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Home >> Hyundai >> 2004 >> XG350 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> Trouble Shooting For DTC >> DTC P0452: EVAP Emission System - Pressure Sensor Low Input >> Inspection/Repair >> Component Inspection

Component Inspection

  1. Check FTPS.
    1. Engine "ON".
    2. Measure voltage between terminal "3" of FTPS connector and chassis ground.
      1. Specification: 2.4~2.6V (at idle)
        Fig 1: Measuring Voltage Between Terminal 3 Of FTPS Connector And Chassis Ground
        G07374640
    3. Is the measured voltage within specifications?

      YES

      • Go to " 2 Check PCM" as below.

      NO

      • Substitute with a known - good FTPS and check for proper operation.

        If the problem is corrected, replace FTPS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

  2. Check PCM.
    1. Ignition "OFF".
    2. Connect Scantool and Ignition "ON" & Engine "OFF".
    3. Select simulation function on scantool.
    4. Simulate voltage at terminal "3" of FTPS signal connector.
      1. Specification: 2.4~2.6V (at idle)
        Fig 2: Display - FTPS Sensor Voltage Simulation
        G07374641
    5. Does the signal value of FTPS change according to simulation voltage?

      YES

      • Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

      NO

      • Substitute with a known-good PCM and check for proper operation. If the problem is corrected, replace PCM and "Verification of Vehicle Repair" procedure.