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Home › Hyundai › 2010 › Genesis 4.6 › Repair and Diagnosis › Transmission › Automatic Trans › Automatic Transaxle System (6HP26) › Troubleshooting For DTC › DTC P0666: PCM/ECM/TCM Internal Temperature Sensor Circuit › Monitor Scantool Data

Monitor Scantool Data

  1. Connect scantool to Diagnostic Connector.
  2. Ignition "ON" & Engine "OFF".
  3. Confirm the "TCM Temperature sensor" parameter on the scan tool.
    Fig 1: Scan Tool Display - Temperature Of TCU Inside
    G06106451Courtesy of HYUNDAI MOTOR CO.
  4. Is the "TCM Temperature sensor" output value normal range?

    YES 

    • Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM)'s connector or was repaired and TCM (PCM) memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

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