Section 1175 (HVAC Control System - General Information And Diagnostics)
WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Description And Operation
- Climate Control System
- Diagnostic Tests
- Climate Control System
- Notes
- Principles of Operation
- Compressor Anti-Slugging Strategy (CASS)
- The Refrigerant Cycle
- Inspection and Verification
- Alternate Diagnostic Methods - HVAC Module - Dual Automatic Temperature Control (DATC) Only
- HVAC Module Cold Boot Process
- PCM DTC Table
- HVAC Module DTC Table
- Symptom Chart - Climate Control Systems
- Symptom Chart - NVH
- Pinpoint Tests
- Notes
- Pinpoint Test A: DTC P0532 or P0533
- Pinpoint Test B: DTC P0645
- Pinpoint Test C: DTC B1251 or B1253
- Pinpoint Test D: DTC B1255 or B1257
- Pinpoint Test E: DTC B2426, B2427, B2795 or B2796
- Pinpoint Test F: DTC B2826 or B2827
- Pinpoint Test G: HVAC Functions Verification
- Pinpoint Test H: The Air Inlet Door is Inoperative
- Pinpoint Test I: Incorrect/Erratic Direction of Airflow From Outlets
- Pinpoint Test J: Insufficient, Erratic or No Heat
- Pinpoint Test K: The Air Conditioning (A/C) is Inoperative
- Pinpoint Test L: The Air Conditioning (A/C) is Always On - A/C Compressor Does Not Cycle
- Pinpoint Test M: The Air Conditioning (A/C) is Always On - A/C Mode Always Commanded ON
- Pinpoint Test N: Temperature Control is Inoperative/Does Not Operate Correctly
- Pinpoint Test O: The Blower Motor is Inoperative - EMTC
- Pinpoint Test P: The Blower Motor Does Not Operate Correctly - EMTC
- Pinpoint Test Q: The Blower Motor is Inoperative - DATC
- Pinpoint Test R: The Blower Motor Does Not Operate Correctly - DATC
- Pinpoint Test S: The Auxiliary Blower Motor is Inoperative
- Pinpoint Test T: The Auxiliary Blower Motor Does Not Operate Correctly
- Pinpoint Test U: The Auxiliary Temperature Control is Inoperative/Does Not Operate Correctly Using the Front/Rear Auxiliary Climate Controls
- Pinpoint Test V: The Auxiliary Panel/Floor Control is Inoperative/Does Not Operate Correctly Using the Front/Rear Auxiliary Climate Controls
- Pinpoint Test W: The Auxiliary Temperature, Panel/Floor and Blower Motor Controls are Inoperative/Do Not Operate Correctly Using the Front/Rear Auxiliary Climate Controls
- Pinpoint Test X: DTC B1317 or B1318
- Component Tests
- Resistor - Blower Motor
- Resistor - Auxiliary Blower Motor
- Temperature Sensor - In-Vehicle
- Temperature Sensor - Ambient
- Temperature Sensor - Evaporator Discharge
- Air Inlet Door Actuator
- Floor/Defrost/Panel Door Actuator
- Blend Door Actuator - Electronic Manual Temperature Control (EMTC)
- Blend Door Actuator - Dual Automatic Temperature Control (DATC)
- Auxiliary Temperature Door Actuator
- Auxiliary Panel/Floor Door Actuator
- Heater Core
- Heater Core - Plugged
- Heater Core - Pressure Test
- Heater Core - Bench Test
- Evaporator/Condenser Core - On-Vehicle Leak Test
- A/C Compressor - External Leak Test
- Climate Control System
- General Procedures
- Air Conditioning (A/C) Clutch Air Gap Adjustment
- Fluorescent Dye Leak Detection
- Electronic Leak Detection
- Air Conditioning (A/C) System Flushing
- 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
- Refrigerant Oil Adding
- Refrigerant Identification Testing
- Air Conditioning (A/C) Odor Treatment