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Home >> Acura >> 1990 >> Integra LS, 2D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Relays & Solenoids >> Fuel Pump Main Relay
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Fuel Pump Main Relay

  1. Remove fuel pump main relay located near under-dash fuse box. Using a jumper from a 12-volt battery power source, connect battery voltage to terminal No. 4 and ground to terminal No. 8 of main relay. See Fig 1 .
  2. Check continuity between main relay terminals No. 5 and 7. If continuity exists, go to step 3). If continuity does not exist, replace fuel pump main relay.
  3. Connect battery positive to main relay terminal No. 5 and battery negative to terminal No. 2. Check continuity between terminals No. 1 and 3 of fuel pump main relay. If continuity exists, go to step 4). If not, replace fuel pump main relay.
  4. Connect battery positive to main relay terminal No. 3 and battery negative to terminal No. 8. Check continuity between terminals No. 5 and 7 of fuel pump main relay. If continuity exists, main relay is okay. If continuity is NOT present, replace fuel pump main relay.
    Fig 1: Fuel Pump Main Relay Terminals
    G93521Courtesy of AMERICAN HONDA MOTOR CO., INC.
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