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 MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1302 (HVAC - CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS)
2010 Mercury Mariner Hybrid, AWD
Section 1302 (HVAC - Climate Control System - General Information And Diagnostics)
2010 Mercury Mariner Hybrid, AWDSECTION Section 1302 (HVAC - Climate Control System - General Information And Diagnostics)
WARNING: This page is about a different car, the 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Description And Operation
- Diagnostic Tests
- Climate Control System
- Notes
- Principles of Operation
- Compressor Anti-Slugging Strategy (CASS)
- The Refrigerant Cycle
- Inspection and Verification
- HVAC Module Self-Test
- HVAC Module - Retrieve Continuous DTCs
- HVAC Module Cold Boot Process
- 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: DTC B2266 or B2267
- Pinpoint Test D: DTC B1251 or B1253
- Pinpoint Test E: DTC B1255 or B1257
- Pinpoint Test F: DTC B1259 or B1261
- Pinpoint Test G: DTC B2268 or B2269
- Pinpoint Test H: DTC B1676
- Pinpoint Test I: DTC B113E
- Pinpoint Test J: DTC B113F
- Pinpoint Test K: The Air Inlet Door is Inoperative
- Pinpoint Test L: Incorrect/Erratic Direction of Airflow From Outlets
- Pinpoint Test M: HVAC Functions Verification
- Pinpoint Test N: Insufficient, Erratic or No Heat
- Pinpoint Test O: The Air Conditioning (A/C) is Inoperative
- Pinpoint Test P: The Air Conditioning (A/C) is Always On - A/C Compressor Does Not Cycle
- Pinpoint Test Q: The Air Conditioning (A/C) is Always On - A/C mode always commanded ON
- Pinpoint Test R: The Blower Motor is Inoperative
- Pinpoint Test S: The Blower Motor Does Not Operate Correctly
- Component Tests
- Temperature Sensor - A/C Evaporator Discharge
- Temperature Sensor - Ambient
- Air Inlet Door Actuator
- Panel/Defrost Door Actuator
- Floor Door Actuator
- Blend Door Actuator
- Heater Core
- Heater Core - Plugged
- Heater Core - Pressure Test
- Heater Core - Bench Test
- A/C Evaporator/Condenser Core - On-Vehicle Leak Test
- A/C Compressor - External Leak Test
- Climate Control System
- General Procedures
- Spring Lock Coupling
- Refrigerant System Tests
- Air Conditioning (A/C) Clutch Air Gap Adjustment
- Electronic Leak Detection
- Fluorescent Dye Leak Detection
- Air Conditioning (A/C) System Recovery, Evacuation and Charging
- Notes
- Refrigerant System Recovery
- Refrigerant System Evacuation Using an R-134a Refrigerant Management Machine
- Refrigerant System Evacuation Using an R-134a Manifold Gauge Set
- Refrigerant System Charging Using an R-134a Refrigerant Management Machine
- Refrigerant System Charging Using an R-134a Manifold Gauge Set and Automatic Refrigerant Charging Motor
- Air Conditioning (A/C) System Flushing
- Refrigerant System Filtering Following Air Conditioning (A/C) Compressor Installation
- Refrigerant Oil Adding
- Refrigerant Identification Testing
- Air Conditioning (A/C) Odor Treatment
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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.