HVAC Control Systems: HVAC
- HVAC (Heating, Ventilation, and Air Conditioning)
- Climate Control
- Component Location Index
- A/C Service Tips and Precautions
- A/C Refrigerant Oil Replacement
- A/C Line Replacement
- General Troubleshooting Information
- How to Check for DTCs with the HDS
- How to Use the Self-diagnostic Function with the HDS
- How to Use the Self-diagnostic Function without the HDS
- Checking for DTCs
- Displaying Sensor Inputs at the Climate Control Unit
- Check these items before using the sensor input display mode
- To run the sensor input display mode, follow these steps
- DTC Troubleshooting Index
- Symptom Troubleshooting Index
- System Description
- Circuit Diagram
- DTC Troubleshooting
- DTC B1202 or DTC indicator C and AUTO: Climate Control Unit Internal Error
- DTC B1205, DTC indicator J and AUTO or L and AUTO: Climate Control Unit Lost Communication with Gauge Control Module (TACH) (VSP/NE message)
- DTC B1206 or DTC indicator F and AUTO: Climate Control Unit Lost Communication with Gauge Control Module (TACH) (ECT message)
- DTC B1207 or DTC indicator D and AUTO: Climate Control Unit Lost Communication with Gauge Control Module (TACH) (ILLUMI message)
- DTC B1220 or DTC indicator E and AUTO: A Short in the Recirculation Control Motor Circuit
- DTC B1225 or DTC indicator A: An Open in the In-car Temperature Sensor Circuit
- DTC B1226 or DTC indicator B: A Short in the In-car Temperature Sensor Circuit
- DTC B1227 or DTC indicator C: An Open in the Outside Air Temperature Sensor Circuit
- DTC B1228 or DTC indicator D: A Short in the Outside Air Temperature Sensor Circuit
- DTC B1229 or DTC indicator E: An Open in the Sunlight Sensor Circuit
- DTC B1230 or DTC indicator F: A Short in the Sunlight Sensor Circuit
- DTC B1231 or DTC indicator G: An Open in the Evaporator Temperature Sensor Circuit
- DTC B1232 or DTC indicator H: A Short in the Evaporator Temperature Sensor Circuit
- DTC B1233 or DTC indicator J: An Open in the Air Mix Control Motor Circuit
- DTC B1234 or DTC indicator K: A Short in the Air Mix Control Motor Circuit
- DTC B1235 or DTC indicator L: A Problem in the Air Mix Control Linkage, Door, or Motor
- DTC B1239 or DTC indicator M: An Open or Short in the Mode Control Motor Circuit
- DTC B1240 or DTC indicator N: A Problem in the Mode Control Linkage, Doors, or Motor
- DTC B1241 or DTC indicator P: A Problem in the Blower Motor Circuit
- DTC B2983 or DTC indicator B and AUTO: A Problem in the Recirculation Control Linkage, Door, or Motor
- DTC B2986 or DTC indicator A and AUTO: An Open in the Recirculation Control Motor Circuit
- Climate Control Power and Ground Circuit Troubleshooting
- Navigation Communication Line Circuit Troubleshooting
- Radiator and A/C Condenser Fan Low Speed Circuit Troubleshooting
- A/C Condenser Fan High Speed Circuit Troubleshooting
- A/C Compressor Clutch Circuit Troubleshooting
- A/C Signal Circuit Troubleshooting
- In-car Temperature Sensor Test
- In-car Temperature Sensor Replacement
- Outside Air Temperature Sensor Test
- Outside Air Temperature Sensor Replacement
- Sunlight Sensor Test
- Sunlight Sensor Replacement
- Evaporator Temperature Sensor Test
- Power Transistor Test
- Air Mix Control Motor Test
- Air Mix Control Motor Replacement
- Mode Control Motor Test
- Mode Control Motor Replacement
- Recirculation Control Motor Test
- Recirculation Control Motor Replacement
- Climate Control Unit Removal/ Installation
- Dust and Pollen Filter Replacement
- Blower Unit Removal/Installation
- Blower Unit Component Replacement
- Evaporator Core & Expansion Valve Replacement
- Heater Unit/Core Replacement
- A/C Compressor Replacement
- A/C Compressor Clutch Check
- A/C Compressor Clutch Overhaul
- A/C Compressor Thermal Protector Replacement
- A/C Compressor Relief Valve Replacement
- A/C Condenser Replacement
- Receiver/Dryer Desiccant Replacement
- Refrigerant Recovery
- System Evacuation
- System Charging
- Refrigerant Leak Test
- A/C System Test