Scheme 1
Scheme 1: Engine Compartment Side
Scheme 2
Scheme 3
Scheme 3: FUEL SYSTEM FLOW DIAGRAM [L3]
Fuel Injector Operation Inspection
| WARNING | To prevent serious injury or damage, always perform diagnosis while referring to the warnings and cautions in each procedure when inspecting or repairing the fuel system. |
| STEP | INSPECTION | RESULT | ACTION |
|---|
| 1 | Is there fuel injector operation sound from each cylinder when the engine is cranking? (Use a sound scope or equivalent). | Yes | The fuel injector operation system is normal. |
| No | If the operation sound cannot be verified at all cylinders, go to Step 2. If the operation sound cannot be verified at specific cylinders, go to Step 3. |
| 2 | Is the main relay operation normal? | Yes | Inspect the following: Wiring harnesses and connectors related to fuel injector power supply system PCM connector Fuel injector ground and related wiring harnesses and connectors |
| No | Replace the main relay. |
| 3 | Remove the fuel injector where the operation sound cannot be verified, install it to the connector where the operation sound is verified, and then crank the engine again. Is there operation sound? | Yes | Inspect for open or short circuit in the wiring harnesses and connectors, and repair or replace the malfunctioning part. |
| No | Replace the fuel injector. (See FUEL INJECTOR REMOVAL/INSTALLATION [L3] ). |
FUEL INJECTOR OPERATION INSPECTION
![Scheme 3: FUEL SYSTEM FLOW DIAGRAM [L3]](https://i.diagnostdata.com/repair/06/06bc664d49a0e8acef508c3dbd408aea792bbf436eb06cfaa00b917a4a015739.webp)