Symptom Chart Climate Control Systems

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

Symptom Chart - Climate Control Systems

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: PCM

Symptom Chart

Condition	Possible Sources	Actions
A module does not respond to the diagnostic scan tool	Fuse 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 C
Insufficient Air Conditioning (A/C) cooling	Improper refrigerant level	CARRY OUT the refrigerant system tests. REFER to: Refrigerant System Tests If OK, DIAGNOSE for a temperature door actuator not operating correctly.
Insufficient Air Conditioning (A/C) cooling	Temperature door actuator	For inadequate temperature out of the LH side, GO to Pinpoint Test M For inadequate temperature out of the RH side, GO to Pinpoint Test F
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
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
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 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 - LH	Refer to the Pinpoint Test	GO to Pinpoint Test M
The temperature control is inoperative or does not operate correctly - RH	Refer to the Pinpoint Test	GO to Pinpoint Test F
The temperature display does not switch between Celsius and Fahrenheit	FCIM	INSTALL a new FCIM to correct the failure to retain configuration data. For vehicles equipped with Audiophile System, REFER to: Front Controls Interface Module (FCIM) For vehicles equipped with THX, REFER to: Front Controls Interface Module (FCIM)
The temperature setpoint does not repeat after setting the ignition to OFF	FCIM	INSTALL a new FCIM to correct the failure to retain configuration data. For vehicles equipped with Audiophile System, REFER to: Front Controls Interface Module (FCIM) For vehicles equipped with THX, REFER to: Front Controls Interface Module (FCIM)
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 - System Operation and Component Description VERIFY module communications network operation. DIAGNOSE Diagnostic Trouble Codes (DTCs) if present.