Control Circuit Inspection

■ Open Check 

1. IG "OFF" & Disconnect fuel pressure regulator (spill valve) connector.
2. IG "ON".
3. Measure voltage between high/low terminal of fuel pressure regulator (spill valve) harness connector and chassis ground.

   Specification:  High - approx. 2.3V, Low - approx. 0V

   Fig 1: Measuring Voltage Between High/Low Terminal Of Fuel Pressure Regulator (Spill Valve) 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 short to ground in fuel pressure regulator (spill valve) control circuit and go to "VERIFICATION OF VEHICLE REPAIR " procedure.