What is the reason for the HAVAL H6 hill descent control failure?

[Duarte]

HAVAL H6 hill descent control failure is caused by faults in the PT-CAN related circuits or a node, and virtual connections in the gateway internal circuits leading to low network voltage. The specific details are as follows: Faults in the PT-CAN related circuits or a node: Using a fault detector, the electronic parking brake control module (EPB) stored one current fault code: U111281 ESP CAN signal failure. The body stability control module (ESP) also stored one current fault code: U100104 CAN passive error. The engine control module (ECM) stored two historical fault codes: U01018 lost communication with TCU and U012687 lost communication with SAS; no other modules stored fault codes. Analyzing the fault codes, it is inferred that there is a fault in the PT-CAN related circuits or a node. Virtual connections in the gateway internal circuits leading to low network voltage: When HDC is activated and the vehicle enters a steep slope, engine braking itself can provide a considerable degree of deceleration effect without the risk of wheel lock-up. When the slope is too steep and engine braking is insufficient to maintain the speed limit, HDC can use the ABS system to reduce the increasing speed, maintaining a stable and safe downhill speed. If the driver needs to steer to avoid obstacles during the downhill process, the HDC system will detect this and further reduce the speed limit to 6.4km/h to ensure full control of the vehicle.