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

Diagnostics in this service information 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)

Symptom Chart

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	GO to Pinpoint Test R
Unable To Duplicate The Customer Concern And No Diagnostic Trouble Codes (DTCs) Present	Refer to Pinpoint Test	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 Refrigerant System Tests - 3.5L EcoBoost (272kW/370PS) 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	GO to Pinpoint Test D
Incorrect or erratic direction of airflow from outlets - front	Refer to Pinpoint Test	GO to Pinpoint Test E
Incorrect or erratic direction of airflow from outlets - rear	Refer to Pinpoint Test	GO to Pinpoint Test S
Insufficient, erratic or no heat	Refer to Pinpoint Test	GO to Pinpoint Test F
Insufficient heat in Auto Start-Stop mode only	Refer to Pinpoint Test	GO to Pinpoint Test O
The A/C is inoperative	Refer to Pinpoint Test	GO to Pinpoint Test G
The A/C is always on -- A/C mode always commanded ON	Refer to Pinpoint Test	GO to Pinpoint Test H
Temperature control is inoperative/does not operate correctly	Refer to Pinpoint Test	GO to Pinpoint Test I
Temperature control is inoperative or does not operate correctly - rear	Refer to Pinpoint Test	GO to Pinpoint Test T
The front blower motor is inoperative	Refer to Pinpoint Test	GO to Pinpoint Test J
The front blower motor does not operate correctly	Refer to Pinpoint Test	GO to Pinpoint Test K
The rear blower motor is inoperative	Refer to Pinpoint Test	GO to Pinpoint Test U
The rear blower motor does not operate correctly	Refer to Pinpoint Test	GO to Pinpoint Test V
Insufficient A/C cooling	Improper refrigerant level	CARRY OUT the refrigerant system tests. Refer to Refrigerant System Tests - 3.5L EcoBoost (272kW/370PS) 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
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.