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Home >> Honda >> 2000 >> Civic GX, Automatic, B4RA >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Supply System (GX) >> PGM-FI Main Relay >> Relay Testing

Relay Testing

NOTE:
  • If the engine starts and continues to run, the PGM-FI main relay is OK.
  • Use the terminal numbers below; ignore the terminal numbers molded into the relay.
  1. Remove the PGM-FI main relay.
  2. Attach the battery positive terminal to the No. 2 terminal and the battery negative terminal to the No. 1 terminal of the PGM-FI main relay. Then check for continuity between the No. 5 terminal and No. 4 terminal of the PGM-FI main relay.
    • If there is continuity, go on to step 3.
    • If there is no continuity, replace the PGM-FI main relay and retest.
    Fig 1: Attaching Battery Positive Terminal To No. 2 Terminal & Battery Negative Terminal To No. 1 Terminal Of PGM-FI Main Relay
    G02511002Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Attach the battery positive terminal to the No. 5 terminal and the battery negative terminal to the No. 3 terminal of the PGM-FI main relay. Then check that there is continuity between the No. 7 terminal and No. 6 terminal of the PGM-FI main relay.
    • If there is continuity, go on to step 4.
    • If there is no continuity, replace the PGM-FI main relay and retest.
  4. Attach the battery positive terminal to the No. 6 terminal and the battery negative terminal to the No. 1 terminal of the PGM-FI main relay. Then check that there is continuity between the No. 5 terminal and No. 4 terminal of the PGM-FI main relay.
    • If there is continuity, the PGM-FI main relay is OK. If the fuel injector relay, fuel pressure regulator shut-off solenoid valve and fuel tank internal solenoid valve still do not work, go to Harness Testing on the next page.
    • If there is no continuity, replace the PGM-FI main relay and retest.
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