To make system be more efficient, Personal IC Card system(hereinafter referred to PIC system) applies LIN(Controller Area Network) communication system. CAN is a kind of communication system which can make related component share system information with just two line instead of complex individual signal line. It consists of related component and CAN BUS which consists of CAN_high line and CAN_low line.
The ECM sets DTC"B1604" if there is an communication error between BCM and SMART Key ECU for more than 10s.
Item
Detecting Condition
Possible Cause
DTC Strategy
? Faulty BCM ECU.
? Faulty PIC ECU.
Enable Conditions
Threshold Value
Detecting time
FIG.1) CAN high communication waveform
FIG.2) CAN low communication waveform