In Sensor Touring Racks, ETC no longer uses the J2 connector for data input into the CEM.
This is now accomplished through the J3 connector which is the smaller one in the middle of the CEM backplane.
This connector is smaller and much less prone to damage from pulling CEM's in and out and jarring them around as the touring rack travels.
The J3 pinout is the same as the J2 pinout.
J3 pins are numbered as follows:
Pinout is as follows: