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What are the reasons for the central locking system failure and the car door not opening?

1 Answers

MacElijah

07/29/25 11:46am

Central locking system failure and the car door not opening are caused by: 1. The central locking system of the car door being in the open state; 2. The door lock block cable malfunction. The central locking system refers to a control device that can simultaneously control the closing and opening of all car doors. The function of the central locking system is to remotely open and lock the doors without inserting the key into the keyhole, which consists of a door lock switch, actuator, and controller. The working principle of the central locking system is: the process of locking and unlocking is completed through the positive and negative power conversion of the motor. The central locking system is composed of two double-contact relays and control circuits. When the unlocking signal is received, the unlocking relay closes, and the current forms a circuit through the motor here. The central locking system consists of two switches, a door lock relay, five bidirectional DC motors, and fuse components.

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