Symptom Chart - Climate Control Systems

WARNING: This page is about a different car, the 2015 Ford Special Service Police Sedan and 2015 Ford Police Interceptor Sedan. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Service Information for information about these practices.

Condition	Possible Sources	Action
NOTE: Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the PCM DTC Chart.
No communication with the HVAC module	Fuse Wiring, terminals or connectors Communication network HVAC module	REFER to Module Communications Network .
Externally Controlled Variable Displacement Compressor (EVDC) poor performance/does not operate correctly	Refer to the Diagnostic Routine	GO to Pinpoint Test U .
Unable to duplicate the customer concern and no DTCs present	Refer to the Diagnostic Routine	GO to Pinpoint Test H .
HVAC functions are inoperative/do not operate correctly from touchscreen only	Communication network FCDIM	For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Information and Entertainment Systems 8-I Symptom Chart and DIAGNOSE the touchscreen. For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Information and Entertainment Systems Son Symptom Chart and DIAGNOSE the touchscreen.
HVAC functions are inoperative/do not operate correctly from steering wheel switches/infotainment display only	Steering wheel switches Clockspring SCCM IPC	For 4.2 Inch (107mm) Screen, 4 or 6 Speakers, REFER to Information and Entertainment Systems 4-2 Symptom Chart and DIAGNOSE the steering wheel switches. For 8 Inch (203mm) Touchscreen, 7 Speakers, REFER to Information and Entertainment Systems 8-I Symptom Chart and DIAGNOSE the steering wheel switches. For Sony® Sound, 8 Inch (203mm) Touchscreen, 12 Speakers, REFER to Information and Entertainment Systems Son Symptom Chart and DIAGNOSE the steering wheel switches.
Reduced outlet airflow	Refer to the Diagnostic Routine	If the A/C compressor does not cycle, GO to Pinpoint Test M . If the A/C compressor cycles normally, GO to Pinpoint Test R .
The air inlet door is inoperative	Refer to the Diagnostic Routine	GO to Pinpoint Test I .
Incorrect/erratic direction of airflow from outlets	Refer to the Diagnostic Routine	GO to Pinpoint Test J .
Insufficient, erratic or no heat	Refer to the Diagnostic Routine	GO to Pinpoint Test K .
The air conditioning (A/C) is inoperative	Refer to the Diagnostic Routine	GO to Pinpoint Test L .
The air conditioning (A/C) is always on - A/C compressor does not cycle	Refer to the Diagnostic Routine	GO to Pinpoint Test M .
The air conditioning (A/C) is always on - A/C mode always commanded ON	Refer to the Diagnostic Routine	GO to Pinpoint Test N .
Temperature control is inoperative/does not operate correctly (EMTC)	Refer to the Diagnostic Routine	GO to Pinpoint Test O .
Temperature control is inoperative/does not operate correctly - LH	Refer to the Diagnostic Routine	GO to Pinpoint Test O .
Temperature control is inoperative/does not operate correctly - RH	Refer to the Diagnostic Routine	GO to Pinpoint Test P .
The blower motor is inoperative	Refer to the Diagnostic Routine	GO to Pinpoint Test Q .
The blower motor does not operate correctly	Refer to the Diagnostic Routine	GO to Pinpoint Test R .
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, INSTALL a new A/C compressor. REFER to Climate Control . TEST the system for normal operation. If the system pressure is above the A/C pressure relief valve open pressure, REPAIR the system for a restriction.