B1604

Component Location





General Description

To make system be more efficient, Personal IC Card system(hereinafter referred to PIC system) applies CAN(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.

DTC Description

The ECM sets DTC"B1604" if there is an communication error between BCM and SMART Key ECU for more than 10s.

DTC Detecting Condition





Signal Waveform




Fig 1) CAN high communication waveform
Fig 2) CAN low communication waveform

Schematic Diagram





Monitor DTC Status

1. Connect scantool to Data Link Connector(DLC).
2. Ignition "ON" & engine "OFF"
3. Select "Diagnostic Trouble Codes(DTCs)"mode and monitor "DTC Status" parameter.




Fig 3) DTC B1604.
4. Is the DTC 'B1604' present ?






Component Inspection

Check Related Component.
1. Connect scantool to Data Link Connector(DLC).
2. Ignition "ON" & engine "OFF"
3. Select "Diagnostic Trouble Codes(DTCs)"mode and monitor "DTC Status" parameter.
4. Check if the DTC is erased while disconnecting related component one after another.
* Related component : BCM,PIC ECU.
5. Is the DTC erased ?






Verification Of Vehicle Repair

After a repair, it is essential to verifying that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode.
2. Using scantool, Clear DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Are any DTCs present ?