Checking Fuel Pump Operation (Without Scan Tool)

Remove interior trim. Remove access panel from floor. Turn ignition off and disconnect fuel pump 2-pin electrical connector (C566). Locate PGM-FI main relay 7-pin connector (C425) behind left side of dash, on bracket. See ELECTRICAL COMPONENT LOCATOR article. Using a jumper wire, connect PGM-FI main relay terminals No. 4 (Yellow/Green wire) and No. 5 (Black/Yellow wire) together. See Fig 1 .
Turn ignition on. Using DVOM, measure voltage between body ground and fuel pump 2-pin electrical connector terminal No. 2 (Yellow/Green wire). See WIRING DIAGRAMS article. If battery voltage is available, check fuel pump ground circuit. If ground circuit is okay, replace fuel pump. See REMOVE/INSTALL/OVERHAUL article. If battery voltage is not available, check wiring harness between PGM-FI main relay and fuel pump harness connector. See WIRING DIAGRAMS article.

Fig 1: Identifying PGM-FI Main Relay Harness Connector Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.