General Information

Body Control Module
B1690 CAN timeout between IPM and SJB - General Information

Component Location





General Description

This DTC sets when a communication error between SJB and other control units occur.
** Body CAN communication Control Units : BCM(Body Control Module), CLU(Cluster), SMK(Smart Key), SJB(Smart Junction Box), PSM(Power Seat Module).
CAN (Controller Area Network) : CAN is a serial bus type communication which links control units.
LIN (Local Interconnect Network) : LIN is serial communication type which is used in electrical control system. (This is less expensive)






DTC Description

This code is outputted when BCM can't receive data from SJB by CAN Line for 10 sec.

DTC Detecting Condition





Diagnostic Circuit Diagram










Signal Waveform & Data








Fig.1) CAN Low/High Signal Waveform
Fig.2) CAN BUS VOLTAGE LEVEL (LOW SPEED CAN)