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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 [09/2017 - 05/2019] >> Procedure

Installation [09/2017 - 05/2019]: Procedure

  1. INSPECT SPIRAL CABLE SUB-ASSEMBLY 
    1. Check that the spiral cable sub-assembly is center position.

      OK

      The connector is at the top.

      The matchmarks are aligned.

      The top of the flat cable U-turn can be checked from the check window.

      GTY809509Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A w/o Steering Heater *B w/ Steering Heater
      *a Check Window *b Matchmark
      *c Top of Flat Cable U-turn - -
    2. If the spiral cable sub-assembly is not centered, center it.
      NOTE:

      Failure to observe the following precautions may result in damage to the spiral cable sub-assembly.

      • When rotating the spiral cable sub-assembly, make sure to push on the interlock to release the interlock.
      • Do not turn the spiral cable sub-assembly using the airbag wire harness.
      • Do not forcibly rotate the part.
      1. While pushing on the interlock indicated in the illustration. Make sure to rotate the spiral cable sub-assembly counterclockwise slowly by hand until it stops.
        GTY791204Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Interlock
        Counterclockwise
        NOTE:

        Make sure to rotate the spiral cable sub-assembly counterclockwise. If rotated clockwise, it may be damaged or centering may no longer be possible.

        HINT: 

        The interlock operates at the top and bottom of the connector.

      2. If the spiral cable sub-assembly stops rotating and the connector has moved past the bottom, return the connector to the bottom as shown in the illustration.
        GTY792007Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. While pushing on the interlock, rotate the spiral cable sub-assembly clockwise approximately 2.5 times to move the connector from the bottom to the top.
        GTY812685Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Interlock
        Clockwise
        NOTE:

        If the connector is rotated clockwise from the bottom 5 times or more, the spiral cable sub-assembly may be damaged.

        HINT: 

        The interlock operates at the top and bottom of the connector.

      4. Check that the spiral cable sub-assembly is center position.

        OK

        The connector is at the top.

        The matchmarks are aligned.

        The top of the flat cable U-turn can be checked from the check window.

        GTY809509Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *A w/o Steering Heater *B w/ Steering Heater
        *a Check Window *b Matchmark
        *c Top of Flat Cable U-turn - -
        NOTE:

        If the spiral 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.

  2. 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

  3. 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. Set the turn signal switch to the neutral position.
      NOTE:

      If it is not in the neutral position, the turn signal switch cancel ratchet may snap.

    5. Attach the 3 claws to install the spiral with sensor cable sub-assembly.
    6. Connect each connector.
      NOTE:

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

    7. 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.

  4. 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

  5. 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

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

    Do not adjust 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 spiral with sensor cable sub-assembly is center position.

      OK

      The connector is at the top.

      The matchmarks are aligned.

      The top of the flat cable U-turn can be checked from the check window.

      GTY827364Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A w/o Steering Heater *B w/ Steering Heater
      *a Check Window *b Matchmark
      *c Top of Flat Cable U-turn - -
    4. If the spiral with sensor cable sub-assembly is not centered, center it.
      NOTE:

      Failure to observe the following precautions may result in damage to the spiral with sensor cable sub-assembly.

      • When rotating the spiral with sensor cable sub-assembly, make sure to push on the interlock to release the interlock.
      • Do not turn the spiral with sensor cable sub-assembly using the airbag wire harness.
      • Do not forcibly rotate the part.
      1. While pushing on the interlock indicated in the illustration. Make sure to rotate the spiral with sensor cable sub-assembly counterclockwise slowly by hand until it stops.
        GTY804713Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Interlock
        Counterclockwise
        NOTE:

        If the connector is rotated clockwise from the bottom 5 times or more, the spiral with sensor cable sub-assembly may be damaged.

        HINT: 

        The interlock operates at the top and bottom of the connector.

      2. If the spiral with sensor cable sub-assembly stops rotating and the connector has moved past the bottom, return the connector to the bottom as shown in the illustration.
        GTY793637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. While pushing on the interlock, rotate the spiral with sensor cable sub-assembly clockwise approximately 2.5 times to move the connector from the bottom to the top.
        GTY836112Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Interlock
        Clockwise
        NOTE:

        If the connector is rotated clockwise from the bottom 5 times or more, the spiral with sensor cable sub-assembly may be damaged.

        HINT: 

        The interlock operates at the top and bottom of the connector.

      4. Check that the spiral with sensor cable sub-assembly is center position.

        OK

        The connector is at the top.

        The matchmarks are aligned.

        The top of the flat cable U-turn can be checked from the check window.

        GTY827364Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *A w/o Steering Heater *B w/ Steering Heater
        *a Check Window *b Matchmark
        *c Top of Flat Cable U-turn - -
        NOTE:

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

  8. INSTALL STEERING WHEEL ASSEMBLY 

    Refer to INSTALLATION [09/2017 - ]

  9. 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 [09/2017 - 05/2019]

  10. PERFORM DIAGNOSTIC SYSTEM CHECK 

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

  11. CHECK SRS WARNING LIGHT 

    Refer to DIAGNOSIS SYSTEM [10/2014 - ]

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