Honda Fit/Jazz - Fuel Pump Circuit Troubleshooting (Without ETCS)
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Fuel Pump Circuit Troubleshooting
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:| 1. | Turn the ignition switch OFF. |
| 2. | Remove the fuse cover. |
| 3. | Remove PGM-FI main relay 2 (A) from the under-dash fuse/relay box. substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.n NO - Go to 16. |
| 16. | Turn the ignition switch OFF. |
| 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). Is there battery voltage? YES - Go to 25. NO - Go to 19. |
| 19. | Turn the ignition switch OFF. |
| 20. | Remove the fuse cover. |
| 21. | Remove PGM-FI main relay 2 (A) from the under-dash fuse/relay box. |
| 22. | Connect PGM-FI main relay 2 4P connector terminals No. 1 and No. 2 with a jumper wire. |
| 23. | Turn the ignition switch ON (II). |
| 24. | Measure voltage between fuel pump 5P connector terminal No. 5 and body ground within the first 2 seconds after the ignition switch was turned ON (II). Is there battery voltage? YES - Replace PGM-FI main relay 2.n NO - Repair open in the wire between PGM-FI main relay 2 and the fuel pump 5P connector.n |
| 25. | Turn the ignition switch OFF. |
| 26. | Check for continuity between fuel pump 5P connector terminal No. 4 and body ground. Is there continuity? YES - Replace the fuel pump.n NO - Repair open in the wire between the fuel pump 5P connector and G402.n |
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