secondary control unit的意思|示意

The secondary sheave rotation sensor (41) detects a rotational speed (54) of the output shaft (22d) and outputs to the control unit (9).

次级带轮旋转传感器（41）检测输出轴 （22）的转速（54）并将其输出到控制单元（9）。

These functions enable a higher-level unit, such as a body control module to monitor the state of the electronic-control unit and prevent secondary problems due to continuing current flow.

上述功能可使车体控制模块等高级单元得以实现，并可监测电子控制单元的状态和防止电流引发的其他问题。