STEERING COLUMN ASSEMBLY REASSEMBLY

Note


  • When using a vise, do not overtighten it.

  • Do not drop the power steering motor assembly, strike it with tools or subject it to impacts.

  • If the power steering 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 motor assembly.

  • Do not loosen any bolts not mentioned in the procedure.


  1. INSTALL POWER STEERING ECU ASSEMBLY


    1. Install the power steering ECU assembly to the power steering motor assembly with 2 new bolts.

      Torque:
      20 N*m  { 204 kgf*cm, 15 ft.*lbf }

    2. Install 3 new bolts.

      Torque:
      3.2 N*m  { 33 kgf*cm, 28 in.*lbf }

    3. Engage the 4 claws to install a new protector.

  2. INSTALL POWER STEERING ECU WITH MOTOR ASSEMBLY


    1. A01HTVFE02
      Text in Illustration
      *1 Service Nut

      Install the 2 service nuts to the steering main shaft.

      Recommended service nut
      Thread diameter
      12.0 mm (0.472 in.)
      Thread pitch
      1.25 mm (0.0492 in.)

    2. Simultaneously to 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.

      Tech Tips

      These nuts are installed to turn the steering main shaft. They should be removed after inspecting the steering main shaft rotating torque.

    3. Install a new O-ring to the power steering ECU with motor assembly.

    4. A01HU8T

      Apply grease to the splines of the power steering ECU with motor assembly.

      Note

      First wipe off the existing grease from the splines, and then apply the dedicated grease supplied with a new power steering motor assembly or electric power steering column sub-assembly.

    5. Insert the power steering ECU with motor assembly into the splines of the electric power steering column sub-assembly.

      Note

      Do not damage the gears.

    6. A01HUYKE01
      Text in Illustration
      *1 Aluminum Plate
      *2 Wooden Block

      Secure the steering column assembly in a vice using aluminum plates and wooden block as shown in the illustration.

      Note


      • Do not overtighten the vice, as the steering column assembly may become deformed.

      • Secure the steering column assembly so that power steering motor assembly is directly upright.

      • Support the steering column assembly with a wooden block or similar item to ensure that it does not fall.

    7. A01HSN2

      Temporarily install the power steering ECU with motor assembly to the electric power steering column sub-assembly with 2 new bolts while rotating the steering main shaft at approximately 4 rpm.

      Note

      When temporarily installing the 2 bolts to the power steering motor assembly, do not tighten them all the way down.

    8. Rotate the steering main shaft 120 to 240 degrees at approximately 4 rpm.

    9. Rotate the steering main shaft 180 degrees clockwise and counterclockwise at approximately 4 rpm and repeat this operation 2 or 3 times to align the power steering ECU with motor assembly.

    10. Tighten the 2 bolts.

      Torque:
      19 N*m  { 194 kgf*cm, 14 ft.*lbf }

      Note

      Make sure not to move the power steering motor assembly after adjusting the axis.

    11. A01HVYD

      Measure the turning torque of the steering main shaft.

      Torque:
      Turning torque
      1.2 to 1.7 N*m  { 12 to 17 kgf*cm, 10 to 15 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.

    12. Remove the 2 service nuts from the steering main shaft.

    13. Connect the 2 connectors to the power steering ECU assembly.

  3. INSTALL ECU WIRE SUB-ASSEMBLY


    1. Engage the 2 wire harness clamps to install a new ECU wire sub-assembly.

    2. Connect the 2 connectors to the power steering ECU with motor assembly.

  4. INSTALL POWER STEERING ECU PROTECTOR


    1. Engage the 2 claws to install a new power steering ECU protector to the power steering ECU with motor assembly.

  5. INSTALL STEERING LOCK ACTUATOR ASSEMBLY

    Tech Tips

    When replacing the steering lock actuator assembly, perform initialization Click here.


    1. Secure the steering column assembly in a vise.

    2. A01HUWB

      Temporarily install the steering lock actuator assembly to the steering column assembly with 2 new tapered-head bolts.

    3. Tighten the 2 tapered-head bolts until the bolt heads break off.