CHECK FUEL PUMP OPERATION
Check the fuel pressure.
Connect the GTS to the DLC3.
Put the engine in inspection mode (maintenance mode) Click here.
Start the engine.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Target Fuel Pressure.
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 with seal sub-assembly or fuel pressure sensor.
Check the operating sound.
Remove the No. 1 engine cover sub-assembly Click here.
Put the engine in inspection mode (maintenance mode) Click here.
Start the engine.
Using a sound scope, check the operating sound of the pump.
If no sound can be heard, check the fuel pump with seal sub-assembly, wire harness and ECM.
Stop the engine.
Reinstall the No. 1 engine cover sub-assembly Click here.