All systems of the automatic concrete loading mixer are normal, but they can not be started. What's the reason? Next, we'll talk about the key points of diagnosis.

1.确定堵塞的原因。为了这种混凝土自动上料混凝土搅拌车不会引起这种故障的诊断，必须对电池进行测试。您需要知道电池电量是否不足。

1. Determine the cause of the blockage. In order to solve this problem, the battery must be tested first. You need to know if the battery is low.

2.检测并引导系统。检测启动系统的电路。对于基本配置，用于启动系统的电路通常包括电池，启动马达和连接这些组件的电缆。此外，焚烧开关，启动继电器或螺线管以及车辆防盗系统也是启动系统的重要组成部分。

2. Detect and boot the system. Check the circuit of the starting system. For a basic configuration, the circuit used to start the system usually includes a battery, a starter motor, and cables to connect these components. In addition, incineration switch, starting relay or solenoid and vehicle anti-theft system are also important parts of the starting system.

3.滑动现象在焚烧同步带的检测期间发生，并且不会产生火花，因此无法启动。

3. The sliding phenomenon occurs during the detection of the incineration synchronous belt, and there is no spark, so it can not be started.

4.测试火花质量。您可以卸下焚烧线圈并使用电火花探测器检测火花是否正常。

4. Test spark quality. You can remove the incineration coil and use the spark detector to detect whether the spark is normal.

5.测试燃油系统。燃油系统诊断可分为两部分：燃油供应系统诊断和喷油器回路诊断。可以通过测量燃油流量和压力来检测燃油供应系统。测量燃油流量的一个好方法是加载燃油供应管线并测试管线。

5. Test the fuel system. Fuel system diagnosis can be divided into two parts: fuel supply system diagnosis and injector circuit diagnosis. The fuel supply system can be detected by measuring the fuel flow and pressure. A good way to measure fuel flow is to load the fuel supply line and test the line.

6.防盗系统检测：防盗系统也出现在一些经常被忽视的供油系统中。一些混凝土自动上料混凝土搅拌车制造商在防盗系统数据流中包含参数标识。在许多型号中，防盗系统模块未经适当的初始化就被更换。

6. Anti theft system detection: the anti-theft system also appears in some oil supply systems which are often ignored. Some automatic concrete loading truck manufacturers include parameter identification in the anti-theft system data stream. In many models, the anti-theft system module is replaced without proper initialization.

当然，未提及的其他方面也会对其产生影响。

Of course, other aspects not mentioned will also affect it.