Body electrical system is consist of 3 Units BCM(Body Control Module),CLU(Cluster), SMK(Smart Key Control Module) constructing the Body Wiring system is connected to BODY CAN*¹.
*¹ CAN (Controller Area Network): CAN is serial bus communication type which links not only communication system but also control units each other.
DTC is set if SMK unit 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.
Check wirings if the DTC is set.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
CAN Signal Check | 1. Driver door opens, No sleeping mode in Smartkey Unit (1) Open or short circuit in CAN High line (2) Open or short circuit in CAN Low line (3) Short circuit in CAN High and Low circuit 2. NoteSignal level in sleeping mode - CAN High line : low - CAN Low line : high |
Enable Conditions |
•
Battery voltage applied to Smartkey Unit 1. Short to battery in CAN High/Low circuit 2. Short to ground in CAN High/Low circuit 3. Short circuit between CAN High and CAN Low each other 4. Short to B+(5V) in CAN High circuit 5. Open in CAN High/Low circuit | |
Threshold value |
•
CAN High/Low: Voltage is "0" means short to ground, Voltage is "B+" means short to battery | |
Diagnostic Time |
•
Above 2 seconds | |
DTC Erasing Time |
•
Immediately |
