Honda Fit/Jazz - Fuel Pump Circuit Troubleshooting (L15A)
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.
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2. | Remove the driver's side under cover.
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3. | Remove the relay holder (A) from the under-dash fuse/relay box, and remove the PGM-FI main relay 2 (blue) (B) from the relay holder (A), after reinstall the relay holder (A) to the under-dash fuse/relay box. then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.n
NO - Go to 16.
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16. | Turn the ignition switch OFF.
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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).
Is there battery voltage?
YES - Go to 25.
NO - Go to 19.
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19. | Turn the ignition switch OFF.
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20. | Remove the driver's side under cover.
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21. | Remove the relay holder (A) from the under-dash fuse/relay box, and remove the PGM-FI main relay 2 (blue) (B) from the relay holder (A), after reinstall the relay holder (A) to the under-dash fuse/relay box.
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22. | Connect the PGM-FI main relay 2 4P connector terminals No. 1 and No. 2 with a jumper wire.
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23. | Turn the ignition switch ON (II).
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24. | 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 - Replace the PGM-FI main relay 2.n
NO - Repair open in the wire between the PGM-FI main relay 2 and the fuel pump 5P connector.n
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25. | Turn the ignition switch OFF.
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26. | Check for continuity between the 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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Honda Fit/Jazz 02-05 Workshop Manual
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