Truck engine is off, but the ignition key hasn’t been properly cycled to the “on” position

Cycle key message present
Check the display screen for the “Cycle Key” Message

Connection to the truck’s CAN bus has been broken

J1939 interface broken
Check to make sure the J1939 interface between SmatPTO and the truck is still connected. Check to make sure the CAN interface connector wires haven’t been damaged.

CAN baud rate is set incorrectly

(empty)