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Main Relay

  1. Turn ignition off. Remove main relay (located under left side of instrument panel) and disconnect electrical connector. Connect battery voltage to No. 4 terminal of relay and ground to No. 8 terminal of relay. Check continuity between terminals No. 5 and 7. If there is no continuity, replace main relay.
  2. Connect battery voltage to No. 5 terminal of relay. Connect No. 2 terminal of relay to ground. Check continuity between terminals No. 1 and 3. If there is no continuity, replace main relay.
  3. Connect battery voltage to terminal No. 3 of relay. Connect terminal No. 8 of relay to ground. Check continuity between terminals No. 5 and 7 of relay. If there is no continuity, replace main relay. If main relay is okay, but fuel pump still does not operate, proceed to MAIN RELAY HARNESS TESTING. See Fig 1 .
Fig 1: Main Relay Terminal Identification
G93521Courtesy of AMERICAN HONDA MOTOR CO., INC.
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