Symptom Chart: Climate Control - Electronic Manual Temperature Control (EMTC)

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

NOTE: Some PCM Diagnostic Trouble Codes (DTCs) may inhibit A/C operation. If any PCM Diagnostic Trouble Codes (DTCs) are retrieved, diagnose those first. Refer to DTC Chart: Powertrain Control Module (PCM) .

Condition	Possible Sources	Actions
A module does not communicate with the diagnostic scan tool	Fuse(s) Wiring, terminals or connectors FCIM	REFER to: Communications Network .
Externally Controlled Variable Displacement Compressor (EVDC) poor performance/does not operate correctly	Refer to the Pinpoint Test(s) .	GO to Pinpoint Test R
Unable To Duplicate The Customer Concern And No Diagnostic Trouble Codes (DTCs) Present	Refer to Pinpoint Test(s) .	GO to Pinpoint Test C
Reduced outlet airflow	Plugged cabin air filter	INSPECT the cabin air filter. REFER to: Cabin Air Filter . If OK, DIAGNOSE for low refrigerant charge, A/C always commanded on or blower motor not operating correctly.
	Improper refrigerant level	CARRY OUT the refrigerant system tests. Refer to the appropriate Refrigerant System Tests procedure in Climate Control System. If OK, DIAGNOSE for a temperature door actuator not operating correctly. If refrigerant charge is OK, GO to Pinpoint Test H
	Blower motor	GO to Pinpoint Test K
The air inlet door is inoperative	Refer to Pinpoint Test(s) .	GO to Pinpoint Test D
Incorrect or erratic direction of airflow from outlets	Refer to Pinpoint Test(s)	GO to Pinpoint Test E
Insufficient, erratic or no heat	Refer to Pinpoint Test(s) .	GO to Pinpoint Test F
Insufficient heat in Auto Start-Stop mode only	Refer to Pinpoint Test(s) .	GO to Pinpoint Test O
The A/C is inoperative	Refer to Pinpoint Test(s) .	GO to Pinpoint Test G
The A/C is always on - A/C mode always commanded ON	Refer to Pinpoint Test(s) .	GO to Pinpoint Test H
Temperature control is inoperative/does not operate correctly	Refer to Pinpoint Test(s) .	GO to Pinpoint Test I
The blower motor is inoperative	Refer to Pinpoint Test(s) .	GO to Pinpoint Test J
The blower motor does not operate correctly	Refer to Pinpoint Test(s) .	GO to Pinpoint Test K
Insufficient A/C cooling	Improper refrigerant level	CARRY OUT the refrigerant system tests. Refer to the appropriate Refrigerant System Tests procedure in Climate Control System. If OK, DIAGNOSE for a temperature door actuator not operating correctly. If OK, DIAGNOSE for a temperature door actuator not operating correctly.
Insufficient A/C cooling	Temperature door actuator	GO to Pinpoint Test I
A/C pressure relief valve discharging	A/C pressure relief valve	CHECK the high side system pressure. If the pressure is below the A/C pressure relief valve open pressure, 3, 447-4, 137 kPa (500-600 psi), INSTALL a new A/C Compressor. REFER to: Air Conditioning (A/C) Compressor - 2.7L EcoBoost (238kW/324PS) . REFER to: Air Conditioning (A/C) Compressor - 3.5L EcoBoost (272kW/370PS) . REFER to: Air Conditioning (A/C) Compressor - 3.5L Duratec (209kW/284PS) . REFER to: Air Conditioning (A/C) Compressor - 5.0L 32V Ti-VCT .
A/C pressure relief valve discharging	High system pressure	CHECK the high side system pressure. If the system pressure is above the A/C pressure relief valve open pressure 3, 447-4, 137 kPa (500-600 psi), REPAIR the A/C 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: Electronic Manual Temperature Control (EMTC) - System Operation and Component Description . VERIFY module communications network operation. DIAGNOSE Diagnostic Trouble Codes (DTCs) if present.