DTC B1731: Central Gateway Control Module Can Register Stuck

Outline of diagnosis:

When the microcomputer was reset (power turned ON), a failsafe judgment error was detected in one of the CH.

Trouble symptom:

CAN sending and receiving (including Ack) stops at the CH where register freeze occurred.

NOTE: If this DTC was detected, replace the central gateway control module. Ref. to BODY CONTROL/COMMUNICATION SYSTEM>GATEWAY CONTROL MODULE .