CAN Communication is a circuit, consists of CAN LOW and CAN HIGH, in order to communicate among control units.
Control Modules are respectively communicating via CAN line in order to control Body Electrical.
DTC B1602 is set if Smartkey Module detects that CAN HIGH or CAN LOW is short to battery, short to ground, open and short between CAN High and CAN Low each other.
Item
Detecting Condition
Possible cause
DTC Strategy
CAN Signal Check
Poor Connection
Power source to Smart Key module
Short to battery in CAN communication
Short to ground in CAN communication
Short between CAN high and CAN low each other
Faulty Smartkey Module
Faulty each modules
Enable Conditions
IG ON
Threshold value
CAN communication error for 2 sec.
Failsafe
Lamp OFF