This is DTC which is related with communication error between SJB and other units.
※ Body CAN communication Control Units : BCM(Body Control Module), CLU(Cluster Module), SJB(Smart Junction Box), SMK(Smart Key Module), PSM(Power Seat Module), AVN(Audio Video Navigation)
Case1: After short between CAN Low Line and High Line, short to ground together.
Case2: After short between CAN Low Line and High Line, short to power together.
※ This code is occurred when It is not possible to transmit data by CAN Line in those way of Software and Hardware. But, It is possible to receive data by CAN Line.This code reports BUS OFF status when data transmit error count number is over 255. The purpose is to verify the status of CAN controller and CAN communication line when error is detected.
According to operation condition, some of module which are connected to CAN line may not detect B1603.
Also, B1602 coincides with B1603 at all times.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
CAN Communication Check | 1. BCM are not Sleep condition (1) CAN High and Low Line short to ground coincident (2) CAN High and Low Line short to battery coincident |
Enable Conditions |
•
BCM power on | |
Threshold Value |
•
In case, number of error in CAN Controller's data transmission exceed over 255 times, and its internal counting error occurs twice. | |
Diagnostic Time |
•
It immediately sets DTC after fault detects. | |
DTC Erasing Time |
•
DTC can be erased immediately with GDS after fault has been fixed. DTC is erased after performing IG1 ON/OFF 30times with no additional DTC. |
