Fuel Injector Operation Inspection
FUEL INJECTOR OPERATION INSPECTION
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | While cranking engine, inspect for fuel injector operation sound at each cylinder using a soundscope. Is operation sound heard? |
Yes | Fuel injector operation is okay. |
| No | Not heard in any cylinders: Go to the next step. Heard in some cylinders: Go to Step 3. |
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| 2 | Perform main relay operation inspection. Is main relay operation normal? |
Yes | Inspect the following:
|
| No | Repair or replace malfunctioning parts. | ||
| 3 | Change fuel injector connector of not operating fuel injector and operating fuel injector. Is operation sound heard? | Yes | Go to the next step. |
| No | Replace fuel injector. | ||
| 4 | Are wiring harness and connectors of not operation fuel injector okay? (Open or short circuit | Yes | Inspect PCM terminal voltage of fuel injector signal. |
| No | Repair or replace malfunctioning parts. |