Symptom Chart: Climate Control - Dual Automatic Temperature Control (DATC)

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Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. for information about these practices.

SYMPTOM CHART

Condition	Possible Sources	Actions
No communication with the HVAC control module	Fuse(s) Wiring, terminals or connectors HVAC control module	REFER to: COMMUNICATIONS NETWORK .
Unable to duplicate the customer concern	Refer to Diagnostic Routine	GO to Pinpoint Test D
HVAC functions are inoperative/do not operate correctly from touchscreen only	Communication network FDIM APIM	REFER to: INFORMATION AND ENTERTAINMENT SYSTEM .
Reduced outlet airflow	Refer to Diagnostic Routine	If the A/C compressor clutch is always ON with the mode selection switch turned off and PCM DTC P1464 is not present, GO to Pinpoint Test I If the AC compressor clutch is always ON with the mode selection switch turned off and the PCM DTC P1464 is present, GO to Pinpoint Test J If the A/C compressor clutch turns on and off normally with the mode selection switch, GO to Pinpoint Test N
The air inlet door is inoperative	Refer to Diagnostic Routine	GO to Pinpoint Test E
Incorrect/erratic direction of airflow from outlets	Refer to Diagnostic Routine	GO to Pinpoint Test F
Insufficient, erratic or no heat	Refer to Diagnostic Routine	GO to Pinpoint Test G
The A/C is inoperative	Refer to Diagnostic Routine	GO to Pinpoint Test H
The A/C is always on	Refer to Diagnostic Routine	GO to Pinpoint Test I
The A/C is always on - A/C mode always commanded ON	Refer to Diagnostic Routine	GO to Pinpoint Test J
Temperature control is inoperative/does not operate correctly - LH	Refer to Diagnostic Routine	GO to Pinpoint Test K
Temperature control is inoperative/does not operate correctly - RH	Refer to Diagnostic Routine	GO to Pinpoint Test L
The blower motor is inoperative	Refer to Diagnostic Routine	GO to Pinpoint Test M
The blower motor does not operate correctly	Refer to Diagnostic Routine	GO to Pinpoint Test N
The temperature setpoint does not repeat after turning the ignition switch OFF	HVAC control module	INSTALL a new HVAC control module. REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module .
The temperature display will not switch between Celsius and Fahrenheit	HVAC control module IPC	If the IPC does not switch between English and Metric, REFER to: INSTRUMENTATION, MESSAGE CENTER AND WARNING CHIMES . If only the HVAC control module does not switch between English and Metric, INSTALL a new HVAC control module. REFER to: Heating, Ventilation and Air Conditioning (HVAC) Control Module .
A/C pressure relief valve discharging	High system pressure A/C pressure relief valve	CHECK the high side system pressure. If the pressure is below the A/C pressure relief valve open pressure, REPLACE the A/C compressor. For 2.0L Duratec-HE REFER to: Air Conditioning (A/C) Compressor - 2.0L Duratec-HE . For 2.0L Ecoboost REFER to: Air Conditioning (A/C) Compressor - 2.0L EcoBoost . If the system pressure is above the A/C pressure relief valve open pressure, REPAIR the system for a restriction.