No Comm from Micro to CCB4 (3REC-C3)
system
Description
No sync responses from CCB4 for 10 seconds, and the unit performs a required shutdown; after two minutes it shuts down all modules except the display.
Activation Conditions
If Alarm 21100 is not active, and Unit is not starting in diesel. No sync responses have been received from the CCB4 Module for 10 seconds.
Unit Behavior
Engine and Electric Operation: Required Shutdown. If alarm remains active for two minutes issue a shutdown command to all modules except the display.
Reset Conditions
Sync response received from the CCB4 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 additional CCB3 / CCB4 and STP3 / STP4 alarms Alarms for CCB3 and CCB4 indicate a problem before CCB3 or at CCB3. Alarms isolated to CCB3 indicate a problem before CCB3 or at CCB3. Alarms isolated to CCB4 indicate a problem between CCB3 and CCB4, or at CCB4. Stepper Alarms isolated to STP3 or STP4 indicate a problem with the associated CCB. 2. Check wiring to CCB4 a. Check wiring. Check for physical damage to harness. Verify no damage, moisture, or corrosion in connectors. b. Check voltage. Verify power at 3REC04 and 3REC15 c. Check CAN connectivity. Verify CAN connectivity at 3REC05 and 3REC17