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Home >> Kia >> 2012 >> Optima Hybrid >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle System Diagnosis - HEV >> DTC U1004: Lost Communication with Hybrid Powertrain Control Module-H-CAN >> Scantool Diagnostics >> Monitor Scantool Data

Monitor Scantool Data

  1. Connect scantool to Data Link Connector(DLC).
  2. Engine "ON".
  3. Monitor the "CAN Communication Service Data(Engine Clutch Command Pressure)" parameters on the GDS.
    Fig 1: Display - CAN Communication Current Data And Hall Signal Waveform (Normal Situation)
    G08311709Courtesy of KIA MOTORS AMERICA, INC.
    Fig 2: Display - CAN Communication Current Data And Hall Signal Waveform (CAN Line Error)
    G08311710Courtesy of KIA MOTORS AMERICA, INC.
  4. Is measured current data within specific?

    YES 

    • Fault is intermittent caused by poor contact in the sensor's and/or PCM/TCM's connector or was repaired and PCM/TCM's memory was not cleared.

      Thoroughly check connectors for looseness, poor connection, ending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

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