Travel Speed Range Function
ECM 将允许操作员选择高行驶速度或低行驶速度。 行驶速度是从软开关面板 (SSP) 上的行驶速度开关中选择。 开关状态将通过 CAN 数据链路提供给 ECM。 默认行驶速度为高行驶速度。 为使 ECM 能够启用低行驶速度，必须出现下列状态：
- 低行驶速度是从 SSP 上的行驶速度开关中选择。
- 分开停车制动器。
- 左侧控制台降下。
行驶踏板以机械方式连接至行驶先导压力系统。 当行驶踏板在前进或后退方向踩下时，行驶先导压力启用。 当列出的条件正确时，ECM 将通电变速箱换档电磁阀 1，以将变速箱设置为低转速。 当选择并激活默认高转速时，ECM 将通电变速箱换档电磁阀 2。
Caterpillar Information System:
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