MG MG5 Drive Unit

Control

Parking Lock Actuator

The original parking lock actuator (Electronic Parking Brake) EPB uses a three phase brushless motor with three hall sensors as feedback and is controlled by the Electronic Parking Motor Control Unit (EPMCU), which is controlled via CAN. There is an additional sensor on the side with two hall sensors that gives feedback to the car's VCU. As of now, the EPMCU is not reverse engineered.

When the arrows point towards each other, the parking lock is engaged. The pictures shows it disengaged.

Connectors

The connector for the original actuator is currently unknown.

The connector for the feedback sensor fits the VAG part number 4F0973704, which can be easily found as repair pigtails or crimp sets.

Signals

Voltages of the Parking Lock Feedback Sensor

Pin Number	Function	Voltage When Lock Engaged	Voltage When Lock Disengaged
1	VCC	5.0V	5.0V
2	GND	0.0V	0.0V
3	Hall 1	0.8V	2.9V
4	Hall 2	4.0V	1.8V