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Home >> Kia >> 2007 >> Amanti >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (2 Of 2) >> DTC Troubleshooting Procedures >> DTC P0448 EVAP. Emission System-Vent Control Circuit Shorted >> Component Inspection

Component Inspection

  1. Check CCV
    1. Ignition "OFF"
    2. Measure resistance between terminals "1" and "2" of the CCV connector.

      Specification: Approx. 23.0 ~ 26.0 at 20°C (68°F)

      Fig 1: Measuring Resistance Between Terminals "1" And "2" Of CCV Connector
      G05301572Courtesy of KIA MOTORS AMERICA, INC.
    3. Monitor the CCV signal waveform and verify that the ground voltage is less than approx. 0.3V (1) and the surge voltage (2) is between 40 V and 60 V.
      Fig 2: Identifying Signal Waveform
      G05301573Courtesy of KIA MOTORS AMERICA, INC.
    4. Is the CCV normal?

      YES 

      • 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.

      NO 

      • Substitute with a known - good CCV and check for proper operation.
      • If the problem is corrected, replace CCV and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
      NOTE: There is a memory reset function on scan tool that can erase optional parts automatically detected and memorized by PCM. After testing PCM on the vehicle, use this function before reusing the PCM
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