General Information

Component Location





General Description

All 10 units which consists of the Body Electrical Control System are linked by CAN* line.
They are 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).
* 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.






DTC Description

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)
) DTC is set when short circuit between CAN high and low, which is connected to CAN IC in DDM, is short to ground or battery. And, If Data can not be transferred, however, Data receiving is possible, via CAN line because of Software and Hardware failure of CAN.

DTC Detecting Condition





Diagnostic Circuit Diagram














Signal Waveform & Data




Fig 1) CAN Low/High Signal Waveform




Fig 2) CAN BUS VOLTAGE LEVEL (LOW SPEED CAN)