3 Piin Deutsch J1939 Backbone Connector 

Pin

Value

A

CAN/J1939 Hi

B

CAN/J1939 Lo

C

CAN/J1939 Shield

FCAR Jumper Box to 3 Pin mapping:

  • Pin 1   Pin 6 pin out to A (CAN+J1939 Hi, 2.6v) Pin 10 - Power LED  
    Pin 2   Pin 7   Pin 11   Pin 14 pin out to B (CAN/J1939 - 2.4v)
    Pin 3   Pin 8   Pin 12   Pin 15  
    Pin 4 (GND-) pin out to battery nagative Pin 9   Pin 13   Pin 16 (VCC+) pin out to Battery 12v positive

in short, connect pin A to 6 and pin B to 14, pin C is CAN Shield, you can pin out to Pin 8. 

 

FCAR jumperbox (breakout box)

When you plug property cord, you might try to use Diesel OBD at first scan to see whether it will communicate and then try to use property program to scan. From ECU information page, you will see if this is cummins engine.

If this is cummins engine, please select Diesel Engine and Cummins program to have all bi-directional feature.