维修手册
EX3 R400 2020（ ） 款
电路图册
版本： 03.2021
目录
一 电路图识图说明...................................1
1 电路导读............................................................1
二 电路诊断和维修说明...........................5
1 电路诊断和维修基本流程...................................5
1.1 ..................................................5确认故障现象
1.2 .........................................................5电路分析
1.3 .......................................5电路及电气元件检查
1.4 .........................................................5故障维修
1.5 ....................................5验证电路是否正常工作
2 故障诊断设备.....................................................6
2.1 ...............................................6电压表及测试灯
2.2 .............................6自带电源的测试灯及电阻表
2.3 ...........................................7带保险丝的跨接线
2.4 .........................................................7故障分类
3 故障检查............................................................8
3.1 .........................................................8电压检测
3.2 .........................................................8通电测试
3.3 .........................................................9短路测试
3.4 ......................................................9电压降测试
4 电路维修设备...................................................10
4.1 5K ...............................................10Ω可变电阻
4.2 LED ....................................................10测试灯
4.3 ....................................................11气囊检测座
4.4 ...............................................................11探针
4.5 ................................................11端子修理工具
5 接插件端子维修................................................11
三 元件符号及缩略语.............................13
1 元件符号..........................................................13
2 缩略语..............................................................14
四 保险丝和继电器盒.............................16
1 蓄电池电器盒...................................................16
2 前舱电器盒.......................................................17
3 仪表板电器盒...................................................20
五 电源分配图........................................23
1 前舱电器盒电源分配图.....................................23
2 仪表电器盒电源分配图.....................................27
六 接地点汇总........................................32
1 前舱线束接地点汇总........................................32
2 仪表线束接地点汇总........................................36
3 车身线束接地点汇总........................................38
4 顶棚线束接地点汇总........................................41
七 接地点位置图....................................42
1 前舱线束接地点................................................42
2 仪表线束接地点................................................44
3 车身线束接地点................................................45
4 顶棚线束接地点................................................47
八 线束端子位置图.................................48
1 整车高压线束...................................................48
2 前舱线束..........................................................49
3 仪表线束..........................................................50
4 车身线束..........................................................51
5 前保险杠线束...................................................52
6 后保险杠线束...................................................53
7 左前门线束.......................................................54
8 右前门线束.......................................................55
9 左后门线束.......................................................56
10 右后门线束.....................................................57
11 顶棚线束........................................................58
12 后背门线束.....................................................59
13 空调线束........................................................60
14 主驾座椅线束.................................................61
15 整车线束........................................................62
16 整车控制器位置图..........................................63
16.1 ............................64无钥匙进入及启动控制器
16.2 ...................................64水暖式电加热控制器
16.3 ..............................................64压缩机控制器
16.4 ..............................................65空调控制面板
16.5 ...........................................65电池水泵控制器
16.6 ...........................................65电机水泵控制器
16.7 .........................................................66快充口
16.8 ..............................................66高压集成单元
16.9 ............................66充电管理控制器（慢充）
16.10 ................................................67行人警示器
16.11 .....................................67电子真空泵控制器
16.12 .........................................67暖风水泵控制器
16.13 .................................68电子稳定系统控制器
16.14 .................................68电子助力转向控制器
16.15 ...................................................68组合仪表
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