Check Fuel Pressure

IG KEY "OFF".
Disconnect fuel pump relay from junction box in passenger compartment.
Start engine and await until engine is off and then, IG "OFF".
Connect fuel pump relay again.
Connect fuel pressure gauge on the fuel filter with fuel pressure gauge adaptor.
Start engine again and measure fuel pressure.
Specification : 480 ~ 500 kPa (4.9 ~ 5.1 kgf/cm² , 69.6 ~ 72.5 psi)
Is the fuel pressure normal?
YES
- Go to "COMPONENT INSPECTION " procedure.
- Check any damage of fuel return hose or pipe.
NO
- Check any stuck of the valve in the fuel pressure regulator.
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.