## Fuel Supply System

#### Fuel Pump Circuit Troubleshooting (cont'd)

11-428

9. Reinstall the PGM-FI main relay 2.

10. Turn the ignition switch ON (II).
11. Measure voltage between ECM/PCM connector terminal 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.

12. Turn the ignition switch OFF.
13. Reconnect ECM/PCM connector E (31P).
14. Turn the ignition switch ON (II), and measure voltage between ECM/PCM connector terminal 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 (see page 11-313). If symptom/indication goes away, replace the original ECM/PCM.
NO | - Go to step 15.

15. Turn the ignition switch OFF.

16. Remove the rear seat cushion (see page 20-237).
17. Remove the access panel from the floor.
18. 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.

19. Turn the ignition switch OFF.
20. Remove the PGM-FI main relay 2.