General Information

Instrument Panel Module
B168900 CAN timeout between SMK and PDM - General Information

Component Location





General Description

All 9 units which consists of the Body Electrical Control System are linked by CAN* line.
They are IPM(Intelligent integrated Platform Module), DDM(Drive Door Module), ADM(Assist Door Module), CLU(Cluster), PSM(Power Seat Module), SCM(Steering Control Module), MFSW(Multi-Function Switch), SWRC(Steering Wheel Remote Controller), SMK(Smart Key Module).
* 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 is less expensive.)




IPM: Intelligent integrated Platform Module SMK: Smart Key DDM: Driver Door Module ADM: Assistant Door Module PSM: Power Seat Module MFSW: Multi-Function Switch SWRC: Steering Wheel Remote Controller IMS SW:Integrated Memory System Switch SCM: Steering Column Module PCU: Power-train Control Unit ECU: Engine Control Unit EPB: Electronic Parking Brake ABS: Anti-lock Brake System ESC: Electronic Stability Control SCC: Smart Cruise Control CLUM: Cluster Module DATC: Dual Automatic Temp. Control SCC: Smart Cruise Control MDPS: Motor Driven Power Steering SAS: Steering Angle Sensor TPMS: Tire Pressure Monitoring System SRSCM: Supplemental Restraints System Control Module HU: Head Unit RRC: Rear Remote Control AMP: Amplifier

DTC Description

This code is outputted when IPM can't receive data from PDM(SMARTKEY UNIT) by CAN Line for 10 sec.

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)