OBD Operation Summary for 6.7L Diesel - MotorCraftService.com

Transmission Fluid Temperature Sensor Functional Check Operation:DTCs (non-MIL)Monitor executionMonitor SequenceSensors OKMonitoring DurationP0712, P0713 - Opens/shortsP1783 - OvertemperatureP0711 - Stuck low/highcontinuousnoneECT substituted if TFT has malfunctionTFT inferred from pressure solenoids on CFT302.5 seconds for electrical, 600 seconds for functional checkTypical TFT Stuck Low/High check entry conditions:Auto Transmission Entry Conditions Minimum MaximumEngine Coolant Temp (hot or cold, not midrange) > 100 o F < 20 o FTime in run modeTime in gear, vehicle moving, positive torqueVehicle SpeedTime with engine off (cold start) OREngine Coolant Temp AND Trans Fluid Temp (inferred cold start)500 – 600 sec150 sec15 mph420 min122 o FTypical TFT malfunction thresholds:Opens/shorts: TFT voltage 4.6 volts for 2.5 secondsOvertemperature: Indicated TFT > 275 deg FTFT Stuck low/high, i.e. TFT stuck at high temperature or stuck at low temperature):Stores a fault code if TFT stabilizes (stops increasing if temperature < 70 deg F, stops decreasing iftemperature > 225 deg F) before reaching the temperature region where all MIL tests are enabled (70 to 225deg F). If TFT remains constant (+/- 2 deg F) for approximately 2.5 minutes of vehicle driving outside the 70to 225 deg F zone a P0711 fault code will be stored.FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 146 OF 157