DTC B278B: CAN Control Module Stuck
DTC detecting condition:
When mismatch is detected two consecutive times for every Wake Up of the microcomputer after the mismatch of the data written into the CAN check-targeted resistor and the read data is detected after resetting.
(When mismatch is detected three consecutive times in total: once at resetting + twice at microcomputer Wake UP)
Trouble symptom:
Operation is performed using the previous value information as true. However, basically the system becomes inoperative.
NOTE:
Perform the diagnosis for LAN system. Refer to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE
.