Symptom Chart - Climate Control Systems

WARNING: This page is about a different car, the 2015 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

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 the DTC Chart: PCM .

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

Symptom Chart

Condition	Possible Sources	Actions
A module does not respond to the diagnostic scan tool	Fuse Wiring, terminals or connectors HVAC control module	REFER to: Communications Network .
Externally Controlled Variable Displacement Compressor (EVDC) poor performance/does not operate correctly	Refer to Pinpoint Test	GO to Pinpoint Test D
Insufficient A/C cooling	Improper refrigerant level	CARRY OUT the refrigerant system tests. Refer to: Refrigerant System Tests - 1.6L EcoBoost (132kW/180PS) - Sigma . Refer to: Refrigerant System Tests - 2.0L EcoBoost (177kW/240PS) - MI4/2.5L Duratec (125kW/170PS) . If OK, DIAGNOSE for a temperature door actuator not operating correctly.
Insufficient A/C cooling	Temperature door actuator	GO to Pinpoint Test M
The A/C is always on - A/C mode always commanded on	Refer to the Pinpoint Test	GO to Pinpoint Test L
The A/C is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test K
The A/C pressure relief valve is discharging	High system pressure A/C pressure relief valve	Using the R-134a manifold gauge set, CHECK the A/C system pressure. If the system pressure is above the A/C pressure relief valve open pressure, REPAIR the system for a restriction. 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: Air Conditioning (A/C) Compressor - 1.6L EcoBoost (132kW/180PS) - Sigma . Refer to: Air Conditioning (A/C) Compressor - 2.0L EcoBoost (177kW/240PS) - MI4 . Refer to: Air Conditioning (A/C) Compressor - 2.5L Duratec (125kW/170PS) .
The air inlet door is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test H
The blower motor is inoperative	Refer to the Pinpoint Test	GO to Pinpoint Test N
The blower motor does not operate correctly	Refer to the Pinpoint Test	GO to Pinpoint Test O
The electric booster heater is inoperative or does not operate correctly	Refer to the Pinpoint Test	GO to Pinpoint Test A
Incorrect or erratic direction of airflow from outlets	Refer to the Pinpoint Test	GO to Pinpoint Test I
Insufficient, erratic or no heat	Refer to the Pinpoint Test	GO to Pinpoint Test J
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. Refer to: Refrigerant System Tests - 1.6L EcoBoost (132kW/180PS) - Sigma . Refer to: Refrigerant System Tests - 2.0L EcoBoost (177kW/240PS) - MI4/2.5L Duratec (125kW/170PS) . If refrigerant charge is OK, GO to Pinpoint Test L
	Blower motor	GO to Pinpoint Test O
The temperature control is inoperative or does not operate correctly	Refer to the Pinpoint Test	GO to Pinpoint Test M
The temperature display does not switch between Celsius and Fahrenheit	HVAC control module	INSTALL a new HVAC control module to correct the failure to retain configuration data. Refer to: Heating, Ventilation and Air Conditioning (HVAC) Control Module .
The temperature setpoint does not repeat after setting the ignition to OFF	HVAC control module	INSTALL a new HVAC control module. Refer to: Heating, Ventilation and Air Conditioning (HVAC) Control Module .
Unable to duplicate the customer concern and no Diagnostic Trouble Codes (DTCs) present	Refer to the Pinpoint Test	GO to Pinpoint Test G
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.