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Last Modified: 11-27-2007 1.6 G
Service Category: Steering Section: Steering Column
Model Year: 2008 Model: LX570 Doc ID: RM000003B24003X
Title: STEERING COLUMN: STEERING COLUMN ASSEMBLY: ON-VEHICLE INSPECTION (2008 LX570)

ON-VEHICLE INSPECTION

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

(a) Disable the Autoaway/Return function by changing the customize parameter INTRODUCTION: REPAIR INSTRUCTION: CUSTOMIZE PARAMETERS (2008 LX570) .

CAUTION:

Record the current customize parameter setting (whether the Autoaway/Return function is enabled or disabled) in order to restore the current setting after finishing the operation.

HINT:

Performing the above operation causes the Autoaway/Return function to be disabled when the engine switch is turned off.

(b) Turn the engine switch on (IG). Operate the tilt and telescopic switch to fully extend and lower the steering column.

(c) Turn the engine switch off and disconnect the cable from the negative (-) battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

NOTICE:

  • w/ Navigation System:

    After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.

  • When disconnecting the cable, some systems need to be initialized after the cable is reconnected INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION (2008 LX570) .

2. REMOVE LOWER STEERING COLUMN COVER



(a) Remove the 3 screws.

HINT:

Turn the steering wheel to the right and left as necessary to remove the 2 screws.

(b) Detach the 2 claws to remove the lower steering column cover.

3. REMOVE UPPER STEERING COLUMN COVER

(a) Detach the 4 clips.

(b) Detach the claw to remove the upper steering column cover.

4. REMOVE DRIVER SIDE KNEE AIRBAG ASSEMBLY

(a) Remove the driver side knee airbag assembly SUPPLEMENTAL RESTRAINT SYSTEMS: KNEE AIRBAG ASSEMBLY (for Driver Side): REMOVAL (2008 LX570) .

5. INSPECT TILT MOTOR

(a) Inspect the tilt motor.

(1) Disconnect connector A from the multiplex tilt and telescopic ECU.

(2) Apply battery voltage to the tilt motor connector, and check the steering wheel tilt operation.

OK

Measurement Condition

Specified Condition

Battery positive (+) → Terminal 10 (TIM+)

Battery negative (-) → Terminal 1(TIM-)

Steering wheel tilts up

Battery negative (-) → Terminal 10 (TIM+)

Battery positive (+) → Terminal 1(TIM-)

Steering wheel tilts down

If the result is not as specified, replace the steering column.

6. INSPECT TELESCOPIC MOTOR

(a) Inspect the telescopic motor.

(1) Disconnect connector B from the multiplex tilt and telescopic ECU.

(2) Apply battery voltage to the telescopic motor connector, and check the steering column operation.

OK

Measurement Condition

Specified Condition

Battery positive (+) → Terminal 2 (TEM+)

Battery negative (-)→ Terminal 6 (TEM-)

Steering column contracts

Battery negative (-) → Terminal 2 (TEM+)

Battery positive (+)→ Terminal 6 (TEM-)

Steering column extends

If the result is not as specified, replace the steering column.

7. INSTALL DRIVER SIDE KNEE AIRBAG ASSEMBLY

(a) Install driver side knee airbag assembly SUPPLEMENTAL RESTRAINT SYSTEMS: KNEE AIRBAG ASSEMBLY (for Driver Side): INSTALLATION (2008 LX570)+ .

8. INSTALL UPPER STEERING COLUMN COVER



(a) Attach the claw to install the upper steering column cover.

(b) Attach the 4 clips to install the upper steering cover onto the instrument panel cluster finish panel.

9. INSTALL LOWER STEERING COLUMN COVER



(a) Attach the 2 claws to install the lower steering column cover.

(b) Install the 3 screws.

Torque: 2.0 N·m (20 kgf·cm, 18 in·lbf)

HINT:

Turn the steering wheel to the right and left as necessary to install the 2 screws.

10. INSPECT SRS WARNING LIGHT

(a) Inspect the SRS warning light SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: DIAGNOSIS SYSTEM (2008 LX570) .

11. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

NOTICE:

Reset the Autoaway/Return function setting to the previous condition by changing the customize parameter INTRODUCTION: REPAIR INSTRUCTION: CUSTOMIZE PARAMETERS (2008 LX570) .