OBD Operation Summary for 6.7L Diesel - MotorCraftService.com

Ambient Air Temperature Plausibility CheckAn air temperature vs. environmental temp plausibility check is performed on each drive cycle. It compares theabsolute difference of IAT1 and AAT, if the difference is greater than 50C for 5 minutes and vehicle speed isabove 80.5 km/h, a fault is detected.Ambient Air Temperature (AAT) Sensor Plausibility Check:DTCsMonitor ExecutionMonitor SequenceSensors OKTypical MonitoringDurationP009A - Intake Air Temperature /Ambient Air Temperature CorrelationContinuousNoneNot applicable5 minutesTypical Ambient Air Temperature Sensor Plausibility Check Entry Conditions:Entry Condition Minimum MaximumBattery Voltage 8 V 15 VVehicle Speed80.5 km/hCoolant Temp -35 deg C 121 deg CEnvironmental Temp -35 deg C 80 deg CKey OnTypical Ambient Air Temperature Sensor Plausibility Check Malfunction Thresholds:If AT1 – AAT > 50 deg C for 5 minutes, a fault is detected and the code is set.Charge Air Cooler (CACT1) Sensor Circuit Check:DTCsMonitor executionMonitor SequenceSensors OKTypical Monitoring DurationP007C – Charge Air Cooler Temperature Sensor Circuit LowP007D – Charge Air Cooler Temperature Sensor Circuit HighContinuousNoneNot applicable4 secTypical Charge Air Cooler Temperature Sensor Circuit Check Malfunction Thresholds:Voltage < 0.092 V (161 deg C) or voltage > 4.90 V (-43 deg C)FORD MOTOR COMPANY REVISION DATE: FEBRUARY 9, 2012 09.01.00.02-PAGE 77 OF 157