Each control module such as BCM(Body Control Module), Cluster(CLU:Cluster), SMK(Smartkey Module), SJB(Smart Junction Box), PSM(Power Seat Module) is connected each other with Body CAN*¹. Each Control Unit(Module) consists of Low and High Line.
*¹ CAN (Controller Area Network) : CAN is serial bus communication type which links not only communication system but also control units each other.
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 | 1. Can high : Short to battery 2. Can low : Short to ground 3. Short between CAN high and low wire. 4. Poor contact or open in CAN high or Low 5. Faulty Smartkey Module(PIC IMMO Unit) |
Enable Conditions |
•
IG KEY ON or Engine ON. | |
Threshold value |
•
CAN high/low : Votlage is "0" means short to ground, Voltage is "B+" means short to battery | |
Diagnostic Time |
•
For more than 2 seconds |
