Diagnosis System

BUS CHECK
1. Using Techstream, select "CAN Bus Check" from the "System Select".

CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION

Systems (ECUs, sensors) that use CAN communication vary depending on the vehicle's optional equipment. Check which systems (ECUs, sensors) are installed on the vehicle.

INSTALLED SYSTEMS REFERENCE

ECU/Sensor name	Check method
ENGINE	Installed on all vehicles
ABS/VSC/TRC	w/VSC
STEERING ANGLE SENSOR	w/VSC
YAW RATE/DECELERATION SENSOR	w/VSC

DTC TABLE BY ECU

HINT:

For the CAN communication system, CAN communication system DTCs stored in certain ECUs can be displayed using Techstream.
If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING " .

Skid control ECU (w/VSC)

HINT:

DTC communication uses the CAN communication system.

DTC CHART

DTC No.	Detection Item
U0073	Control Module Communication Bus OFF
U0123	Lost Communication with Yaw Rate Sensor Module
U0124	Lost Communication with Yaw Rate Sensor Module
U0126	Lost Communication with Steering Angle Sensor Module

DTCS COMBINATION TABLE

DTCS COMBINATION CHART

DTC		Trouble Mode
Output from	Output DTC	Skid Control ECU Communication Stop Mode	Steering Angle Sensor Communication Stop Mode	Yaw Rate Sensor Communication Stop Mode
Skid Control ECU	U0073	◦	-	-
	U0123	◦	-	◦
	U0124	◦	-	◦
	U0126	◦	◦	-
HINT: ◦: Set X: Not set or may be set according to the malfunctioning part when one side of the CAN bus wire opens