No Comm from Micro to Comm Module
system
Description
No sync responses have been received from the Comm Module for 10 seconds under the stated conditions, and the unit alarms only.
Activation Conditions
Alarm 21100 “NO COMM FROM ANY BOARD TO MAIN MICRO” is not active, and Number Of Comm Modules Configuration is set to 1, and no sync responses have been received from the Comm Module for 10 seconds.
Unit Behavior
Engine and Electric Operation: Alarm only.
Reset Conditions
Sync response received from the Comm Module in the past 10 seconds, alarm reset or alarm may be manually reset by turning the unit off, then back on again.
Corrective Actions
1. Check for other CAN bus alarms - This alarm may accompany other alarms, complete the troubleshooting steps for alarms found. If repairs have been made and the other alarms have cleared, further troubleshooting may not be required. 2. Replace Comm Module