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Home >> Hyundai >> 2007 >> Azera GLS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC Troubleshooting Procedures >> DTC P0452 EVAP. Emission System-Pressure Sensor Low Input >> Component Inspection
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Component Inspection

  1. Check FTPS.
    1. IG "OFF" and connect scantool to DLC (Data Link Connector).
    2. Monitor "FTPS" parameter with acceleration on service data.

      SPECIFICATION: 

      PRESSURE AND OUTPUT VOLTAGE REFERENCE CHART

      Pressure (kPa) Output Voltage (V)
      -6.67 0.5
      0 2.5
      6.67 4.5
    3. Does the "FTPS" parameter with accelerating on the service data change?

      YES 

      • Go to " 2Check PCM" as follows.

      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. IG "OFF" disconnect FTPS connector
    2. Connect Scantool and IG "ON" & ENG "OFF"
    3. Select simulation function on scantool.
    4. Simulate voltage at terminal 3 of FTPS harness connector.
      Fig 1: Scan Tool Display - TANK PRESS SNSR
      G04879885
    5. Does the signal value of FTP sensor change according to simulation voltage?

      YES 

      • Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. 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 go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NOTE: There is a memory reset function on scantool that can erase optional parts automatically detected and memorized by PCM
    Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others