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Home >> Hyundai >> 2007 >> Elantra SE, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System (G4GC-GSL 2.0) >> DTC Troubleshooting Procedures >> DTC P0452 EVAP. Emission System-Pressure Sensor Low Input >> Component Inspection
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Component Inspection

  1. Reconnect FTPS connector
  2. Ignition "ON" & Engine "OFF".
  3. Measure voltage between terminal 3 of the sensor harness connector and chassis ground (Do not disconnect FTPS harness connector)

    Specification : Voltage increases proportionally with decreasing pressure (Approx. 2.5V to 4.5V)

    PRESSURE SPECIFICATIONS

    Pressure (kPa)  -6.67 0 6.67
    Output Voltage (V)  0.5 2.5 4.5
    Fig 1: Measuring FTPS Output Voltage Between Terminal 3 (Back Probe) Of FTPS Harness Connector And Chassis Ground
    G05363851
  4. Is voltage within the specification?

    YES 

    • Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure

    NO 

    • Check FTPS for contamination, deterioration, or damage. Substitute with a known-good FTPS and check for proper operation. If the problem is corrected, replace FTPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure