Symptom Chart - Climate Control Systems
WARNING: This page is about a different car, the 2016 Ford Transit-350 HD, 2016 Ford Transit-350, 2016 Ford Transit-250, and 2016 Ford Transit-150. 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 |
REFER to: Communications Network . |
| 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. |
| Temperature door actuator | GO to Pinpoint Test K | |
| The A/C is always on - A/C mode always commanded on | Refer to the Pinpoint Test | GO to Pinpoint Test J |
| The A/C is inoperative | Refer to the Pinpoint Test | GO to Pinpoint Test I |
| The A/C pressure relief valve is discharging | High system pressure A/C pressure relief valve |
Using the 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 - 3.2L Duratorq-TDCi (148kW/200PS) - Puma . Refer to: Air Conditioning (A/C) Compressor - 3.5L EcoBoost (235kW/320PS) . Refer to: Air Conditioning (A/C) Compressor - 3.7L Duratec (199kW/270PS) . |
| The air inlet door is inoperative | Refer to the Pinpoint Test | GO to Pinpoint Test F |
| The front blower motor is inoperative | Refer to the Pinpoint Test | GO to Pinpoint Test L |
| The front blower motor does not operate correctly | Refer to the Pinpoint Test | GO to Pinpoint Test M |
| The rear blower motor is inoperative | Refer to the Pinpoint Test | GO to Pinpoint Test O |
| The rear blower motor does not operate correctly | Refer to the Pinpoint Test | GO to Pinpoint Test P |
| The electric booster heater is inoperative or does not operate correctly | Refer to the Pinpoint Test | GO to Pinpoint Test A |
| The RHVAC system is inoperative or not operating correctly | Refer to the Pinpoint Test | GO to Pinpoint Test Q |
| Incorrect or erratic direction of airflow from outlets | Refer to the Pinpoint Test | For front HVAC air flow concerns, GO to Pinpoint Test G For RHVAC air flow concerns, GO to Pinpoint Test Q |
| Insufficient, erratic or no heat | Refer to the Pinpoint Test | For engine coolant/heater core related concerns, GO to Pinpoint Test H For electric booster heater related concerns, GO to Pinpoint Test A |
| Reduced outlet airflow | Improper hood vent air duct plug location (if equipped) | Some Transits may exhibit a lack of airflow from the front climate control system cabin vents in fresh air mode. This concern can be due to improper installation of the hood vent air duct plug. The correct location for the plug is on the left side hood opening. Refer to: Hood . 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 . If refrigerant charge is OK, GO to Pinpoint Test J | |
| Blower motor | GO to Pinpoint Test M | |
| The temperature control is inoperative or does not operate correctly | Refer to the Pinpoint Test | GO to Pinpoint Test K |
| Unable to duplicate the customer concern and no Diagnostic Trouble Codes (DTCs) present | Refer to the Pinpoint Test | GO to Pinpoint Test E |