Section 249 (Air Conditioning System (Diagnosis))
WARNING: This page is about a different car, the 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
- How To Proceed With Troubleshooting
- Customer Problem Analysis Check
- Pre-Check
- Diagnostic Trouble Code Chart
- Terminals Of Ecu
- Problem Symptoms Table
- Circuit Inspection
- DTC B1411 Room Temperature Sensor Circuit
- DTC B1412 Ambient Temperature Sensor Circuit
- DTC B1413 Evaporator Temperature Sensor circuit
- DTC B1421 Solar Sensor Circuit
- DTC B1422 Compressor Lock Sensor Circuit
- DTC B1423 Pressure Switch Circuit
- DTC B1431 Air Mix Damper Position Sensor Circuit
- DTC B1432 Air Inlet Damper Position Sensor Circuit
- DTC B1433 Air Outlet Damper Position Sensor Circuit
- DTC B1441 Air Mix Damper Control Servomotor Circuit
- DTC B1442 Air Inlet Damper Control Servomotor Circuit
- DTC B1443 Air Outlet Damper Control Servomotor Circuit
- Back Up Power Source Circuit
- IG Power Source Circuit
- ACC Power Source Circuit
- Heater Main Relay Circuit
- Blower Motor Circuit
- Compressor Circuit