Fuel System Inspection

Fuel System Inspection


1. Fuel pump inspection
Remove fuel filler cap and push engine switch to change ignition mode to "ON".
Confirm that fuel pump operating sound can be heard from fuel filler port for about 2 seconds before stopping.
Is it in good condition?
YES
Go to Step 2.
NO
Check fuel pump circuit. Fuel Pump and Its Circuit Check
2. Fuel pressure check
Check fuel pressure. Fuel Pressure Check
Is it in good condition?
YES
Go to Step 3.
NO
Repair defective part.
3. Power balance test
Check power balance. Power Balance Test
Is it in good condition?
YES
Fuel system is in good condition.
NO
Go to Step 4.
4. Fuel injector circuit check
Check fuel injector circuit. Fuel Injector Circuit Check
Is it in good condition?
YES
Go to Step 5
NO
Repair defective part.
5. Fuel injector check
Check fuel injector. Fuel Injector Inspection
Is it in good condition?
YES
Replace ECM and recheck DTC. Service and Repair
NO
Replace fuel injector.