DTC B1731: Central Gateway Control Module Can Register Stuck

Outline of diagnosis :

When the microcomputer was reset (power turned ON), a fail-safe judgment error was detected in one of the bus.

Trouble symptom :

CAN communication between the bus for which malfunction (register freeze) was detected and other bus is cut off.

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