Component Inspection

Fuel Pressure Regulator Inspection 

1. Ignition "OFF".
2. Connect VMI to KDS and set up an oscilloscope as follow (4-channel);

   Channel A (+): Pin No. 1 (High) terminal of Fuel Pressure Regulator.

   Channel A (-): Pin No. 2 (Low) terminal of Fuel Pressure Regulator.

   Channel B (+): Pin No. 10 (Signal) terminal of Fuel Rail Pressure Sensor joint connector.

3. Ignition "ON" & Engine "ON".
4. Testing Condition: Idle & Approx. 4500RPM

   Specification:  Refer to Figure below

   Courtesy of KIA MOTORS AMERICA, INC.

5. Is the parameter displayed within specification?

   YES 

   • Carefully re-do this troubleshooting guide steps.
   • If the diagnostics have been performed correctly with no failure found, replace the ECM/PCM, and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
   CAUTION: When replacing the ECM/PCM, the vehicle equipped with the immobilizer must be performed procedure as below.
   [In the case of installing used ECM/PCM]

   1. Perform "PCM Neutral mode" procedure with KDS. (Refer to "IMMOBILIZER " in BE group)
   2. After finishing "ECM/PCM Neutral mode", perform "Key teaching" procedure with KDS. (Refer to "IMMOBILIZER " in BE group)

   
   [In the case of installing new ECM/PCM]
   Perform "Key teaching" procedure with KDS. (Refer to "IMMOBILIZER " in BE group)

   NO 

   • Carefully re-do this troubleshooting guide steps.
   • If no problems were found with the circuits or connectors, Replace the Fuel Pressure Regulator and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
   • If no problems were found with the circuits or connectors, Replace the Fuel Rail Pressure Sensor and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.