Symptom Chart - Climate Control Systems

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

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

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

Condition	Actions
Externally Controlled Variable Displacement Compressor (EVDC) poor performance/does not operate correctly	GO to Pinpoint Test S
A module does not respond to the diagnostic scan tool	REFER to: Controller Area Network (CAN) Module Communications Network .
Insufficient Air Conditioning (A/C) cooling	GO to Pinpoint Test V
The A/C is inoperative NON HEV	GO to Pinpoint Test F
The A/C is always on -- A/C mode always commanded on NON HEV	GO to Pinpoint Test G
The A/C pressure relief valve is discharging	GO to Pinpoint Test U
AIR CONDITIONING (A/C) ELECTRIC COMPRESSOR INOPERATIVE OR OPERATING POORLY AIR CONDITIONING CONTROL MODULE (ACCM)	GO to Pinpoint Test Y
The air inlet door is inoperative	GO to Pinpoint Test C
The blower motor is inoperative	GO to Pinpoint Test J
The blower motor does not operate correctly	GO to Pinpoint Test K
Incorrect or erratic direction of airflow from outlets	GO to Pinpoint Test D
Insufficient, erratic or no heat	GO to Pinpoint Test E
Reduced outlet airflow	GO to Pinpoint Test W
The temperature control is inoperative or does not operate correctly - driver side	GO to Pinpoint Test H
The temperature control is inoperative or does not operate correctly - passenger side	GO to Pinpoint Test I
The electric booster heater is inoperative or does not operate correctly	GO to Pinpoint Test T
NVH when the A/C is on	GO to Pinpoint Test X