General Information

Smart Key Unit
B1603 CAN Bus Off - General Information

Component Inspection




1. Smartkey Module
2. BCM

General Description

CAN Communication is a circuit, consists of CAN LOW and CAN HIGH, in order to communicate among control units.

General Description

Smartkey Module sets DTC B1603 if smart key module detects short to battery, short to ground in CAN HIGH and CAN low simultaneously. This DTC means that both CAN HIGH and CAN LOW line are error. Therefore, CAN communication is not available.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data