The G4X S15Link Plug-in ECU has two CAN buses. These CAN buses exist to support aftermarket CAN devices.
CAN bus 1 uses a 5 pin connector and is labeled on the ECU as 'CAN 1/RS232'.
If using this connector for CAN ensure the cable being used doesn't have Serial wires connected as this can act as an aerial and prevent USB communications from working.
CAN 1/RS232 Connector  | 
||
Pin  | 
Function  | 
Colour  | 
1  | 
Comms GND  | 
Brown  | 
2  | 
CAN1 L  | 
Green  | 
3  | 
CAN1 H  | 
White  | 
4  | 
RS232-RX  | 
Grey  | 
5  | 
RS232-TX  | 
Yellow  | 
CAN bus 2 uses a 5 pin connector and is labeled on the ECU as 'CAN 2/OBD'.
CAN 2/OBD Connector  | 
||
Pin  | 
Function  | 
Colour  | 
1  | 
GND  | 
Brown  | 
2  | 
CAN2 L  | 
Green  | 
3  | 
CAN2 H  | 
White  | 
4  | 
NC  | 
Grey  | 
5  | 
+14V  | 
Yellow  | 
To learn more about CAN see PCLink help.


