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.
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HOMESERVICE MANUALSTOYOTA2007HIGHLANDER HYBRID, FWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESMULTIPLEX COMMUNICATION (HYBRID)
2007 Toyota Highlander Hybrid, FWD
Multiplex Communication (Hybrid)
2007 Toyota Highlander Hybrid, FWDSECTION Multiplex Communication (Hybrid)
- 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 B1211 Driver Door 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 B1248 AVC-LAN Communication Impossible
- DTC B1262 A/C ECU Communication Stop
- DTC B1269 Theft Deterrent ECU Communication Stop
- DTC B1271 Combination Meter ECU Communication Stop
- DTC B1273 Sliding Roof ECU Communication Stop
- DTC B1281 Airbag ECU Communication Stop
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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.