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Component inspection

General Description

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

Control Modules are respectively communicating via CAN line in order to control Body Electrical.

DTC Description

DTC B1602 is set if Smartkey Module detects that CAN HIGH or CAN LOW is short to battery, short to ground, open and short between CAN High and CAN Low each other.

DTC Detecting Condition

Item	Detecting Condition	Possible cause
DTC Strategy	• CAN Signal Check	• Poor Connection • Power source to Smart Key module • Short to battery in CAN communication • Short to ground in CAN communication • Short between CAN high and CAN low each other • Faulty Smartkey Module • Faulty each modules
Enable Conditions	• IG ON
Threshold value	• CAN communication error for 2 sec.
Failsafe	• Lamp OFF

Diagnostic Circuit Diagram

Signal Waveform & Data