This reference corresponds to current sensor for tration motors.

It's feeded wtih 15v from 1A2 traction controller (yellow and green wires) and send analogic signal from yellow/green wire depending on the current flowing.

1X6 connector;

pin 1-- +15v
pin 2-- output signal
pin 3-- 0v

Output signal:

motor current 0A = output signal 7,5v
motor current 100A = output signal 8v
motor current 200A = output signal 8,5v

For each 100A motors increase in current, the output voltage changes by 0,5v

Regards