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Home >> Toyota >> 2017 >> Prius Three >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Service Information (1 Of 2) >> Spiral Cable >> Installation [11/2015 - 12/2018] >> Procedure

Installation [11/2015 - 12/2018]: Procedure

  1. INSPECT SPIRAL CABLE SUB-ASSEMBLY 
    NOTE:

    If the steering sensor is installed to a misaligned spiral cable sub-assembly, DTCs for an abnormal steering sensor value such as DTC B1801, C1231 and C1433 will be stored and it will be impossible to correct the problem. If this happens, replace the spiral cable with sensor sub-assembly with a new one.

    1. Check if the spiral cable sub-assembly is centered.
      GTY542976Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Flat Cable

      HINT: 

      When the spiral cable sub-assembly is centered, the part (A) is positioned at the top and the flat cable shown in the illustration is visible.

    2. If the spiral cable sub-assembly is not centered, center it.
      1. While pushing on the interlock shown in the illustration, rotate the spiral cable sub-assembly counterclockwise slowly by hand until it stops.
        GTY597943Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Interlock
        NOTE:
        • When rotating the spiral cable sub-assembly, make sure to push on the interlock shown in the illustration to release the interlock mechanism.
        • Do not turn the spiral cable sub-assembly using the airbag wire harness.
        • 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 or spiral cable with sensor sub-assembly with a new one.
      2. While pushing on the interlock shown in the illustration, rotate the spiral cable sub-assembly clockwise approximately 2.5 times to the position where the alignment marks are aligned and the flat cable shown in the illustration is visible.

        HINT: 

        The spiral cable sub-assembly can be rotated approximately 2.5 turns to both the left and right from the center.

        GTY546432Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Flat Cable
        *b Interlock
        *c Alignment Mark
  2. INSTALL SPIRAL CABLE SUB-ASSEMBLY 
    1. Align the 2 pins and 2 guides, and engage the 6 claws to install the spiral cable sub-assembly to the steering sensor.
      GTY492551Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Guide
      *b Pin
      *c Lock Pin
      NOTE:
      • Do not remove the lock pin before the spiral cable sub-assembly is installed to the steering sensor.
      • Do not damage the 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 engaged. Therefore, make sure that both guides are aligned properly when installing the spiral cable sub-assembly to the steering sensor.
    2. Remove the lock pin from the steering sensor.
      GTY375894Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY 
    NOTE:
    • Do not replace the spiral cable with sensor sub-assembly with the auxiliary battery connected and the power switch on (IG).
    • Do not rotate the spiral cable with sensor sub-assembly without the steering wheel assembly installed, with the auxiliary battery connected and the power switch on (IG).
    • Ensure that the steering wheel assembly is installed and aligned straight when inspecting the steering sensor.
    1. Check that the power switch is off.
    2. Check that the cable is disconnected from the negative (-) auxiliary battery terminal.
      WARNING:

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

      GTY581108Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check that the front wheels are aligned facing straight ahead.
    4. Engage the 3 claws to install the spiral cable with sensor sub-assembly.
    5. Connect each connector.
  4. INSTALL UPPER STEERING COLUMN COVER 

    Refer to PROCEDURE - Step 13

  5. INSTALL LOWER STEERING COLUMN COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 14

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

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

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

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

      GTY581108Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check if the spiral cable with sensor sub-assembly is centered.
      GTY594561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Flat Cable

      HINT: 

      When the spiral cable with sensor sub-assembly is centered, the part (A) is positioned at the top and the flat cable shown in the illustration is visible.

    4. If the spiral cable with sensor sub-assembly is not centered, center it.
      1. While pushing on the interlock shown in the illustration, rotate the spiral cable with sensor sub-assembly counterclockwise slowly by hand until it stops.
        GTY564678Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Interlock
        NOTE:
        • When rotating the spiral cable with sensor sub-assembly, make sure to push on the interlock shown in the illustration to release the interlock mechanism.
        • Do not turn the spiral cable with sensor sub-assembly using the airbag wire harness.
      2. While pushing on the interlock shown in the illustration, rotate the spiral cable with sensor sub-assembly clockwise approximately 2.5 times to the position where the part (A) is positioned at the top and the flat cable shown in the illustration is visible.
        GTY605141Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Interlock
        *b Flat Cable

        HINT: 

        The spiral cable with sensor sub-assembly can be rotated approximately 2.5 times to both the left and right from the center.

  8. INSTALL STEERING WHEEL ASSEMBLY 

    Refer to PROCEDURE - Step 7

  9. PERFORM CALIBRATION (w/ Intelligent Clearance Sonar System) 

    Refer to CALIBRATION [11/2015 - 12/2018]