概述 .........................................................147 1、部件在整车位置信息 ........................................147 2、计量泵电气原理及线束信息 ..................................147 3、故障诊断及排查步骤 ........................................148 故障代码3363/18 尿素罐解冻失败故障 151概述 .........................................................151 1、部件在整车位置信息 ........................................151 2、计量泵电气原理及线束信息 ..................................151 3、故障诊断及排查步骤 ........................................152 故障代码3363/7 尿素罐加热温升故障 154概述 .........................................................154 1、部件在整车位置信息 ........................................154 2、计量泵电气原理及线束信息 ..................................154 3、故障诊断及排查步骤 ........................................155 东风商用车技术中心电气开发部 Electric Engineering Department DongfengCommercial Vehicle Technical Center,DFL 故障代码3363/2尿素罐加热电磁阀卡滞故障 157概述 .........................................................157 1、部件在整车位置信息 ........................................157 2、计量泵电气原理及线束信息 ........