This is DTC which is related with communication error between PDM and other units.
※ Body CAN communication Control Units : BCM(Body Control Module), CLU(Cluster), PDM(Power Distribution Module), SMK(Smart Key), RPAS(Rear Parking Assist System).
*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 is less expensive.)
This code reports the malfunction of NEC MCU inside PDM. This is the case which there is the NEC MCU communication error.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
NEC MCU Communication Check |
•
Short to ground/ power or open in communication circuit of NEC MCU inside PDM
•
Replace PDM (In case It is unable to verify the cause.) |
Enable Conditions |
•
PDM power on | |
Threshold Value |
•
Communication error | |
Diagnostic Time |
•
Immediately | |
DTC Erasing Time |
•
DTC is erased immediately after trouble fixed. |
Fig.1) Signal waveform of CAN Low and HIGH
Fig.2) CAN BUS VOLTAGE LEVEL (LOW SPEED CAN)
