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Home >> Acura >> 1997 >> 3.5RL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Fuel System >> PGM-FI Main Relay
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PGM-FI Main Relay

NOTE: If engine starts and continues to operate, PGM-FI main relay okay. If engine does not start and PGM-FI main relay is okay, check fuel pump relay (FUEL PUMP RELAY ) and fuel pump resistor (FUEL PUMP RESISTOR ).
  1. Remove PGM-FI main relay, located under left side of instrument panel. Connect battery voltage to relay terminal No. 4. Connect terminal No. 8 to ground. See Fig 1.
  2. Test for continuity between relay terminals No. 5 and No. 7. If continuity exists, go to next step. If continuity does not exist, replace relay.
  3. Connect battery voltage to relay terminal No. 6. Connect terminal No. 2 to ground. Test for continuity between relay terminals No. 1 and No. 3. If continuity exists, go to next step. If continuity does not exist, replace relay.
  4. Connect battery voltage to relay terminal No. 3. Connect terminal No. 8 to ground. Test for continuity between relay terminals No. 5 and No. 7. If continuity exists, relay is okay. If continuity does not exist, replace relay.
    Fig 1: Identifying PGM-FI Relay Terminals
    G96B01359Courtesy of AMERICAN HONDA MOTOR CO., INC.
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