Pingyang chunde auto parts co., LTD. : guide to ignition switch device (II)

　　Four-stop ignition switch
　　Four - stop ignition switches are widely used in modern cars. Four gear type ignition switch LOCK, ACC, ON, START (or 0, Ⅰ Ⅱ Ⅲ) four gears (below), ON the basis of the three tests are added a ACC components work in electrical attachment, other unchanged.
　　After locking the car, the key will be in the LOCK state. At this time, the key not only locks the steering wheel shaft, but also cuts off the power supply of the whole car.
　　ACC state is to switch on the power supply of some automobile electrical appliances, such as audio, lights, etc.
　　When driving normally, the key is in the ON state, and all the circuits of the whole car are in the working state.
　　START or ST block is the engine START stop, START and release the ignition switch, the ignition switch will automatically restore to ON block.
　　Shown below to the Great Wall at four gear type ignition switch schematic diagram and circuit diagram, the ignition switch BT1, BT2 terminal for the power supply input, ACC unloading relay output terminals to ACC, IG2 terminals output to IG unloading relay air conditioning, IG1 terminal relay output to the generator and engine ECU and pump, ST terminal for the start control, K1 terminal controller output to the central door lock, K2 for the grounding terminal.
　　This paper is organized by pingyang chunde auto parts co., LTD