Steering Column (Service Information): Overhaul — Steering Column (Service Information) — Steering Column

DISASSEMBLY [06/2012 - ]

Note. When using a vise, do not overtighten it. Do not drop the power steering ECU with motor assembly, strike it with tools or subject it to impacts. If the power steering ECU with motor assembly is subjected to an impact, replace it with a new one. Do not pull the wire harness of the electric power steering column sub-assembly. Do not allow any moisture to come into contact with the power steering ECU with motor assembly. Do not loosen any bolts not mentioned in the procedure.

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Scheme 56: DISASSEMBLY [06/2012 - ]

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REMOVE STEERING LOCK ACTUATOR ASSEMBLY Using a center punch, mark the center of the 2 tapered-head bolts. Using a 3 to 4 mm (0.118 to 0.157 in.) diameter drill bit, drill a hole in each tapered-head bolt. for Manual Tilt and Manual Telescopic Steering Column Using a screw extractor, remove each tapered-head bolt, and then remove the steering lock actuator assembly from the steering column assembly. for Power Tilt and Power Telescopic Steering Column Using a screw extractor, remove each tapered-head bolt, and then remove the steering lock actuator assembly from the steering column assembly.
REMOVE POWER STEERING ECU PROTECTOR Remove the power steering ECU protector from the power steering ECU with motor assembly.
REMOVE ECU WIRE SUB-ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column) Disconnect the 2 connectors from the power steering ECU assembly. Disengage the 2 wire harness clamps to remove the ECU wire sub-assembly.
REMOVE POWER STEERING ECU WITH MOTOR ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column) Secure the steering column assembly in a vice using aluminum plates and wooden block as shown in the illustration. TEXT IN ILLUSTRATION *1 Aluminum Plate *2 Wooden Block NOTE: Do not overtighten the vice, as the steering column assembly may become deformed. Secure the power steering motor assembly so that it is directly upright. Support the steering column assembly with a wooden block or similar item to ensure that it does not fall. Disconnect the connector from the power steering ECU with motor assembly. Remove the 3 bolts and power steering ECU with motor assembly from the electric power steering column sub-assembly. Remove the electric power steering motor shaft spacer from the electric power steering column sub-assembly. Remove the electric power steering motor shaft damper from the electric power steering column sub-assembly.
REMOVE ECU WIRE SUB-ASSEMBLY (for Power Tilt and Power Telescopic Steering Column) Disconnect the 2 connectors from the power steering ECU assembly. Disengage the 2 wire harness clamps to remove the ECU wire sub-assembly.
REMOVE POWER STEERING ECU WITH MOTOR ASSEMBLY (for Power Tilt and Power Telescopic Steering Column) Disconnect the connector from the power steering ECU with motor assembly. Remove the 3 bolts and power steering ECU with motor assembly from the electric power steering column sub-assembly. Remove the electric power steering motor shaft spacer from the electric power steering column sub-assembly. Remove the electric power steering motor shaft damper from the electric power steering column sub-assembly.
REMOVE MULTIPLEX TILT AND TELESCOPIC ECU (for Power Tilt and Power Telescopic Steering Column) Disengage the claw to remove the multiplex tilt and telescopic ECU from the electric power steering column sub-assembly.

REASSEMBLY [06/2012 - ]

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Scheme 71: REASSEMBLY [06/2012 - ]

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INSTALL POWER STEERING ECU WITH MOTOR ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column) Install a new electric power steering motor shaft damper to the electric power steering column sub-assembly. Install a new electric power steering motor shaft spacer to the electric power steering column sub-assembly. Temporarily install the power steering ECU with motor assembly to the electric power steering column sub-assembly with 3 bolts. NOTE: Bolt (A) is shorter than bolt (B). Make sure to install them to the correct positions. When temporarily installing the 3 bolts to the power steering ECU with motor assembly, do not tighten them all the way down. Install the 2 service nuts to the steering main shaft. TEXT IN ILLUSTRATION *1 Service Nut Recommended service nut Thread diameter 12.0 mm (0.472 in.) Thread pitch 1.25 mm (0.0492 in.) Simultaneously rotate the service nut that was installed first counterclockwise and rotate the service nut that was installed second clockwise to lock them. NOTE: Do not apply excess torque to the service nuts by using a tool such as an impact wrench. HINT: These nuts are installed to turn the steering main shaft. They should be removed after inspecting the steering main shaft rotating torque. Secure the steering column assembly in a vice using aluminum plates as shown in the illustration. TEXT IN ILLUSTRATION *1 Aluminum Plate *2 Wooden Block NOTE: Do not overtighten the vice, as the steering column assembly may become deformed. Secure the steering column assembly so that the power steering ECU with motor assembly is directly upright. Support the steering column assembly with a wooden block or similar item to ensure that it does not fall. Turn the steering main shaft once 180 degrees to the left and then 180 degrees to the right at a speed of 60 rpm, and repeat 2 to 3 times to adjust the axis of the power steering ECU with motor assembly. Tighten the 3 bolts. Torque: 19 N*m (189 kgf*cm, 14 ft.*lbf) NOTE: Make sure not to move the power steering motor assembly after adjusting the axis. Measure the turning torque of the steering main shaft. Turning torque Torque: 1.1 to 1.9 N*m (12 to 19 kgf*cm, 10 to 17 in.*lbf) NOTE: Ensure that there is no abnormal resistance during rotation. If the torque is not as specified, readjust the axis of the power steering ECU with motor assembly. Remove the 2 service nuts from the steering main shaft. Connect the connector to the power steering ECU with motor assembly.
INSTALL ECU WIRE SUB-ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column) Engage the 2 wire harness clamps to install the ECU wire sub-assembly. Connect the 2 connectors to the power steering ECU with motor assembly.
INSTALL POWER STEERING ECU WITH MOTOR ASSEMBLY (for Power Tilt and Power Telescopic Steering Column) Install a new electric power steering motor shaft damper to the electric power steering column sub-assembly. Install a new electric power steering motor shaft spacer to the electric power steering column sub-assembly. Temporarily install the power steering ECU with motor assembly to the electric power steering column sub-assembly with 3 bolts. NOTE: Bolt (A) is shorter than bolt (B). Make sure to install them to the correct positions. When temporarily installing the 3 bolts to the power steering ECU with motor assembly, do not tighten them all the way down. Install the 2 service nuts to the steering main shaft. TEXT IN ILLUSTRATION *1 Service Nut Recommended service nut Thread diameter 12.0 mm (0.472 in.) Thread pitch 1.25 mm (0.0492 in.) Simultaneously rotate the service nut that was installed first counterclockwise and rotate the service nut that was installed second clockwise to lock them. NOTE: Do not apply excess torque to the service nuts by using a tool such as an impact wrench. HINT: These nuts are installed to turn the steering main shaft. They should be removed after inspecting the steering main shaft rotating torque. Securely set the steering column assembly on a wooden block or similar item. TEXT IN ILLUSTRATION *1 Wooden Block NOTE: Be sure to hold the steering column assembly by hand so that it will not move while servicing. Make sure that the power steering motor assembly is facing upward. Turn the steering main shaft once 180 degrees to the left and then 180 degrees to the right at a speed of 60 rpm, and repeat 2 to 3 times to adjust the axis of the power steering ECU with motor assembly. Tighten the 3 bolts. Torque: 19 N*m (189 kgf*cm, 14 ft.*lbf) NOTE: Make sure not to move the power steering motor assembly after adjusting the axis. Measure the turning torque of the steering main shaft. Turning torque Torque: 1.1 to 1.9 N*m (12 to 19 kgf*cm, 10 to 17 in.*lbf) NOTE: Ensure that there is no abnormal resistance during rotation. If the torque is not as specified, readjust the axis of the power steering ECU with motor assembly. Remove the 2 service nuts from the steering main shaft. Connect the connector to the power steering ECU with motor assembly.
INSTALL ECU WIRE SUB-ASSEMBLY (for Power Tilt and Power Telescopic Steering Column) Engage the 2 wire harness clamps to install the ECU wire sub-assembly. Connect the 2 connectors to the power steering ECU with motor assembly.
INSTALL POWER STEERING ECU PROTECTOR Install a new power steering ECU protector to the power steering ECU with motor assembly.
INSTALL MULTIPLEX TILT AND TELESCOPIC ECU (for Power Tilt and Power Telescopic Steering Column) Engage the claw to install the multiplex tilt and telescopic ECU to the electric power steering column sub-assembly.
INSTALL STEERING LOCK ACTUATOR ASSEMBLY HINT: When replacing the steering lock actuator assembly, perform initialization. Refer to «REGISTRATION [06/2012 - ]»(ref-598473-S02993753092014021400000) . for Manual Tilt and Manual Telescopic Steering Column Secure the steering column assembly in a vise. Temporarily install the steering lock actuator assembly to the steering column assembly with 2 new tapered-head bolts. Tighten the 2 tapered-head bolts until the bolt heads break off. for Power Tilt and Power Telescopic Steering Column Temporarily install the steering lock actuator assembly to the steering column assembly with 2 new tapered-head bolts. Tighten the 2 tapered-head bolts until the bolt heads break off.

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INSPECT STEERING COLUMN ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column) See step 3
INSTALL STEERING INTERMEDIATE SHAFT ASSEMBLY Install the steering intermediate shaft assembly to the steering column assembly. TEXT IN ILLUSTRATION *a Matchmark NOTE: Align the matchmarks on the steering intermediate shaft assembly and the steering column assembly. Install a new bolt. Torque: 35 N*m (360 kgf*cm, 26 ft.*lbf)
INSTALL STEERING POST ASSEMBLY Install the steering post assembly with the 4 nuts. Torque: 25 N*m (255 kgf*cm, 18 ft.*lbf) Install the ground wire with the bolt. Torque: 8.4 N*m (85 kgf*cm, 74 in.*lbf) Engage the clamp. Connect the 2 connectors. Connect the connectors and engage the wire harness clamps to the steering post assembly.
INSTALL NO. 2 AIR DUCT SUB-ASSEMBLY Engage the 2 claws and guide to install the No. 2 air duct sub-assembly.
CONNECT STEERING INTERMEDIATE SHAFT ASSEMBLY Connect the steering intermediate shaft assembly to the steering link assembly. TEXT IN ILLUSTRATION *a Matchmark NOTE: Align the matchmarks on the steering intermediate shaft assembly and the steering link assembly. Install a new bolt. Torque: 35 N*m (360 kgf*cm, 26 ft.*lbf) Tighten the clamp.
INSTALL TURN SIGNAL SWITCH ASSEMBLY WITH SPIRAL CABLE SUB-ASSEMBLY NOTE: Do not replace the spiral cable with sensor sub-assembly with the battery connected and the engine switch on (IG). Do not rotate the spiral cable with sensor sub-assembly without the steering wheel with the battery connected and the engine switch on (IG). Ensure that the steering wheel is installed and aligned straight when inspecting the steering sensor. Engage the 3 claws to install the turn signal switch assembly with spiral cable sub-assembly to the steering post assembly. Connect the connectors to the turn signal switch assembly with spiral cable sub-assembly.
INSTALL UPPER STEERING COLUMN COVER Engage the 2 claws to install the upper steering column cover. Engage the 4 clips and 2 guides to the upper steering column cover.
INSTALL LOWER STEERING COLUMN COVER (for Manual Tilt and Manual Telescopic Steering Column) Engage the 2 claws to install the lower steering column cover. Install the 2 screws. Torque: 2.0 N*m (20 kgf*cm, 18 in.*lbf) Engage the claw.
INSTALL LOWER STEERING COLUMN COVER (for Power Tilt and Power Telescopic Steering Column) Engage the 2 claws to install the lower steering column cover. Install the 3 screws. Torque: 2.0 N*m (20 kgf*cm, 18 in.*lbf)
INSTALL LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY Refer to «INSTALLATION [06/2012 - ]»(ref-598451-S29860631972014021400000)
TURN FRONT WHEELS TO FACE STRAIGHT AHEAD
INSPECT AND ADJUST SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY . Refer to «INSTALLATION [06/2012 - ] - Step 6»(ref-598451-S31798076212014021400000)
INSTALL STEERING WHEEL ASSEMBLY See step 9
INSPECT STEERING WHEEL CENTER POINT
INSTALL HORN BUTTON ASSEMBLY Refer to «INSTALLATION [06/2012 - ]»(ref-598451-S05269589622014021400000)
INSTALL FRONT WHEEL LH Torque: 103 N*m (1049 kgf*cm, 76 ft.*lbf)
CONNECT CABLE TO NEGATIVE BATTERY TERMINAL (for Power Tilt and Power Telescopic Steering Column) NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected. Refer to «INITIALIZATION [06/2012 - ]»(ref-598449-S08309221792014021400000) . Connect the cable to the negative (-) battery terminal with the front wheels facing straight ahead. Reset the auto tilt away function setting to the previous condition by changing the customize parameter. Refer to «CUSTOMIZE PARAMETERS [06/2012 - ]»(ref-598454-S08313175582014021400000) .
TORQUE SENSOR ZERO POINT CALIBRATION Refer to «CALIBRATION [06/2012 - ]»(ref-598477-S36714891992014021400000)
ADJUST PARKING ASSIST MONITOR SYSTEM (w/ Parking Assist Monitor System) Refer to «CALIBRATION [06/2012 - ]»(ref-598471-S36907716532014021400000)

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Scheme 78: ILLUSTRATION

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Scheme 79: ILLUSTRATION

Steering Column (Service Information): Overhaul Lexus ES XV60