POWER STEERING ECU REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the power steering ECU assembly removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced
Replacement Part or Procedure	Necessary Procedures	Effects / Inoperative when not performed	Link
Replacement of the power steering ECU assembly	Perform Torque Sensor Zero Point Calibration Assist Map Writing	DTCs are stored Steering effort different between turning steering wheel left and right EPS warning light illuminates	Click here
Replacement of the electric power steering column sub-assembly	Perform Torque Sensor Zero Point Calibration		Click here
Replacement of the steering lock actuator or upper bracket assembly	Perform code registration (Immobiliser system)	Wireless door lock control system Entry and start system Engine start function Steering lock system Telematics system	See Service Bulletin for the registration method.
Removal/installation of the spiral cable with sensor sub-assembly	Steering angle neutral point (Initialize parking assist monitor system) Steering angle setting	Parking assist monitor system (w/ Parallel Parking Assist Function)	Click here for Initialization Click here for Calibration
		Parking assist monitor system (w/o Parallel Parking Assist Function)	Click here for Initialization Click here for Calibration
	Steering angle neutral point (Initialize panoramic view monitor system)	Panoramic view monitor system	Click here for Initialization Click here for Calibration
Disconnect cable from negative battery terminal	Memorize steering angle neutral point	LKA /LDA system	Click here
		Pre-crash safety system
		Lighting system (EXT) Cornering lights
		Adaptive high beam system
	Drive the vehicle until stop and start control is permitted (approximately 15 to 60 minutes)	Stop and start system	Click here
	Memorize steering angle neutral point	Parking Assist Monitor System (w/ Parallel Parking Assist Function)	Click here
		Parking Assist Monitor System (w/o Parallel Parking Assist Function)	Click here
		Panoramic view monitor system	Click here
	Initialize back door lock	Power door lock control system	Click here
	Reset back door close position	Power back door system	Click here

PROCEDURE

REMOVE STEERING COLUMN ASSEMBLY

Click here
REMOVE STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY

Click here
REMOVE POWER STEERING ECU ASSEMBLY
Note
- Do not drop the power steering ECU assembly, strike it with tools or subject it to impacts.
- If the power steering ECU assembly is subjected to an impact, replace it with a new one.
- Do not pull the wire harness of the power steering ECU assembly.
- Do not allow any moisture to come into contact with the power steering ECU assembly.
- Do not loosen any bolts not mentioned in the procedure.
- Do not allow any foreign matter to contaminate the power steering ECU assembly.
1. Disconnect the connector.
2. Remove the 2 bolts and power steering ECU assembly from the electric power steering column sub-assembly.
3. Remove the electric power steering motor shaft damper from the electric power steering column sub-assembly.