Monitor GDS Data

Connect GDS to DLC (Data Link Cable).
Warm up the engine to normal operating temperature.
Monitor "FPS" parameter on the "Current Data" with GDS.

Fig 1: Display - Check The Change Under The Condition Of Acceleration And Deceleration
Courtesy of HYUNDAI MOTOR AMERICA

Fig 2: Display - Check The 'Angle To Close FPR' And 'Angle To Open FPR' Under Idle State
Courtesy of HYUNDAI MOTOR AMERICA

Examine the fuel pressure checking the change of rail pressure and "Angle to Close FPR" and "Angle to Open FPR".
Is the "FPS" parameter displayed correctly?
YES
- Fault is intermittent caused by poor contact in the sensor's and/or ECM/PCM's connector or was repaired and ECM/PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.