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Home >> Honda >> 1992 >> Prelude Si, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Relays & Solenoids >> Fuel Pump Main Relay

Fuel Pump Main Relay

  1. If vehicle starts and continues to run, relay is okay. To test, remove main relay, located under left side of dash. Using jumper wires, connect battery voltage to No. 6 terminal and ground No. 8 terminal of main relay. See Fig 1.
  2. Using an ohmmeter, check continuity between main relay terminals No. 5 and 7. If continuity exists, go to step 3). If continuity does not exist, replace main relay.
  3. Connect battery voltage to main relay terminal No. 5 and ground terminal No. 2. Check continuity between terminals No. 1 and 3 of main relay. If continuity exists, go to next step. If continuity does not exist, replace main relay.
  4. Connect battery voltage to main relay terminal No. 3 and ground terminal No. 8. Check continuity between terminals No. 5 and 7 of main relay. If no continuity exists, replace main relay. If continuity exists, main relay is okay. If fuel pump still fails to operate, test main relay harness. See FUEL PUMP MAIN RELAY HARNESS  under FUEL SYSTEM.
    Fig 1: Fuel Pump Main Relay Terminal ID
    G90C17147Courtesy of AMERICAN HONDA MOTOR CO., INC.
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