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

Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods

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 the Pinpoint Test	GO to Pinpoint Test D
Externally Controlled Variable Displacement Compressor (EVDC) poor performance/does not operate correctly	Refer to the Pinpoint Test	GO to Pinpoint Test V
HVAC functions are inoperative/do not operate correctly from touchscreen only	Communication network FDIM APIM	REFER to: INFORMATION AND ENTERTAINMENT SYSTEM
Reduced outlet airflow	Plugged cabin air filter	INSPECT the cabin air filter. REFER to: Cabin Air Filter If OK, DIAGNOSE for low refrigerant charge, AC always commanded on or blower motor not operating correctly.
	Improper refrigerant level	CARRY OUT the refrigerant system tests. If refrigerant charge is OK, GO to Pinpoint Test J
	Refer to the Pinpoint Test	GO to Pinpoint Test N
The air inlet door is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test E
Incorrect/erratic direction of airflow from outlets	Refer to the Pinpoint Test	GO to Pinpoint Test F
Insufficient A/C cooling	Improper refrigerant level	CARRY OUT the refrigerant system tests. If OK, DIAGNOSE for a temperature door actuator not operating correctly.
Insufficient A/C cooling	Refer to the Pinpoint Test	For inadequate temperature out of the driver side, GO to Pinpoint Test K For inadequate temperature out of the passenger side, GO to Pinpoint Test L
Insufficient, erratic or no heat	Refer to the Pinpoint Test	GO to Pinpoint Test G
The electric booster heater is inoperative or does not operate correctly	Refer to the Pinpoint Test	GO to Pinpoint Test W
The A/C is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test H
The A/C is always on	Refer to the Pinpoint Test	GO to Pinpoint Test I
The A/C is always on - A/C mode always commanded ON	Refer to the Pinpoint Test	GO to Pinpoint Test J
Temperature control is inoperative/does not operate correctly - driver side	Refer to the Pinpoint Test	GO to Pinpoint Test K
Temperature control is inoperative/does not operate correctly - passenger side	Refer to the Pinpoint Test	GO to Pinpoint Test L
The blower motor is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test M
The blower motor does not operate correctly	Refer to the Pinpoint Test	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. If the system pressure is above the A/C pressure relief valve open pressure, REPAIR the system for a restriction.
Climate control does not operate only when remote start is used	IPC information display settings Non-Ford approved remote start system installed	VERIFY Remote Start - Message Center Set To Auto, or Remote Start - Message Center Set To Last User Settings. REFER to: Climate Control System - Vehicles With: Dual Automatic Temperature Control (DATC) - System Operation and Component Description . VERIFY module communications network operation. DIAGNOSE Diagnostic Trouble Codes (DTCs) if present.