Component Location
General Description
All 6 units which consists of the Body Electrical Control System are linked by MM CAN line.
They are IPM(Intelligent integrated Platform Module), CLU(Cluster), HU(Head Unit), Monitor, RRC(Rear Remote Control), AMP(Amplifier).
MM(MultiMedia) CAN (Controller Area Network) : MM(MultiMedia) CAN is serial bus communication type which links not only communication system but also control units each other.
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 is DTC which is related with communication error between IPM and MM CAN other units.
(? Control Units : IPM(Intelligent integrated Platform Module), CLU(Cluster), HU(Head Unit), Monitor, RRC(Rear Remote Control), AMP(Amplifier).
Case1: After short between CAN Low Line and High Line, short to ground together.
Case2: After short between CAN Low Line and High Line, short to power together.
? This code is occurred when It is not possible to transmit data by CAN Line in those way of Software and Hardware. But, It is possible to receive data by CAN Line.
This code reports BUS OFF status when data transmit error count number is over 255. The purpose is to verify the status of CAN controller and CAN communication line when error is detected.
According to operation condition, some of module which are connected to CAN line may not detect B280000.
Also, B280100 coincides with B280000 at all times.
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | MM CAN Communication Check
| IPM are not Sleep condition MM CAN High & Low Line short to ground coincident MM CAN High & Low Line short to battery coincident |
Enable Conditions | IPM power on
|
Threshold Value | MM CAN High/Low : 0V or B+
|
Diagnostic Time | Immediately
|
DTC Erasing Time | DTC is erased immediately after trouble fixed
|
Diagnostic Circuit Diagram
Signal Waveform & Data
Fig.1) CAN Low/High Signal Waveform
Fig.2) CAN BUS Voltage Level (Low Speed CAN)