Possible DTC: P1180
Feature: Depending on the rail pressure to be set, PRV is actuated by ECU with a PWM (Pulse with modulated).
When PRV is replaced
Tightening torque :</emph> 5 ± 1Nm
Replace the faulty fuel rail assembly in case of new model vehicle within a year, or replace the faulty parts of vehicle of which model year is more than a year.
＊ CC-CODE
C003 (General error)
After run mode or fuel cut off mode, if rail pressure does not drop below the set value within set time, error is deteced.
Possible causes of trouble :
Short circuit Contact resistance PRS defective EFP relay continuously active Pressure regulator valve defective High pressure pump ECU |
C018 (Line : Short circuit)
Possible causes of trouble :
Short circuit to Bat line, Open circuit in wiring WTS defective |
C019 (Line : Open circuit)
Possible causes of trouble :
Short circuit to GND line, Open circuit |
Pull off PRV plug
Check wiring between ECU pin 108, pin 109 and PRV.
Measure the resistance of PRV
Approx. set value : 2.3 ± 0.23Ω
Check RPS if preceding test is OK.
Examine the system for leaks if rail pressure sensor is OK.
Check the high pressure circuit
Visually inspect for leakage and check all connectors.
Block the fuel return line of the function block.
Pull off the electirc connector from all injectors and connect the self diagnosis tester (HI-SCAN).
Ignition on, and operate starting motor for 5 seconds.
Actual value read out : Rail pressure
Actual value ＜ 100 bar : High pressure pump defective or air in the system
