HVAC Control System - General Information And Diagnostics
- Specifications
- Description And Operation
- Diagnostic Tests
- Climate Control System
- Notes
- Principles of Operation
- Compressor Anti-Slugging Strategy (CASS)
- The Refrigerant Cycle
- Vacuum System
- Inspection and Verification
- Alternate Diagnostic Methods - HVAC Module - Dual Automatic Temperature Control (DATC)
- DTC Charts
- 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 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 B1676
- Pinpoint Test H: HVAC Functions Verification
- Pinpoint Test I: Incorrect/Erratic Direction of Airflow From Outlets - Manual Climate Control
- Pinpoint Test J: Incorrect/Erratic Direction of Airflow From Outlets - DATC
- 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: The Temperature Control is Inoperative/Does Not Operate Correctly - Manual Climate Control
- Pinpoint Test P: The Blower Motor is Inoperative - Manual Climate Control
- Pinpoint Test Q: The Blower Motor Does Not Operate Correctly - Manual Climate Control
- Pinpoint Test R: The Blower Motor is Inoperative - DATC System
- Pinpoint Test S: The Blower Motor Does Not Operate Correctly - DATC System
- Pinpoint Test T: The Auxiliary Blower Motor is Inoperative
- Pinpoint Test U: The Auxiliary Blower Motor Does Not Operate Correctly Using the Front Auxiliary Blower Motor Switch
- Pinpoint Test V: The Auxiliary Panel/Floor Control is Inoperative Using the Front Auxiliary Climate Controls
- Pinpoint Test W: The Auxiliary Temperature Control is Inoperative Using the Front Auxiliary Climate Controls
- Pinpoint Test X: The Auxiliary Temperature and Panel/Floor Controls are Inoperative Using the Front Auxiliary Climate Controls
- Pinpoint Test Y: Insufficient Air Conditioning (A/C) Cooling
- Component Tests
- Resistor - Blower Motor, Front
- Resistor - Blower Motor, Auxiliary
- Solenoid and Manifold Assembly
- Temperature Sensor - Ambient
- Temperature Sensor - In-Vehicle
- Actuator - Temperature Blend Door, Dual Automatic Temperature Control (DATC)
- Switch - Function Selector
- Climate Control Assembly - Front Auxiliary
- Switch - Blower Motor, Front 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
- Refrigerant System Tests
- 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
- Notes
- Refrigerant System Recovery
- Refrigerant System Evacuation Using an R-134a Refrigerant Management Machine
- Refrigerant System Evacuation Using an R-134a Manifold Gauge Set and Vacuum Pump
- 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 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