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.
2004 Toyota Highlander Limited, AWDFACTORY OEM SERVICE PROCEDURE
Body Multiplex Control Systems DTCS
BODY MULTIPLEX CONTROL SYSTEMS DIAGNOSTIC TROUBLE CODES (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B1200 | Normal |
| B1211 | Power window regulator master switch assy (door ECU) communication stop |
| B1214 | Communication bus +B battery system short |
| B1215 | Communication bus (body ground) short |
| B1241 | Body ECU switch circuit diagnosis |
| B1261 | ECM communication stop |
| B1262 | Air conditioner amplifier assy (A/C ECU) communication stop |
| B1269 | Theft warning ECU assy (theft deterrent ECU) communication stop |
| B1271 | Combination meter assy (meter ECU) communication stop |
| B1273 | Sliding roof drive gear sub-assy (sliding roof ECU) communication stop |
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.