7–105 62-11640
20101 NO COMM FROM MICRO TO REMOTE DISPLAY
• ACTIVATION: If alarm 21100 “NO COMM FROM ANY BOARD TO MAIN MICRO“ is not active, and Num-
ber of Remote Panels installed configuration is 1, and no sync responses have been received from the
Remote Panel Module for 10 seconds.
• UNIT CONTROL: Engine and Electric Operation: Alarm only.
• RESET CONDITION: Auto reset when communication is restored, or alarm may be manually reset by
turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the
alarm(s). (Refer to Note 1 in Notes Section, page 7-2.) Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1. Does the Remote Panel Work?
If panel is working, this may be an intermittent alarm caused by a bad connection. Check connection
from Comm Module to Remote Panel. Verify no damage or corrosion in connections.
2. Check for other CAN bus alarms
This alarm may accompany other alarms, complete troubleshooting steps for alarms found. If repairs
have been made and the other alarms have cleared, further troubleshooting may not be required.
3. Check for Power into Remote Panel
Check for battery power at pins C & D. Verify power.
4. Check CAN Circuit to Remote Panel
At the Remote Panel connector, check resistance between pin A & pin B. Verify 120 ohms.
5. Replace Remote Panel with a Known Good Panel
a. If problem re-occurs replace the Comm Module.
b. If problem goes away replace the Remote Panel.
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