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 MANUALSTOYOTA20054RUNNER SR5, 4.7 T, RWDREPAIR AND DIAGNOSISGENERAL INFORMATIONDTC INDEXMULTIPLEX COMMUNICATION SYSTEM DTCS
2005 Toyota 4Runner SR5, 4.7 T, RWD
Multiplex Communication System DTCS
2005 Toyota 4Runner SR5, 4.7 T, RWDSECTION Multiplex Communication System DTCS
MULTIPLEX COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B1214, B1215 | DOOR SYSTEM COMMUNICATION BUS MALFUNCTION (+B SHORT/GND SHORT) |
| B1269 | THEFT DETERRENT ECU COMMUNICATION STOP |
| B1287 | BACK DOOR ECU COMMUNICATION STOP |
RENDER: 1.0x
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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.