This is DTC which is related with communication error between IPM and other units.
(※ Control Units : IPM(Inter Panel Module), FAM(Front Area Module), PDM(Power Distribution Module), DDM(Drive Door Module), ADM(Assist Door Module), CLU(Cluster), PSM(Power Seat Module), SCM(Steering Control Module), RAM(Rear Area Module), SMK(Smart Key)
*¹ CAN (Controller Area Network) : CAN is serial bus communication type which links not only communication system but also control units each other.
*² LIN (Local Interconnect Network) : LIN is serial communication type which is used in electrical control system.
This code is outputted when IPM can't receive data from DDM by CAN Line for 10 sec.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
CAN Comm. Check (IPM ↔ DDM) |
•
Check DDM connection
•
Check fuse related DDM
•
Check open in CAN high/low circuit of DDM
•
Check open in CAN high/low circuit of DDM |
Enable Conditions |
•
IPM power on | |
Threshold Value |
•
No message from DDM to IPM for 10 sec. | |
Diagnostic Time |
•
10 sec | |
DTC Erasing Time |
•
DTC is erased immediately after receiving data from DDM. |
Fig 1) Signal waveform of CAN Low and HIGH
Fig 2) CAN BUS VOLTAGE LEVEL (LOW SPEED CAN)
