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Home >> Jeep >> 2013 >> Compass Limited, AWD, Trans Mfr CD CVT2 >> Repair and Diagnosis >> External Pages >> Different car >> Section 43 ((Transmission Control Module (TCM) - Electrical Diagnostics)) >> DTC Troubleshooting >> P0714-Transmission Temperature Sensor Intermittent >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2009 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

The Electrohydraulic Control Unit Assembly of the NAG1 transmission contains a temperature sensor to monitor the transmission oil temperature. This sensor is wired in series with the transmission Park/Neutral switch. The Transmission Control Module (TCM) expects to see a valid voltage level from the sensor when the shifter is in Reverse or any forward Drive position. The TCM also expects to see an open circuit condition when the shifter is in the Park or Neutral position. When the controller detects an open circuit when in Reverse or any forward drive position the DTC will set. Note: The TCM substitutes the Transmission Temperature reading with Engine Temperature due to an open circuit condition in Park or Neutral.

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