Circuit Inspection

■ Check voltage 

1. IG "OFF" & Disconnect fuel rail pressure sensor connector.
2. IG "ON".
3. Measure voltage between power, signal, ground terminal of fuel rail pressure sensor harness connector and chassis ground.

   Specification:  power - approx. 5V, signal - approx. 5V, ground - approx. 0V

   Fig 1: Measuring Voltage Between Power, Signal, Ground Terminal Of Fuel Rail Pressure Sensor Harness Connector And Chassis Ground

   Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured voltage within specification?

   YES 

   • Go to "COMPONENT INSPECTION " procedure.

   NO 

   • Repair open or short in fuel rail pressure sensor circuit and go to "VERIFICATION OF VEHICLE REPAIR " procedure.