37-STEERING SHAFT REMOVAL AND INSTALLATION

REMOVAL AND INSTALLATION

caution

When the steering column shaft assembly (integrated with EPS-ECU) is replaced, coding must be performed. When diagnostic trouble code No.U1195 "Coding not completed" is set in the steering column shaft assembly (integrated with EPS-ECU), diagnose each DTC.
Before removing the steering wheel and driver’s air bag module assembly refer to GROUP 52B - Service Precautions , Driver’s Air Bag Module and Clock Spring .
After the installation, perform a calibration for the EPS-ECU to learn the torque sensor neutral point (Refer to ).
After the installation, perform a calibration for the ASC-ECU to learn the steering wheel sensor neutral point (Refer to GROUP 35C - On-vehicle Service, Steering Wheel Sensor Calibration ).
Do not reuse the part that has been dropped because its internal components may be defective even if it has no apparent damage.
Always keep the steering column shaft assembly away from the matter that generates magnetic force.
For the steering column shaft assembly, parts cannot be disassembled.
Be careful when removing and installing the steering column shaft assembly, because it is heavy.

Pre-removal and post-installation operation

Steering Wheel Straight-ahead Position Check
Steering Wheel Assembly Removal and Installation (Refer to ).
Steering Column Cover Lower and Steering Column Cover Upper Removal and Installation (Refer to GROUP 52A - Instrument Panel Assembly )
Knee Air Bag Module Removal and Installation (Refer to GROUP 52B - Knee Air Bag Module ).

			Removal steps
		1.	Paddle shift assembly <Vehicles with paddle shift>
		2.	Column switch assembly (Refer to GROUP 54A - Column Switch )
		3.	Harness bracket
		4.	Steering shaft cover
	>>B<<	5.	Steering column bolt (Steering column shaft assembly and steering gear and linkage connection)
<<A>>	>>A<<	6.	Steering column shaft assembly

REMOVAL SERVICE POINTS

<<A>> STEERING COLUMN SHAFT ASSEMBLY REMOVAL

1. Ensure that the tilt lever is in the lock position.

2. Remove the steering column shaft assembly mounting bolt.

caution

Hold the motor shown because improper installation may result when the jacket assembly comes off or turns.
Do not apply any load to the harness because an open circuit may occur.
Do not release the tilt lever because the jacket assembly may come off.
Do not subject separation capsule to any shocks because the collision energy absorbing mechanism may not work normally or the steering column shaft may fall down after installing.

3. Remove the steering column shaft assembly.

INSTALLATION SERVICE POINTS

>>A<< STEERING COLUMN SHAFT ASSEMBLY INSTALLATION

1. Ensure that the tilt lever is in the lock position.

caution

Hold the motor shown because improper installation may result when the jacket assembly comes off or turns.
Do not apply any load to the harness because an open circuit may occur.
Do not release the tilt lever until the steering column shaft assembly is installed to the vehicle, because the mounting position to the vehicle may be misaligned or the installation to the vehicle may become difficult.
Do not subject the separation capsule to any shocks because the collision energy absorbing mechanism may not work normally or the steering column shaft may fall down after installing.
Connect the motor harness to EPS-ECU without excessive bend or twisting.

2. Hand-tighten the mounting bolts in the order of a, b, c, and tighten them in the order of c, b, a to the specified torque.

Tightening torque:

>>B<< STEERING COLUMN BOLT (STEERING COLUMN SHAFT ASSEMBLY AND STEERING GEAR & LINKAGE CONNECTION) INSTALLATION

Insert the new steering column bolt into the non-threaded bolt hole, and tighten it to the specified torque.

Specified torque: 37 ± 5 N·m (27 ± 3 ft-lb)