Canada - Starting System - Ignition Switch Hard To Turn
BulletinTSB2043
Issue Date
October 26, 2004
Title
IGNITION SWITCH DIFFICULT TO TURN DUE TO STEERING LOCK
Component
STEERING
Models
'04 LS 430
The steering column of the LS 430 incorporates a steering wheel lock to prevent steering operation should someone attempt to move the car without the ignition key. Under normal parking conditions a customer may randomly experience a locking of the steering wheel.
Unlike a conventional ignition interlock system in which the locking pawl is operated by a mechanical linkage, the ignition interlock pawl on a SMART key system is operated by an electrically driven motor. This difference requires a two-step operation to release a locked steering column. When the wheel is locked it is necessary to push and hold the ignition switch first, then rock (slight turning motion in both directions) the steering wheel to allow the steering lock pawl to disengage.
See the recommended procedure shown or see the video clip next to bulletin title on ETAS.
APPLICABLE VEHICLES:
- 2004 model year LS 430 vehicles produced BEFORE the Production Change Effective VINs shown below.
PRODUCTION CHANGE INFORMATION:
WARRANTY INFORMATION:
REQUIRED SSTS:
STEERING LOCK POSITION MODIFICATION PROCEDURE:
1. Remove Instrument Panel Under Cover Sub-assembly No. 1.
A. Remove the 2 screws.
B. Disengage the 2 clips and remove the instrument panel under cover Sub-assembly No. 1.
C. Disconnect the connectors.
2. Lock Steering Wheel.
3. Put Mark on Steering Main Shaft Assembly.
A. Put the mark on the steering main shaft assembly as shown in the illustration.
4. Loosen Steering Intermediate Shaft Assembly No. 2 Set Bolt.
HINT:
If it is difficult to access the bolt, insert the smart key into the ignition switch and turn the steering wheel to change the position of the bolt head.
5. Release Steering Lock.
A. Insert the smart key, then release the steering lock.
6. Place Front Wheels Facing Straight Ahead.
7. Disconnect Negative Battery Terminal.
NOTE:
Work must be started after 90 seconds from the time the negative (-) terminal cable is disconnected from the battery.
(The supplemental restraint system is equipped with a back-up power source so that if work is started within 90 seconds of disconnecting the negative (-) terminal cable from the battery, the SRS may deploy.)
8. Remove Steering Horn Button Assembly.
A. Remove the switch and volume case.
B. Remove steering wheel cover lower No. 2.
C. Using a torx socket wrench (T30), loosen the 2 torx screws until the groove along the screw circumference is caught on the screw case.
D. Pull out the horn button assembly from the steering wheel and disconnect the airbag connectors.
E. Disconnect the terminal.
CAUTION:
- When placing the horn button assembly down, keep upper surface of the horn button assembly facing upward.
- Never disassemble the horn button assembly.
NOTE:
When removing the horn button assembly, take care not to pull the airbag wire harness.
9. Remove Steering Wheel Assembly.
A. Remove the steering wheel assembly set nut.
B. Using the SST, remove the steering wheel assembly.
- SST P/N 09950-50013
(09951-05010, 09952-05010,
09953-05020, 09954-05021)
10. Lift Up Vehicle.
11. Remove Engine Under Cover No. 2.
A. Remove the 4 screws, 2 nuts and the engine under cover No. 2.
12. Loosen Steering Slide w/Shaft Yoke Sub-assembly Set Bolt.
HINT:
Be careful not to remove the set bolt.
13. Lower Vehicle.
14. Disconnect Steering Intermediate Shaft Assembly No. 2.
A. Remove the bolt and disconnect the steering intermediate shaft sub-assembly No. 2 from steering main shaft assembly.
15. Turn Steering Main Shaft Assembly.
A. Turn the steering main shaft assembly 90 degree so that the mark, put on at step 3, is positioned on the lower side of the vehicle.
B. Remove the smart key from ignition switch.
16. Connect Steering Intermediate Shaft Assembly No. 2.
A. Temporarily connect the steering intermediate shaft assembly No. 2 to the steering main shaft assembly with the bolt.
17. Check Steering Lock Operation.
A. Install the steering wheel.
B. Temporarily install the steering wheel set nut.
C. Connect the negative battery terminal.
D. Remove the smart key.
E. Check that the steering wheel locks when it is turned 90 degree from the center position.
F. Disconnect the negative battery terminal.
18. Torque Steering Intermediate Shaft Assembly No. 2 Set Bolt.
Torque: 35.3 N-m (360 kgf-cm, 26 ft-lbf)
HINT:
it is difficult to access the bolt, insert the smart key into the ignition switch and turn the steering wheel to change the position of the bolt head.
19. Lift Up Vehicle.
20. Torque Steering Slide w/Shaft Yoke Sub-assembly Set Bolt.
Torque: 35.3 N-m (360 kgf-cm, 26 ft-lbf)
21. Install Engine Under Cover No. 2.
A. Install the engine under cover No. 2 with 4 screws and 2 nuts.
22. Lower Vehicle.
23. Place Front Wheels Facing Straight Ahead.
24. Torque Steering Wheel Assembly Set Nut.
Torque: 50 N-m (510 kgf-cm, 37 ft-lbf)
25. Install Steering Horn Button Assembly.
NOTE:
- Never use airbag parts removed from another vehicle. When replacing parts, replace with new ones.
- Make sure the wheel pad is installed with the specified torque.
- If the wheel pad is dropped or there are cracks, dents or other defects on the case or connector, replace the wheel pad with a new one.
- When installing the wheel pad, take care so that the wiring does not interfere with other parts and they are not pinched between other parts.
A. Connect the terminal.
B. Install the horn button assembly to the steering wheel, then connect the airbag connectors.
C. Install the steering wheel pad after confirming that the circumference groove of the torx screws is caught on the screw case.
D. Using a torx socket wrench (T30), torque the 2 torx screws.
Torque: 8.8 N-m (90 kgf-cm, 78 in-lbf)
E. Install the switch and volume case.
26. Install Instrument Panel Under Cover Sub-assembly No. 1.
A. Connect the connectors.
B. Install the instrument panel under cover sub-assembly with 2 screws.
27. Connect Negative Battery Terminal.
28. Inspect Horn Button.
Refer to etas, 2004 model year LS 430 Repair Manual: Horn; Horn System.
29. Inspect SRS Warning Light.
Refer to etas, 2004 model year LS 430 Repair Manual: Supplemental Restraint System.
30. Perform Initialization.
A. Perform Front Power Seat Control System Initialization. (Refer to ETAS, 2004 model year LS 430 Repair Manual: Introduction; Repair Instruction.)
B. Perform A/C Step Motor Initialization. (Refer to ETAS, 2004 model year LS 430 Repair Manual: Diagnostics; Air Conditioning System.)
HINT:
After completing the procedures, inspect and adjust steering wheel off-center.
STEERING OFF-CENTER REPAIR PROCEDURE:
1. Inspect Steering Wheel Off Center.
A. Apply masking tape on the top center of the steering wheel and steering column upper cover.
B. Drive the vehicle in a straight line for 100 meters at a constant speed of 35 mph (56 km/h), and hold the steering wheel to maintain the course.
C. Draw a line on the masking tape as shown in the illustration.
D. Turn the steering wheel to the center position.
HINT:
Refer to the upper surface of the steering wheel, steering spoke and SRS airbag line for the center position.
E. Draw a new line on the masking tape on the steering wheel as shown in the illustration.
F. Measure the distance between the 2 lines on the masking tape on the steering wheel.
G. Convert the measured distance to steering angle (adjustment value).
Measured distance 1mm (0.04 in.) = Steering angle (adjustment value) of approximately 1 degree.
HINT:
Make a note of the steering angle.
2. Adjust Steering Angle.
A. Draw a line on the LH and RH tie rod ends and rack ends respectively where it can be easily seen.
B. Using a ruler, measure the distance from the LH and RH tie rod ends to the rack end screws.
HINT:
- Measure both sides.
- Make a note of the measured values.
C. Remove the LH and RH boot clips from the rack boots.
D. Loosen the LH and RH lock nuts.
E. Turn the LH and RH rack ends by the same amount (but in different directions) according to the steering angle.
360 degree turn of rack end (1.5 mm [0.059 in.] horizontal movement ) = 12 degrees of steering angle.
F. Tighten the LH and RH lock nuts by the specified torque.
Torque: 74 N-m (750 kgf-cm, 54 ft-lbf)
NOTE:
Make sure that the difference in length between the RH and LH tie rod ends and rack end screws are within 1.5 mm (0.059 in.).
G. Install the LH and RH boot clips.
NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.