FRONT AXLE HUB ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during front axle hub sub-assembly on-vehicle inspection are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link
Auxiliary battery terminal is disconnected/reconnected Memorize steering angle neutral point

  • Lane departure alert system (w/ Steering Control)

  • Simple intelligent parking assist system*1

  • Toyota parking assist sensor system*1

  • Pre-collision system

Click here

Initialize back door lock Power door lock control system

Click here


Note


  • When removing or installing the front disc brake caliper assembly, pushing back the disc brake piston may cause a large clearance between the brake pads and brake disc. When the brake pedal is depressed with a large clearance between the brake pads and the brake disc, DTC C1214 related to abnormal brake fluid pressure may be stored. Make sure to clear any DTCs after performing this step.

  • While the auxiliary battery is connected, even if the power switch is off, the brake control system activates when the brake pedal is depressed or any door courtesy switch turns on. Therefore, when servicing the brake system components, do not operate the brake pedal or open/close the doors while the auxiliary battery is connected.

Tech Tips


  • Use the same procedure for the RH side and LH side.

  • The following procedure is for the LH side.

PROCEDURE


  1. PRECAUTION

    Note

    After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Click here

  2. DISABLE BRAKE CONTROL

    Click here

  3. REMOVE FRONT WHEEL

    Click here

  4. SEPARATE FRONT DISC BRAKE CALIPER ASSEMBLY

    Click here

  5. REMOVE FRONT DISC

    Click here

  6. INSPECT FRONT AXLE HUB BEARING LOOSENESS


    1. A001S0F

      Using a dial indicator, check for looseness near the center of the front axle hub sub-assembly.

      Maximum Looseness
      0.05 mm (0.00196 in.)

      Note


      • Ensure that the dial indicator is set perpendicular to the measurement surface.

      • Keep the magnet of the dial indicator away from the front axle hub sub-assembly and front speed sensor.


      • If the looseness exceeds the maximum, replace the front axle hub sub-assembly.

  7. INSPECT FRONT AXLE HUB RUNOUT


    1. A001OFU

      Using a dial indicator, check for runout on the surface of the front axle hub sub-assembly outside the front axle hub bolts.

      Maximum Runout
      0.05 mm (0.00196 in.)

      Note


      • Ensure that the dial indicator is set perpendicular to the measurement surface.

      • Make sure to set the tip of the dial indicator towards the outside of the front axle hub bolts.

      • Keep the magnet of the dial indicator away from the front axle hub sub-assembly and front speed sensor.


      • If the runout exceeds the maximum, replace the front axle hub sub-assembly.

  8. INSTALL FRONT DISC

    Click here

  9. INSTALL FRONT DISC BRAKE CALIPER ASSEMBLY

    Click here

  10. INSTALL FRONT WHEEL

    Click here

  11. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL


    1. Connect the reservoir level switch connector.

    2. Connect the cable to the negative (-) auxiliary battery terminal.

      Click here

    3. Turn the power switch on (READY).

    4. Depress the brake pedal and release it.

    5. Clear the DTCs.

      Click here