Signal Circuit Inspection

■ Check voltage 

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

   Specification:  signal - approx. 5V

   Fig 1: Measuring Voltage Between Signal 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 below.

   NO 

   • Repair open in signal circuit of the fuel rail pressure sensor and go to "Verification of Vehicle Repair " procedure.