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Home >> Lexus >> 2023 >> LX 600 Base >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Service Information (1 Of 2) >> Spiral Cable >> Installation [12/2021 - ] >> Procedure

Installation [12/2021 - ]: Procedure

  1. INSPECT SPIRAL CABLE SUB-ASSEMBLY 
    1. GTY1057651Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Colored Roller (Visible Type) *B Flat Cable (Visible Type)
      *a Check Window *b Alignment Mark
      *c Colored Roller *d Top of Flat Cable U-turn
      1. Check that the spiral cable sub-assembly is in the center position.

        OK

        The connector is at the top.

        The Alignment Mark are aligned.

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

    2. GTY1057358Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Colored Roller (Visible Type) *B Flat Cable (Visible Type)
      *a Interlock *b Check Window
      *c Alignment Mark *d Colored Roller
      *e Top of Flat Cable U-turn - -
      Rotation Direction - -
      1. 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.

        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.

        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.

        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 in the center position.

        OK

        The connector is at the top.

        The Alignment Marks are aligned.

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

        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. GTY1058058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Guide *b Pin
      *c Lock Pin - -
      1. Align the pin and guide, and attach the claw to install the steering sensor to a new spiral cable sub-assembly.
        NOTE:
        • Do not remove the lock pin before the steering sensor is installed to the spiral cable sub-assembly.
        • Do not damage the claws or pins of the spiral cable sub-assembly or guides of the steering sensor.
        • The spiral cable sub-assembly can be rotated up to 30° even when the interlock is attached. Therefore, make sure that both guides are aligned properly when installing the steering sensor to the spiral cable sub-assembly.
      2. Remove the lock pin from the steering sensor.
  3. PLACE FRONT WHEELS FACING STRAIGHT AHEAD 

    Refer to PROCEDURE - Step 3

  4. INSTALL SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY 
    NOTE:
    • Do not replace the spiral cable with sensor sub-assembly with the battery connected and the ignition switch ON.
    • Do not rotate the spiral cable with sensor sub-assembly with the battery connected and the ignition switch ON.
    • When rotating the spiral cable with sensor sub-assembly to check the operation of the spiral cable with sensor sub-assembly (checking for abnormal noise, checking the DTC, Data List, etc.) make sure to perform the inspection with the steering wheel assembly installed.
    1. GTY1057794Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Turns off - -
      1. Check that the ignition switch is off.
      2. Check that the cable is disconnected from the negative (-) battery terminal.
        WARNING:
        • Wait at least 60 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
        • If the airbag deploys for any reason, it may cause a serious accident.
    2. GTY1046127Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Check that the front wheels are aligned facing straight ahead.
      2. 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.

    3. GTY1057058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Attach the claw, clip and clamp to install the spiral cable with sensor sub-assembly.
      2. Connect the 4 connectors.
      3. Connect the airbag connector.
        NOTE:

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

        HINT: 

        Refer to How to Connect or Disconnect Airbag Connector: Refer to HOW TO CONNECT OR DISCONNECT AIRBAG CONNECTOR [12/2021 - ]

  5. INSTALL UPPER STEERING COLUMN COVER 
  6. INSTALL LOWER STEERING COLUMN COVER SUB-ASSEMBLY 
  7. ADJUST SPIRAL CABLE SUB-ASSEMBLY 
    NOTE:

    Do not rotate the spiral cable sub-assembly with the battery connected and the ignition switch ON.
    1. GTY1057794Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Turns off - -
      1. Check that the ignition switch is off.
      2. Check that the cable is disconnected from the negative (-) battery terminal.
        WARNING:
        • Wait at least 60 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
        • If the airbag deploys for any reason, it may cause a serious accident.
    2. GTY1046257Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Colored Roller (Visible Type) *B Flat Cable (Visible Type)
      *a Check Window *b Colored Roller
      *c Top of Flat Cable U-turn - -
      1. Check that the spiral cable sub-assembly is in the center position.

        OK

        The connector is at the top.

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

    3. GTY1046376Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A Colored Roller (Visible Type) *B Flat Cable (Visible Type)
      *a Interlock *b Check Window
      *c Colored Roller *d Top of Flat Cable U-turn
      Rotation Direction - -
      1. 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.

        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.

        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.

        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 in the center position.

        OK

        The connector is at the top.

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

        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.

  8. INSTALL STEERING WHEEL ASSEMBLY 

    Refer to INSTALLATION [12/2021 - ]

  9. UPDATE ECU SECURITY KEY 

    Refer to UPDATE ECU SECURITY KEY [12/2021 - ]

  10. PERFORM DIAGNOSTIC SYSTEM CHECK 
  11. CHECK SRS WARNING LIGHT 

    Refer to OPERATION CHECK [12/2021 - ]

  12. CUSTOMIZE POWER TILT AND POWER TELESCOPIC STEERING COLUMN SYSTEM 
    Refer to PROCEDURE - Step 16
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