Check for continuity between the PGM-FI main relay 2 4P connector terminal No. 3 and ECM/PCM connector terminal E10 (E1)*. Wire side of female terminals Is there continuity? YES - Go to step 9. NO - Repair open in the wire between the PGM-FI main relay 2 and the ECM/PCM (E10, E1*). Reinstall the PGM-FI main relay 2. Turn the ignition switch ON (II). Measure voltage between ECM/PCM connector terminal E10 (E1*) and body ground. ECM/PCM 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/PCM connector E (31P).

Turn the ignition switch ON (II), and measure voltage between ECM/PCM connector terminal E10 (E1*) and body ground within the first 2 seconds after the ignition switch was turned ON (II). ECM/PCM CONNECTOR E (31P) Wire side of female terminals Is there battery voltage? YES - Substitute a known-good ECM/PCM and recheck. If symptom/indication goes away, replace the original ECM/PCM. NO - Go to step 15. Turn the ignition switch OFF. Remove the rear seat cushion (see page 20-95). Remove the access panel from the floor.