If you suspect a problem with the fuel pump, check that the fuel pump actually runs; when it is ON, you will hear some noise if you listen to the fuel fill port with the fuel fill cap removed. The fuel pump should run for 2 seconds when the ignition switch is first turned on. If the fuel pump does not make noise, check as follows:
- Turn the ignition switch OFF.
- Remove the glove box (see page 20-220), then remove the PGM-FI main relay 2 (A).
- Turn the ignition switch ON (II).
- Measure voltage between the PGM-FI main relay 2 4P connector terminal No. 4 and body ground.
Wire side of female terminals
Is there battery voltage?
YES |
- Go to step 5. |
NO |
- Repair open in the wire between the PGM-FI main relay 1 and the PGM-FI main relay 2. |
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- Measure voltage between the PGM-FI main relay 2 4P connector terminal No. 1 and body ground.
Wire side of female terminals
Is there battery voltage?
YES |
- Go to step 6. |
NO |
- Repair open in the wire between the under-dash fuse/relay box and PGM-FI main relay 2. |
- Turn the ignition switch OFF.
- Disconnect ECM/PCM connector E (31P).
- Check for continuity between the PGM-FI main relay 2 4P connector terminal No. 3 and ECM/PCM connector terminal 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 (E1). |
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