General Information

Power Distribution Module
B1602 CAN Error - General Information

Component Location





General Description

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), SJB(Smart Junction Box).
* CAN (Controller Area Network) : CAN is serial bus communication type which links not only communication system but also control units each other.






DTC Description





Communication is normal but DTC set if PDM detects 7 error status as follows.
1. Short to battery in CAN High circuit
2. Short to ground in CAN High circuit
3. Short to battery in CAN Low circuit
4. Short to ground in CAN Low circuit
5. Short between CAN High and Low circuit
6. Open or Poor connection in CAN Low circuit
7. Open or Poor connection in CAN High circuit

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data








Fig.1) Signal waveform of CAN Low and HIGH
Fig.2) CAN BUS VOLTAGE LEVEL (LOW SPEED CAN)