All codes
Service call
SC674
Remote service / CSS / ARMS modem error
BCommunications
Level B — stop, power-cycle may clear
First check
Remote-service channel failed. If ARMS is not in use, disable the remote SP rather than chasing a modem.
What it means
Remote service / CSS / ARMS modem error. Confirm the exact subcode against the FSM for this serial — meaning can shift by generation.
Likely causes
- Remote-service channel failed. If ARMS is not in use, disable the remote SP rather than chasing a modem.
On-site steps
Parts to have on the truck
- Remote I/F
Related codes
Confirm the subcode and part number in the FSM for this serial. Raicoh is a field companion, not a replacement for the book.