PROCEDURE
CHECK FUEL PUMP OPERATION
Check fuel pressure.
Connect the GTS to the DLC3.
Start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Active Test / Control the Target Fuel Pressure / Fuel Press.
| Active Test Display |
|---|
| Control the Target Fuel Pressure |
| Data List Display |
|---|
| Fuel Press |
Check that the fuel pressure fluctuates when the target fuel pressure changes.
Tech Tips
The target fuel pressure operation lowers the target fuel pressure by 12.5% or increases the target fuel pressure by 25%.
If the result is not as specified, replace the fuel pump assembly or fuel delivery pipe sub-assembly (fuel pressure sensor).
Check operating sound.
Remove the V-bank cover sub-assembly.
Start the engine.
Using a sound scope, check the operating sound of the pump.
If no sound can be heard, check the fuel pump assembly, wire harness and ECM.
Stop the engine.
Reinstall the V-bank cover sub-assembly.