What is the reason why the travel motor can move forward but not backward?

[PiperDella]

It is necessary to check the travel motor circuit. More information about the motor is as follows: 1. Overview: "Motor" is the transliteration of the English word "motor", which refers to an electric motor or engine. The working principle is that the energized coil is subjected to force in the magnetic field to rotate, driving the starter rotor to rotate, and the small gear on the rotor drives the engine flywheel to rotate. This technology product was first used in the automotive industry in 1912. 2. Fault analysis: For an engine to start normally, three elements must be present: compression, spark, and mixture. If any of these elements is not working properly, it will cause the engine to fail to start or have difficulty starting. There are many factors that can cause starting faults in electronic fuel injection engines, and these faults usually occur when the battery voltage is normal, the starting system is working properly, the engine has good compression and spark, and the exhaust purification device is functioning normally. Starting faults generally manifest as failure to start or difficulty starting, with the latter further divided into cold starting difficulty and hot starting difficulty.