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.
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HOMESERVICE MANUALSLINCOLN2015MKS BASE, AWDREPAIR AND DIAGNOSISHEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSCLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS
2015 Lincoln MKS Base, AWD
Climate Control System - General Information And Diagnostics
2015 Lincoln MKS Base, AWDSECTION Climate Control System - General Information And Diagnostics
- Specifications
- Description And Operation
- Climate Control System
- Climate Control System DATC - Overview
- Climate Control System Dual Automatic Temperature Control (DATC) - System Operation and Component Description
- The Refrigerant Cycle
- Control System Logic
- Air Handling
- Remote Start
- Component Description
- Externally Controlled Variable Displacement Air Conditioning (A/C) Compressor
- Air Conditioning (A/C) Compressor Clutch and Clutch Field Coil
- A/C Pressure Transducer
- Ambient Air Temperature (AAT) Sensor
- Blower Motor
- Blower Motor Speed Control
- Condenser
- Door Actuator - Air Inlet
- Door Actuator - Defrost/panel/floor mode
- Door Actuator - Temperature Blend LH and RH
- Evaporator Core
- Evaporator Temperature Sensor
- Heater Core
- Heater Core and Evaporator Core Housing
- HVAC control module - DATC
- In-vehicle temperature and humidity sensor
- Receiver Drier
- Refrigerant System Dye
- Service Gauge Port Valves
- Sunload sensor
- Thermostatic Expansion Valve (TXV)
- Climate Control System
- Diagnosis And Testing
- Climate Control System
- Principles of Operation
- Inspection and Verification
- DTC Charts
- Symptom Chart - Climate Control Systems
- Symptom Chart - NVH
- Pinpoint Tests
- Pinpoint Test A : DTC P0532 Or P0533
- Pinpoint Test B : DTC P0645
- PINPOINT TEST C : DTCs C1B14:11 OR 12
- PINPOINT TEST D : DTCs B1A61:11 OR 15
- PINPOINT TEST E : DTCs B1A63:11, B1A63:15, B1A64:11, B1A64:15
- PINPOINT TEST F : DTCs B1B71:11 OR 15
- PINPOINT TEST G : DTCs U3003:16 OR 17
- PINPOINT TEST H : UNABLE TO DUPLICATE THE CUSTOMER CONCERN AND NO DTCs PRESENT
- Pinpoint Test I : Air Inlet Door Is Inoperative
- Pinpoint Test J : Incorrect/Erratic Direction Of Airflow From Outlets
- Pinpoint Test K : Insufficient, Erratic Or No Heat
- Pinpoint Test L : The Air Conditioning (A/C) Is Inoperative
- Pinpoint Test M : The Air Conditioning (A/C) Is Always On - A/C Compressor Does Not Cycle
- Pinpoint Test N : The Air Conditioning (A/C) Is Always On - A/C Mode Always Commanded On
- PINPOINT TEST O : Pinpoint Test O: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - LH
- PINPOINT TEST P : Pinpoint Test P: TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - RH
- PINPOINT TEST Q : Pinpoint Test Q: THE BLOWER MOTOR IS INOPERATIVE
- PINPOINT TEST R : Pinpoint Test R: THE BLOWER MOTOR DOES NOT OPERATE CORRECTLY
- PINPOINT TEST S : Pinpoint Test S: DTC U0140:00
- PINPOINT TEST T : DTCs B1A61:15, B1A63:15 AND B1A64:15
- PINPOINT TEST U : Pinpoint Test U: DTC P06A0
- PINPOINT TEST V : DTCs B1A69:11 AND B1A69:15
- Component Tests
- Air Inlet Door Actuator
- Blend Door Actuator - DATC
- Blend Door Actuator - EMTC
- Defrost/Panel/Floor Mode Door Actuator
- Evaporator Temperature Sensor
- In-Vehicle Temperature/Humidity Sensor
- Heater Core - Plugged
- Heater Core - Pressure Test
- Heater Core - Bench Test
- Evaporator/Condenser Core - On-Vehicle Leak Test
- Air Conditioning (A/C) Compressor - External Leak Test
- Climate Control System
- General Procedures
- Air Conditioning (A/C) Clutch Air Gap Adjustment
- Air Conditioning (A/C) Odor Treatment
- Air Conditioning (A/C) System Flushing
- Air Conditioning (A/C) System Recovery, Evacuation and Charging
- Clutch and Clutch Field Coil
- Electronic Leak Detection
- Fluorescent Dye Leak Detection
- Fluorescent Dye Injection Using a R-134a Air Conditioning Service Unit or R-134a Air Conditioning Manifold Gauge Set and Fluorescent Dye Injector - Vehicles Requiring R-134a Addition
- Fluorescent Dye Injection Using a R-134a Fluorescent Dye Injector - Vehicles Not Requiring R-134a Addition
- Fluorescent Dye Detection
- Refrigerant Identification Testing
- Refrigerant Oil Adding
- Compressor Type(s)
- Type 1: (IVDC) Internal Variable Displacement Air Conditioning (A/C) Compressor
- Type 2: (EVDC) External Variable Displacement Air Conditioning (A/C) Compressor
- Type 3: (EVDC) External Variable Displacement Air Conditioning (A/C) Compressor
- Type 4: Fixed Air Conditioning (A/C) Compressor
- Type 1
- Type 2
- Type 3
- Type 4
- Refrigerant Oil Adding
- Oil Injection Using a Fluorescent Dye Injector/Refrigerant Oil Injector Set
- Refrigerant System Tests - 3.5L GTDI
- Refrigerant System Tests - 3.7L Ti-VCT
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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.