as indicated, replace fuel pump control unit.
Fig 1: Testing Fuel Pump Control Unit (Q45)
G90E15226Courtesy of NISSAN MOTOR CO., U.S.A.