Section 477 (Air Conditioning System - Diagnosis)
WARNING: This page is about a different car, the 2003 Lexus LS 430. 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 B1411/11 Room Temperature Sensor Circuit
- DTC B1412/12 Ambient Temperature Sensor Circuit
- DTC B1413/13 Evaporator Temperature Sensor Circuit
- DTC B1415/15 Air Duct Sensor Circuit (Driver Side)
- DTC B1416/16 Air Duct Sensor Circuit (Passenger Side)
- DTC B1418/18 Exhaust Gas Sensor Circuit (HC, CO)
- DTC B1421/21 Solar Sensor Circuit (Passenger Side)
- DTC B1422/22 Compressor Lock Sensor Circuit
- DTC B1423/23 Pressure Sensor Circuit
- DTC B1424/24 Solar Sensor Circuit (Driver Side)
- DTC B1428/28 Solar Sensor Circuit (Rear Side)
- DTC B1432/32 Air Inlet Damper Position Sensor Circuit, DTC B1442/42 Air Inlet Damper Position Sensor Circuit
- DTC B1434/34 Cool Air Bypass Damper Position Sensor Circuit (Driver Side)
- DTC B1435/35 Cool Air Bypass Damper Position Sensor Circuit (Passenger Side)
- DTC B1442/42 Air Inlet Damper Control Servomotor Circuit
- DTC B1451/51 Solenoid of the Externally Changeable Compressor Circuit
- DTC B1461/61 Exhaust Gas Sensor Circuit (NOx)
- Cool Air Bypass Damper Control Servomotor Circuit (Driver Side)
- Cool Air Bypass Damper Control Servomotor Circuit (Passenger Side)
- Water Valve Control Servomotor Circuit
- Air Vent Mode Damper Control Servomotor Circuit
- Air Mix Damper Control Servomotor Circuit
- Back Up Power Source Circuit
- IG Power Source Circuit
- ACC Power Source Circuit
- Blower Motor Circuit
- Compressor Circuit
- Rear Back Up Power Source Circuit
- Rear IG Power Source Circuit
- Rear Blower Motor Circuit
- Exhaust Damper Control Servomotor Circuit
- Rear Magnetic Valve Circuit
- Smoke Sensor Circuit
- Intelligent Swing Register Circuit