POWER STEERING SYSTEM, Diagnostic DTC:U0100, U0126, U0129, U0130, U0134, U023A, U1104

DTC Code	DTC Name
U0100	Lost Communication With ECM/PCM "A"
U0126	Lost Communication With Steering Angle Sensor Module
U0129	Lost Communication with Brake System Control Module
U0130	Lost Communication with Steering Effort Control Module
U0134	Lost Communication with DRS Module
U023A	Lost Communication with Front Camera Module
U1104	Lost Communication with Driving Support ECU

DESCRIPTION

The power steering ECU (rack and pinion power steering gear assembly) receives signals from the steering sensor, skid control ECU (brake actuator assembly)*1, skid control ECU assembly*2, VGRS ECU (front steering control ECU)*3, DRS ECU (rear steering control ECU)*3, forward recognition camera, driving support ECU assembly and ECM via CAN communication.

*1: w/ Vacuum Brake Booster
*2: w/o Vacuum Brake Booster
*3: w/ Variable Gear Ratio Steering System

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Return-to-normal Condition	Note
U0100	Lost Communication With ECM/PCM "A"	Lost communication with ECM	ECM CAN communication system Rack and pinion power steering gear assembly	EPS warning light: Does not come on	After the CAN communication returns to normal	-
U0126	Lost Communication With Steering Angle Sensor Module	Lost communication with steering sensor	Steering sensor CAN communication system Rack and pinion power steering gear assembly	EPS warning light: Comes on	After the CAN communication returns to normal	-
U0129	Lost Communication with Brake System Control Module	Lost communication with skid control ECU (brake actuator assembly)	Skid control ECU (brake actuator assembly) (w/ Vacuum Brake Booster) Skid control ECU assembly (w/o Vacuum Brake Booster) CAN communication system Rack and pinion power steering gear assembly	EPS warning light: Comes on	After the CAN communication returns to normal	-
U0130	Lost Communication with Steering Effort Control Module	Lost communication with VGRS ECU (front steering control ECU)	VGRS ECU (front steering control ECU) CAN communication system Rack and pinion power steering gear assembly	EPS warning light: Comes on	After the CAN communication returns to normal	w/ Variable Gear Ratio Steering System
U0134	Lost Communication with DRS Module	Lost communication with DRS ECU (rear steering control ECU)	DRS ECU (rear steering control ECU) CAN communication system Rack and pinion power steering gear assembly	EPS warning light: Does not come on	After the CAN communication returns to normal	w/ Variable Gear Ratio Steering System
U023A	Lost Communication with Front Camera Module	Lost communication with forward recognition camera	Forward recognition camera CAN communication system Rack and pinion power steering gear assembly	EPS warning light: Does not come on	After the CAN communication returns to normal	-
U1104	Lost Communication with Driving Support ECU	Lost communication with driving support ECU assembly	Driving support ECU assembly CAN communication system Rack and pinion power steering gear assembly	EPS warning light: Does not come on	After the CAN communication returns to normal	-

PROCEDURE

GO TO CAN COMMUNICATION SYSTEM

Go to CAN communication system.

Click here

Result

Proceed to
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END