Abstract : the supplemental restraint system on benz car is composed of safety air bag system and safety belt retractor system . this paper introduces the structure characteristics , working principle and control circuit and expounds the fault code reading and delating methods 文摘:奔驰轿车装备的辅助防护系统由安全气囊系统和座椅安全带收紧系统2部分组成,介绍了其结构特点、工作原理及控制电路,阐述了读取与清除故障代码的诊断测试方法。