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Home >> Hyundai >> 2008 >> Tucson GLS, 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 >> Signal Circuit Inspection

Signal Circuit Inspection

  1. Check for open in signal circuit.
    1. Ignition "OFF".
    2. Disconnect PCM connector.
    3. Measure resistance between terminals 1 of the FTPS harness connector and 33 of the PCM harness connector.

      Specification: Approx. 0Ω

      Fig 1: Measuring Resistance Between Terminals 1 Of FTPS Harness Connector And 33 Of PCM Harness Connector
      G04810904Courtesy of HYUNDAI MOTOR CO.
    4. Is resistance within the specification?

      YES  : --> Go to next step as below.

      NO  : --> Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

  2. Check for short to ground in signal circuit
    1. Measure resistance between terminal 1 of the FTPS harness connector and chassis ground

      Specification :Infinite

      Fig 2: Measuring Resistance Between Terminal 1 Of FTPS Harness Connector And Chassis Ground
      G04810480Courtesy of HYUNDAI MOTOR CO.
    2. Is resistance within the specification?

      YES  : --> Go to next step as below.

      NO  : --> Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.