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Home >> Kia >> 2010 >> Sedona Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle Diagnosis >> DTC P0712: Transaxle Fluid Temperature Sensor Circuit Low Input >> Inspection Repair >> Component Inspection >> Check TCM

Check TCM

  1. Ignition "ON" & Engine "OFF".
  2. Connect "TRANSAXLE FLUID TEMPERATURE SENSOR" connector.
  3. Install scantool and select a SIMU-SCAN,
  4. Simulate voltage (0→5V) to "TRANSMISSION FLUID TEMPERATURE SENSOR" signal circuit.
    Fig 1: Scantool Display - Simu Scan (1 Of 2)
    G06839910Courtesy of KIA MOTORS AMERICA, INC.
    Fig 2: Scantool Display - Simu Scan (2 Of 2)
    G06839911Courtesy of KIA MOTORS AMERICA, INC.
  5. Is FLUID TEMP. SENSOR signal value changed according to simulation voltage?

    YES

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

    NO

    1. Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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