HVAC Climate Control System-General Information And Diagnostics
- Specifications
- Description And Operation
- Diagnosis And Testing
- Climate Control System
- Notes
- Inspection and Verification
- Diagnostic Trouble Code Table
- Electronic Automatic Temperature Control Module Self-Test
- Electronic Automatic Temperature Control Module - Retrieve Continuous DTCs
- Diagnostic Trouble Code Index
- Symptom Table
- Pinpoint Tests
- Pinpoint Test A: DTC B2266 Or DTC B2267 - Blend Door Failure Or Short
- Pinpoint Test B: DTC B1251 Or DTC B1253 - A/C In-Car Temperature Sensor Open Circuit Or Short To Ground
- Pinpoint Test C: DTC B1255 Or DTC B1257 - A/C Ambient Temperature Sensor Open Circuit Or Short To Ground
- Pinpoint Test D: DTC B1259 Or DTC B1261 - Solar Radiation Sensor Open Circuit Or Short To Ground
- Pinpoint Test E: DTC B2268 Or DTC B2269 - Steering Wheel Control Switch Open Circuit Or Short To Ground
- Pinpoint Test F: DTC B2411, DTC B2412 Or DTC B2413 - A/C Humidity Sensor Open Circuit, Short To Ground Or Failure
- Pinpoint Test G: No Communication With The Electronic Automatic Temperature Control Module
- Pinpoint Test H: The EATC System Is Inoperative, Intermittent Or Incorrect Operation
- Pinpoint Test I: Incorrect/Erratic Direction Of Air Flow From Outlets - Manual Climate Control
- Pinpoint Test J: Incorrect/Erratic Direction Of Air Flow From Outlets - EATC
- Pinpoint Test K: Insufficient, Erratic Or No Heat
- Pinpoint Test L: The Air Conditioning (A/C) Is Inoperative/Does Not Operate Correctly
- Pinpoint Test M: The Air Conditioning (A/C) Is Always On
- Pinpoint Test N: Temperature Control Is inoperative/Does Not Operate Correctly - Manual Climate Control
- Pinpoint Test O: The Blower Motor Is inoperative - Manual Climate Control
- Pinpoint Test P: The Blower Motor Does Not Operate Correctly- Manual Climate Control
- Pinpoint Test Q: The Blower Motor Is Inoperative - EATC
- Pinpoint Test R: The Blower Motor Does Not operate Correctly - EATC
- Pinpoint Test S: The Auxiliary Blower Motor Is Inoperative
- Pinpoint Test T: The Auxiliary Blower Motor Does Not Operate Correctly Using The Front Auxiliary Blower Motor Switch
- Pinpoint Test U: The Auxiliary Blower Motor Does Not Operate Correctly Using The Rear Auxiliary Blower Motor Switch
- Pinpoint Test V: The Panel/Floor Control Is Inoperative Using The Front Auxiliary Climate Controls
- Pinpoint Test W: The Panel/Floor Control Is Inoperative Using The Rear Auxilliary Climate Controls
- Pinpoint Test X: The Temperature Control Is Inoperative Using The Front Auxilliary Climate Controls
- Pinpoint Test Y: The Temperature Control Is Inoperative Using The Rear Auxilliary Climate Controls
- Pinpoint Test Z: The Temperature and Panel/Floor Controls Are Inoperative Using The Front Auxilliary Climate Controls
- Pinpoint Test AA: The Temperature and Panel/Floor Controls Are Inoperative Using The Rear Auxilliary Controls
- Pinpoint Test AB: Insufficient Air Conditioning (A/C) Cooling
- Component Tests
- Resistor - Blower Motor
- Resistor - Auxiliary Blower Motor
- Solenoid and Manifold
- Temperature Sensor - Ambient
- Temperature Sensor - In-Vehicle, Expedition
- Temperature Sensor - In-Vehicle, Navigator
- Switch - Function Selector
- Climate Control Assembly - Front Auxiliary
- Climate Control Assembly - Rear Auxiliary
- 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
- Air Conditioning Line (Peanut) Fitting
- Refrigerant System Tests
- Heater Hose Coupling
- Air Conditioning (A/C) Clutch Air Gap Adjustment
- Electronic Leak Detection
- Fluorescent Dye Leak Detection
- Air Conditioning (A/C) System Flushing
- Air Conditioning (A/C) System Recovery, Evacuation and Charging
- Refrigerant System Filtering Following Air Conditioning (A/C) Compressor Installation
- Refrigerant Oil Adding
- Refrigerant Identification Testing
- Vacuum Hose Repair - Mini-Tube
- Air Conditioning (A/C) Odor Treatment