Check for continuity between the PGM-FI main relay 2 4P connector terminal No. 3 and ECM connector terminal E1. Is there continuity? YES - Go to step 9. NO - Repair open in the wire between the PGM-FI main relay 2 and the ECM (E1). Reinstall the PGM-FI main relay 2. Turn the ignition switch ON (II). Measure voltage between ECM connector terminal E1 and body ground. ECM CONNECTOR E (31P) Wire side of female terminals Is there battery voltage? YES - Go to step 12. NO - Replace the PGM-FI main relay 2. Turn the ignition switch OFF. Reconnect ECM connector E (31P).

Turn the ignition switch ON (II), and measure voltage between ECM connector terminal E1 and body ground within the first 2 seconds after the ignition switch was turned ON (II). ECM CONNECTOR E (31P) Wire side of female terminals Is there battery voltage? YES - Substitute a known-good ECM and recheck (see page 11-5). If symptom/indication goes away, replace the original ECM. NO - Go to step 15. Turn the ignition switch OFF. Remove the rear seat cushion, refer to the 2001 Civic 3-door Shop Manual (see page 20-40). Remove the access panel from the floor. Measure voltage between the fuel pump 5P connector terminal No. 5 and body ground within the first 2 seconds after the ignition switch was turned ON (II). FUEL PUMP 5P CONNECTOR Wire side of female terminals Is there battery voltage? YES - Go to step 24. NO - Go to step 19. aaa