车型:雪佛兰乐风。VIN:LSGTC52M08Y××××××。行驶里程:81263km。故障现象:乐风来店时的现象为仪表上显示水温最高。故障诊断:技师用T 2诊断冷却风扇继电器1控制电路(历史故障),如图1所示,删除故障码后重启发动机,故障再现。查看电路图(如图2所示)检查低速控制。根据故障码检查继电器,电阻 Model: Chevrolet Le style. VIN: LSGTC52M08Y ××××××. Mileage: 81263km. Symptom: Le style to the phenomenon of the highest temperature display on the instrument. Fault Diagnosis: Technician uses T 2 to diagnose the cooling fan relay 1 control circuit (historical fault), as shown in Figure 1, after restarting the engine after deleting the fault code, the fault is reproduced. Check the circuit diagram (shown in Figure 2) to check low-speed control. According to the fault code check relay, resistance