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Home >> Kia >> 2005 >> Spectra5 2.0 2, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures - 2.0L >> Troubleshooting For DTC >> DTC P0452: EVAP Emission Control System Pressure Sensor Low Input >> Inspection Procedure
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Inspection Procedure

  1. PROBLEM VERIFICATION 
    1. Turn ignition switch to ON position.
    2. Using a Hi-Scan (Pro), monitor the FTPS signals.

      Specification (FTPS signal): approximately 2.5V at idle

    Is voltage within specification?

    1. No:  Go to next step.
    2. Yes: Problem is intermittent or was repaired and ECM memory was not cleared. See INTERMITTENT PROBLEM INSPECTION PROCEDURE ..
  2. CHECK FTPS AND ECM CONNECTORS 

    Thoroughly check connectors for loose, poor connection, bent, corrosion, contamination, deterioration, or damage. See CONNECTOR INSPECTION PROCEDURE .

    Are all connectors good?

    1. Yes:  Go to next step.
    2. No: Repair or replace it.
  3. CHECK REFERENCE VOLTAGE TO FTPS 
    1. Turn ignition switch to OFF position and disconnect FTPS connector.
    2. Turn ignition switch to ON position.
    3. Measure voltage between terminal 3 of the FTPS harness connector and chassis ground.

      Specification (Voltage): approximately 5V

      Fig 1: Checking Reference Voltage To FTPS
      G00719479Courtesy of KIA MOTORS AMERICA, INC.

    Is voltage within specification?

    1. Yes:  Go to next step.
    2. No: Repair open or short to chassis ground in harness.
  4. CHECK FOR SHORT TO GROUND IN HARNESS 
    1. Turn ignition switch to OFF position, and then disconnect FTPS and ECM connectors.
    2. Measure resistance between terminal 1 and 2 of the FTPS harness connector.
    3. Measure resistance between terminal 1 of the FTPS harness connector and chassis ground.

      Specification (Resistance): infinite

      Fig 2: Checking For Short To Ground In Harness
      G00719480Courtesy of KIA MOTORS AMERICA, INC.

    Does each resistance indicate open?

    1. Yes:  Go to next step.
    2. No: Repair short or short to chassis ground in harness.
  5. CHECK FTPS FOR NORMAL PARAMETERS AGAIN 
    1. Turn ignition switch to ON position.
    2. Using a Hi-Scan (Pro), monitor the FTPS signals.

      Specification (FTPS signal): approximately 2.5V at idle

    Is voltage within specification?

    1. Yes:  Proceed with ECM PROBLEM INSPECTION PROCEDURE .
    2. No: Replace FTPS.