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Fuel Pump Relay

  1. Remove fuel pump relay from relay board. Turn ignition on. Using multimeter, measure voltage at following relay board sockets: between terminal No. 2 and ground, between terminals No. 2 and 1 and between terminals No. 4 and 1. Reading should be battery voltage or slightly less.
    NOTE: No testing procedure was available for Quantum or Quantum Syncro.
  2. If reading is low or zero, check wiring. Refer to appropriate WIRING DIAGRAM in this article to check circuits. Measure voltage between relay board sockets No. 5 and 1. Battery voltage should be present. If reading is correct, ground middle wire of ignition distributor connector.
  3. Voltage reading should drop for short time. If reading does drop, replace fuel pump relay and check Hall sender. If reading does not drop, check Hall ignition ECU.
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