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
- DTC Troubleshooting Index
- Symptom Troubleshooting Index
- System Description
- Circuit Diagram
- DTC Troubleshooting
- DTC B1202 or EEPROM error is indicated: Climate Control Unit Internal Error
- DTC B1205 or Vehicle speed error or ENGNe error is indicated: Climate Control Unit Lost Communication with Gauge Control Module (VSP/NE message); DTC B1206 or TW sensor error is indicated: Climate Control Unit Lost Communication with Gauge Control Module (ECT message); DTC B1207: Climate Control Unit Lost Communication with Gauge Control Module (ILLUMI message); DTC B1208: Climate Control Unit Lost Communication with Keyless Access Control Unit (FOB ID message)
- DTC B1225 or TR sensor open is indicated: An Open in the In-car Temperature Sensor Circuit
- DTC B1226 or TR sensor short is indicated: A Short in the In-car Temperature Sensor Circuit
- DTC B1227 or TAM sensor open is indicated: An Open in the Outside Air Temperature Sensor Circuit
- DTC B1228 or TAM sensor short is indicated: A Short in the Outside Air Temperature Sensor Circuit
- DTC B1229 or TS sensor open is indicated: An Open in the Sunlight Sensor Circuit
- DTC B1230 or TS sensor short is indicated: A Short in the Sunlight Sensor Circuit
- DTC B1231 or TE sensor open is indicated: An Open in the Evaporator Temperature Sensor Circuit
- DTC B1232 or TE sensor short is indicated: A Short in the Evaporator Temperature Sensor Circuit
- DTC B1235 or DrA/M motor lock is indicated: A Problem in the Driver's Air Mix Control Linkage, Door, or Motor
- DTC B1238 or PaA/M motor lock is indicated: A Problem in the Passenger's Air Mix Control Linkage, Door, or Motor
- DTC B1240 or Mode motor lock is indicated: A Problem in the Mode Control Linkage, Doors, or Motor
- DTC B1241 or Blower motor lock is indicated: A Problem in the Blower Motor Circuit
- DTC B2975 or DrVENT sensor open is indicated: An Open in the Driver's Vent Air Temperature Sensor Circuit
- DTC B2976 or DrVENT sensor short is indicated: A Short in the Driver's Vent Air Temperature Sensor Circuit
- DTC B2977 or Pa VENT sensor open is indicated: An Open in the Passenger's Vent Air Temperature Sensor Circuit
- DTC B2978 or Pa VENT sensor short is indicated: A Short in the Passenger's Vent Air Temperature Sensor Circuit
- DTC B2979 or PRE sensor open is indicated: An Open in the A/C Pressure Sensor Circuit
- DTC B2980 or PRE sensor short is indicated: A short in the A/C Pressure Sensor Circuit
- DTC B2981 or NAVI communication error is indicated: Climate Control Unit Lost Communication with Navigation Unit
- DTC B2982 or BUS communication error is indicated: Climate Control Unit Lost Communication with Each Control Motor
- DTC B2983 or R/F motor lock is indicated: A Problem in the Recirculation Control Linkage, Door, or Motor
- DTC B2984 or DrC/V motor lock is indicated: A Problem in the Driver's Cool Vent Control Linkage, Door, or Motor
- DTC B2985 or PaC/V motor lock is indicated: A Problem in the Passenger's Cool Vent Control Linkage, Door, or Motor
- DTC B2987 or RrVEISIT motor lock is indicated: A Problem in the Rear Vent Control Linkage, Door, or Motor
- DTC B2991 or Audio communication error is indicated: Climate Control Unit Lost Communication with Audio Unit
- COMP Solenoid error is indicated: A Problem in the Variable Capacity Control Solenoid Valve Circuit
- Control Motor Power Supply Circuit Troubleshooting
- Aspirator Fan Circuit Troubleshooting
- Climate Control Power and Ground Circuit Troubleshooting
- A/C Compressor Clutch Circuit Troubleshooting
- In-car Temperature Sensor Test
- In-car Temperature Sensor Replacement
- Vent Air Temperature Sensor Test
- Driver's Vent Air Temperature Sensor Replacement
- Passenger's Vent Air Temperature Sensor Replacement
- Outside Air Temperature Sensor Test
- Outside Air Temperature Sensor Replacement
- Sunlight Sensor Test
- Sunlight Sensor Replacement
- Evaporator Temperature Sensor Test
- Evaporator Temperature Sensor Replacement
- Power Transistor Test
- Driver's Air Mix Control Motor Test
- Driver's Air Mix Control Motor Replacement
- Passenger's Air Mix Control Motor Test
- Passenger's Air Mix Control Motor Replacement
- Driver's Cool Vent Control Motor Test
- Driver's Cool Vent Control Motor Replacement
- Passenger's Cool Vent Control Motor Test
- Passenger's Cool Vent Control Motor Replacement
- Mode Control Motor Test
- Mode Control Motor Replacement
- Recirculation Control Motor Test
- Recirculation Control Motor Replacement
- Rear Vent Control Motor Test
- Rear Vent Control Motor Replacement
- Climate Control Unit Removal/Installation
- Climate Control Panel Bulb Replacement
- Dust and Pollen Filter Replacement
- Blower Unit Removal/Installation
- Blower Unit Component Replacement
- Evaporator Core & Expansion Valve Replacement
- Expansion Valve Replacement
- Heater Unit/Core Replacement
- Heater Valve Cable Adjustment
- A/C Compressor Replacement
- A/C Compressor Clutch Check
- A/C Compressor Clutch Overhaul
- 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