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B1350 B0xxx · 车身（B） 高严重度
Airbag Deployment Loop / Squib Circuit Resistance Out of Range
Resistance in a restraint deployment loop is outside specification. Even a small extra resistance can prevent deployment.
严重程度说明： 高——立即停车诊断，继续行驶有扩大损坏的风险
你会注意到的故障现象
- Airbag lamp on
- Restraint system disabled
常见原因
按可能性从高到低排列——从最上面开始查。
- 1 Corroded or loose connector terminal
- 2 Partially broken wire
- 3 Aftermarket audio or dash work disturbing the harness
- 4 Non-approved component fitted
如何排查
先做花钱最少、侵入最小的检查——大多数这类码不是零件问题。
- ✓ Follow the airbag safety procedure before touching the circuit.
- ✓ Read the stored resistance value from the ECU and compare with specification.
- ✓ Check every connector in the flagged loop for fretting corrosion.
- ✓ Look for evidence of previous aftermarket work.
维修方案
- Clean or replace the affected connector
- Repair the wiring
- Replace non-approved components with correct parts
B1350 —— 常见问题
Can a slightly high resistance really matter? +
Yes. Deployment energy is calculated for the specified loop resistance; extra resistance can mean no deployment.
Can I solder the repair? +
Follow the manufacturer's guidance — many require crimped splices and prohibit solder in restraint circuits.