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Home >> Lexus >> 2019 >> NX 300 Base, AWD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Service Information >> Spiral Cable >> Installation [10/2014 - 09/2017] >> Procedure

Installation [10/2014 - 09/2017]: Procedure

  1. INSTALL STEERING SENSOR 

    HINT: 

    Perform this procedure only when replacement of the spiral cable sub-assembly is necessary.

    1. Install the steering sensor to a new spiral cable sub-assembly.

      Refer to PROCEDURE - Step 1

  2. INSTALL SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY 
    NOTE:
    • Do not replace the spiral with sensor cable sub-assembly with the battery connected and the engine switch on (IG).
    • Do not rotate the spiral with sensor cable sub-assembly with the battery connected and the engine switch on (IG).
    1. Check that the engine switch is off.
    2. Check that the cable is disconnected from the negative (-) battery terminal.
      WARNING:

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

    3. Check that the front wheels are facing straight ahead.
    4. Attach the 3 claws to install the spiral with sensor cable sub-assembly.
    5. Connect each connector.
      NOTE:

      When connecting any airbag connector, take care not to damage the airbag wire harness.

    6. Connect the airbag connector and check that the slider is in the lock position.
      GTY505636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Slider
      *a Lock Position

      HINT: 

      If the slider is not in the lock position, the airbag connector is not completely connected. Disconnect the airbag connector, check the airbag connector and spiral with sensor cable sub-assembly terminals and connector housings for deformation or foreign matter, and then reconnect the airbag connector.

  3. INSTALL UPPER STEERING COLUMN COVER 

    for Manual Tilt and Manual Telescopic Steering Column:

    Refer to PROCEDURE - Step 10

    for Power Tilt and Power Telescopic Steering Column:

    Refer to PROCEDURE - Step 10

  4. INSTALL LOWER STEERING COLUMN COVER 

    for Manual Tilt and Manual Telescopic Steering Column:

    Refer to PROCEDURE - Step 11

    for Power Tilt and Power Telescopic Steering Column:

    Refer to PROCEDURE - Step 11

  5. PLACE FRONT WHEELS FACING STRAIGHT AHEAD 
  6. ADJUST SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY 
    NOTE:

    Do not adjust the spiral with sensor cable sub-assembly with the auxiliary battery connected and the engine switch on (IG).

    1. Check that the engine switch is off.
    2. Check that the cable is disconnected from the negative (-) battery terminal.
      WARNING:

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

    3. Check the check window shown in the illustration.

      HINT: 

      When the spiral with sensor cable sub-assembly is centered, the connector is at the top and the conditions below can be checked.

      GTY949091Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A w/o Steering Heater
      *B w/ Steering Heater
      *1 Check Window
      *2 Colored Roller
      *3 U-turn Point
      • w/o Steering Heater:

        With the steering wheel straight ahead, the colored roller can be checked from the check window.

      • w/ Steering Heater:

        With the steering wheel straight ahead, the U-turn point of the cable can be checked from the check window.

    4. If the spiral with sensor cable sub-assembly is not centered, center it.
      1. While pushing on the interlock indicated in the illustration, rotate the spiral with sensor cable sub-assembly counterclockwise slowly by hand until it stops.
        NOTE:
        • When rotating the spiral with sensor cable sub-assembly, make sure to push on the interlock indicated in the illustration to release the interlock mechanism.
        • Do not turn the spiral with sensor cable sub-assembly using the airbag wire harness.
        GTY949073Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *A w/o Steering Heater
        *B w/ Steering Heater
        *1 Interlock
      2. Rotate the spiral with sensor cable sub-assembly 2.5 times clockwise from the lock position and check the check window.
        GTY949102Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *A w/o Steering Heater
        *B w/ Steering Heater
        *1 Check Window
        *2 Colored Roller
        *3 U-turn Point

        HINT: 

        • The spiral with sensor cable sub-assembly will rotate approximately 2.5 turns to both the left and right from the center.
        • When the spiral with sensor cable sub-assembly is centered, the connector is at the top and the conditions below can be checked.
        • w/o Steering Heater:

          With the steering wheel straight ahead, the colored roller can be checked from the check window.

        • w/ Steering Heater:

          With the steering wheel straight ahead, the U-turn point of the cable can be checked from the check window.

        If the spiral with sensor cable sub-assembly cannot be centered, it is possible that the spiral cable sub-assembly is broken. Replace the spiral cable sub-assembly with a new one.

  7. INSTALL STEERING WHEEL ASSEMBLY 

    Refer to INSTALLATION [10/2014 - 09/2017]

  8. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
    NOTE:

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

    Refer to INITIALIZATION [10/2014 - 09/2017]

  9. PERFORM DIAGNOSTIC SYSTEM CHECK 

    Refer to DTC CHECK / CLEAR [10/2014 - 05/2019]

  10. CHECK SRS WARNING LIGHT 

    Refer to DIAGNOSIS SYSTEM [10/2014 - ]