CACP : Communication Error PCM

To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.

  • Check dial position of PCM.
  • Set dial to position "0".
  • Verify CAN cable is plugged in. 
  • Remove and reconnect, taking care not to cross thread the connector nut.
  • Verify solid green LED and blinking yellow LED on AMZ.
  • Perform software update procedure.