Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2018 Ford Transit-350 HD PTV, 3.5L Eng VIN GFACTORY OEM SERVICE PROCEDURE
Climate Control System - General Information
- Specifications
- Description And Operation
- Climate Control System - Component Location
- Climate Control System - Overview
- Climate Control System - System Operation and Component Description
- System Diagram
- Network Message Charts
- The Refrigerant Cycle
- Thermostatic Expansion Valve (TXV) Type Refrigerant System State and Flow
- Control System Logic
- Controls and Compressor Operation
- A/C Request
- Compressor Clutch
- Air Handling
- Component Description
- Electric Booster Heater
- Rear Climate Control
- HVAC Control Module
- Blower Motor
- Blower Motor Resistor
- Evaporator Core
- Heater Core
- Climate Control Housing
- Door Actuator - Air Distribution
- Door Actuator - Air Inlet
- Door Actuator - Temperature
- A/C Pressure Transducer
- Ambient Air Temperature (AAT) Sensor (if equipped)
- Evaporator Temperature Sensor
- A/C Compressor Clutch
- Fixed Displacement Compressor (3.5L and 3.7L engines)
- Internally Controlled Variable Displacement Compressor (3.2L diesel)
- Thermostatic Expansion Valve (TXV)
- A/C Condenser
- Receiver Drier
- Service Gauge Port Valves
- Refrigerant System Dye
- Diagnosis And Testing
- Climate Control System
- Diagnostic Trouble Code (DTC) Charts
- Symptom Charts
- Pinpoint Tests
- Pinpoint Test A : The Electric Booster Heater Is Inoperative Or Does Not Operate Correctly
- Pinpoint Test B : P0532, P0533
- Pinpoint Test C : P0645, P0646 Or P0647
- Pinpoint Test D : B1B71:11, B1B71:15
- Pinpoint Test E : Unable To Duplicate The Customer Concern And No Diagnostic Trouble Codes (DTCS) Present
- Pinpoint Test F : The Air Inlet Door Is Inoperative
- Pinpoint Test G : Incorrect Or Erratic Direction Of Airflow From Outlets
- Pinpoint Test H : Insufficient, Erratic Or No Heat
- Pinpoint Test I : The A/C (Air Conditioning) Is Inoperative
- Pinpoint Test J : The A/C (Air Conditioning) Is Always On -- A/C (Air Conditioning) Mode Always Commanded On
- Pinpoint Test K : The Temperature Control Is Inoperative Or Does Not Operate Correctly
- Pinpoint Test L : The Front Blower Motor Is Inoperative
- Pinpoint Test M : The Front Blower Motor Does Not Operate Correctly
- Pinpoint Test N : P193E
- Pinpoint Test O : The Rear Blower Motor Is Inoperative
- Pinpoint Test P : The Rear Blower Motor Does Not Operate Correctly
- Pinpoint Test Q : RHVAC (Rear Heating, Ventilation And Air Conditioning) System Is Inoperative Or Not Operating Correctly
- Pinpoint Test R : B121F:11
- Climate Control System
- General Procedures
- Air Conditioning (A/C) Clutch and Air Conditioning (A/C) Clutch Field Coil
- Air Conditioning (A/C) Clutch Air Gap Adjustment
- Air Conditioning (A/C) Compressor Leak Detection
- Air Conditioning (A/C) Odor Treatment
- Air Conditioning (A/C) System Flushing
- Air Conditioning (A/C) System Recovery, Evacuation and Charging
- Condenser Core Leak Check
- Electronic Leak Detection
- Evaporator Core Leak Check
- Fluorescent Dye Leak Detection
- Heater Core Leak Check
- Refrigerant Identification Testing
- Refrigerant Oil Adding
- Refrigerant System Tests
- Removal And Installation
- Air Conditioning (A/C) Clutch and Air Conditioning (A/C) Clutch Field Coil
- Air Conditioning (A/C) Compressor - 3.2L Duratorq-TDCi (148kW/200PS) - Puma
- Air Conditioning (A/C) Compressor - 3.5L EcoBoost (235kW/320PS)
- Air Conditioning (A/C) Compressor - 3.7L Duratec (199kW/270PS)
- Air Conditioning (A/C) Compressor Manifold and Tube Assembly - 3.2L Duratorq-TDCi (148kW/200PS) - Puma
- Air Conditioning (A/C) Compressor Manifold and Tube Assembly - 3.2L Duratorq-TDCi (148kW/200PS) - Puma, Vehicles With: Rear Climate Control
- Air Conditioning (A/C) Compressor Manifold and Tube Assembly - 3.5L EcoBoost (235kW/320PS)
- Air Conditioning (A/C) Compressor Manifold and Tube Assembly - 3.5L EcoBoost (235kW/320PS), Vehicles With: Rear Climate Control
- Air Conditioning (A/C) Compressor Manifold and Tube Assembly - 3.7L Duratec (199kW/270PS)
- Air Conditioning (A/C) Compressor Manifold and Tube Assembly - 3.7L Duratec (199kW/270PS), Vehicles With: Rear Climate Control
- Air Conditioning (A/C) Pressure Transducer
- Air Distribution Door Actuator
- Air Inlet Door Actuator
- Air Inlet Duct
- Ambient Air Temperature Sensor
- Blower Motor
- Blower Motor Resistor
- Cabin Air Filter
- Center Registers
- Climate Control Housing
- Condenser
- Driver Side Register
- Evaporator
- Evaporator Temperature Sensor
- Heater Core
- Heating, Ventilation and Air Conditioning (HVAC) Control Module
- Passenger Side Register
- Receiver Drier Element
- Temperature Door Actuator
- Thermostatic Expansion Valve
- Thermostatic Expansion Valve Manifold and Tube Assembly
- Thermostatic Expansion Valve Manifold and Tube Assembly - Vehicles With: Rear Climate Control
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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