Section 779 (Multiplex Communication System - Diagnosis)
WARNING: This page is about a different car, the 2004 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 Table
- Parts Location
- Terminals Of Ecu
- Circuit Inspection
- DTC B1211/11: Power Window Master Switch Ecu Communication Stop
- Inspection Procedure
- DTC B1214/14: Communication Bus Malfunction (+B Short); DTC B1215/15 Communication Bus Malfunction (GND Short)
- DTC B1241/41: Body Ecu Switch Circuit Diagnosis
- DTC B1242/42: Wireless Door Lock Tuner Circuit Malfunction
- DTC B1244/44: Light Sensor Circuit Malfunction
- DTC B1261/61: ECM Communication Stop
- DTC B1262/62: A/C Ecu Communication Stop
- DTC B1269/69: Theft Deterrent Ecu Communication Stop
- DTC B1271/71: Combinations Meter Ecu Communication Stop