B1602 is presented when IC detects one of errors among 8 types under normal communication condition.
① CAN High Line short to battery
② CAN Low Line short to battery
③ CAN High Line short to ground
④ CAN Low Line short to ground
⑤ CAN High and Low line short to each other
⑥ CAN High Line short to 5V power
⑦ CAN High Line open
⑧ CAN Low Line open
※ According to operation condition, some of module which are connected to CAN line may not detect B1602. Also, B1603 can be detected together.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
CAN Communication Check |
•
BCM, SJB are not Sleep condition 1. CAN High Line short to battery 2. CAN Low Line short to battery 3. CAN High Line short to ground 4. CAN Low Line short to ground 5. CAN High and Low line short to each other 6. CAN High Line short to 5V power 7. CAN High Line open 8. CAN Low Line open caution Under Sleep condition, CAN High Line is 0V and CAN Low Line is battery voltage. |
Enable Conditions |
•
BCM, SJB power on (Under normal communication) | |
Threshold Value |
•
CAN high : 0 V
•
CAN low : 12 V (Under system sleep condition) | |
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. |
