Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2008 Lexus IS 350FACTORY OEM SERVICE PROCEDURE
Section 40 (Networking)
WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
- Multiplex Communication System
- Precaution
- Parts Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Terminals Of Ecu
- Diagnosis System
- DTC Check / Clear
- Diagnostic Trouble Code Chart
- DTC B1200 MPX Body ECU Stop
- DTC B1205 AFS ECU Communication Stop
- DTC B1206 P/W Master Switch Communication Stop
- DTC B1207 Smart ECU Stop
- DTC B1208 Passenger Side Outer Mirror ECU
- DTC B1209 Driver Side Outer Mirror
- DTC B1210 Power ECU Stop
- DTC B1213 Tilt and Telescopic ECU Communication Stop
- DTC B1214 Short to B+ in Door System Communication Bus Malfunction; DTC B1215 Short to GND in Door System Communication Bus Malfunction
- DTC B1247 Tire Pressure Monitor Receiver Communication Stop
- DTC B1248 AVC-LAN Communication Impossible
- DTC B1262 A/C ECU Communication Stop
- DTC B1266 Short to B+ in Instrument Panel System Communication Bus Malfunction; DTC B1267 Short to GND in Instrument Panel System Communication Bus Malfunction
- DTC B1271 Combination Meter ECU Communication Stop
- DTC B1272 Power Seat ECU Communication Stop
- DTC B1273 Sliding Roof ECU Communication Stop
- DTC B1278 Combination Switch ECU Communication Stop
- DTC B1279 Rain Sensor Communication Stop
- DTC B1280 Left Side Junction Block ECU Communication Stop
- DTC B1289 Passenger Seat ECU Communication Stop
- DTC B1296 Front Light ECU Communication Stop
- DTC B1297 Clearance Sonar ECU Communication Stop
- Lin Communication System
- Precaution
- Parts Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Terminals Of Ecu
- Diagnosis System
- DTC Check / Clear
- Diagnostic Trouble Code Chart
- DTC B2287 LIN Communication Master Malfunction
- DTC B2785 Communication Malfunction between ECUs Connected by LIN
- DTC B2786 No Response from Steering Lock ECU
- DTC B2789 No Response from ID BOX
- Can Communication System
- Precaution
- Parts Location
- System Diagram
- System Description
- How To Proceed With Troubleshooting
- Problem Symptoms Table
- Terminals Of Ecu
- Diagnosis System
- Fail-Safe Chart
- Skid Control ECU Communication Stop Mode
- Distance Control ECU Communication Stop Mode
- Seat Belt Control ECU Communication Stop Mode
- Power Steering ECU Communication Stop Mode
- Gateway ECU Communication Stop Mode
- Steering Angle Sensor Communication Stop Mode
- Yaw Rate Sensor Communication Stop Mode
- ECM Communication Stop Mode
- Center Airbag Sensor Communication Stop Mode
- Open in CAN Main Bus Line
- Short in CAN Bus Lines
- Short to B+ in CAN Bus Line
- Short to GND in CAN Bus Line
- Open in One Side of CAN Branch Line
- Network Gateway Ecu
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.