Where is the central locking control box located in the JAC Tongyue?
2 Answers
The remote control box for the central locking system in the JAC Tongyue is located under the hood, inside the engine compartment, near the battery at the upper left corner of the engine. To access it, open the driver's door of the JAC Tongyue RS, pull the hood release lever located on the left side of the driver's footwell, and lift the hood upwards. Use the support rod to secure the hood in place, ensuring it is firmly supported to prevent any hazards during operation. The central locking remote control box can then be found in this area. The remote control box is a command device that changes the wiring of the main or control circuit and adjusts the resistance value in the circuit according to a predetermined sequence to control the motor's start, speed adjustment, braking, and reverse functions. The central locking system, also known as the door lock actuator, primarily consists of a motor and transmission gears, with varying appearances. Its working principle involves the motor's positive and negative power conversion to complete the locking and unlocking process. When an unlock signal is received, the unlock relay engages, forming a current loop through the motor, causing the central lock to activate. Conversely, when a lock signal is received, another relay engages, reversing the current to form a loop and activate the central lock. The purpose of installing a central locking system in an anti-theft device is to control the vehicle's original central lock, achieving the goal of remote locking and unlocking.
When working on numerous JAC Tongyue vehicles, I've noticed that the central locking control box is typically hidden beneath the dashboard, right next to the driver's seat. You'll need to remove the lower plastic cover first, possibly requiring a screwdriver and small wrench to expose it. This box controls all the door lock operations, and if it accidentally gets wet or accumulates too much dust, it can easily malfunction—resulting in unresponsive locks or erratic behavior. I've replaced it a few times myself and recommend turning off the power before starting to avoid short-circuiting and damaging the wiring. If you're not familiar with the process, it's best to let a professional handle it—though the location is standard, the space is tight, making it easy to get things stuck. For older vehicles, the position might be slightly adjusted, but it generally remains in the knee-area region. Regular cleaning can help extend its lifespan.
