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Steering Pad Switch Circuit [01/2019 - 09/2022]: Procedure

WARNING: This page is about a different car, the 2022 Toyota Corolla, 2021 Toyota Corolla, and 2020 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSPECT STEERING PAD SWITCH ASSEMBLY 
    1. Remove the steering pad switch assembly.

      Refer to REMOVAL [01/2019 - 03/2019] , or refer to REMOVAL [03/2019 - 09/2022]

    2. Inspect the steering pad switch assembly.

      Refer to INSPECTION [01/2019 - 03/2019] , or refer to INSPECTION [03/2019 - 09/2022]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE STEERING PAD SWITCH ASSEMBLY. Refer to  REMOVAL [01/2019 - 03/2019]  , or refer to  REMOVAL [03/2019 - 09/2022] 

    Result: 

    OK 

    See step  2

  2. INSPECT SPIRAL CABLE SUB-ASSEMBLY 
    1. Remove the spiral cable sub-assembly.

      Refer to REMOVAL [01/2019 - 03/2019] , or refer to REMOVAL [03/2019 - 09/2022]

    2. Inspect the spiral cable sub-assembly.

      Refer to INSPECTION [06/2018 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  REMOVAL [01/2019 - 03/2019]  , or refer to  REMOVAL [03/2019 - 09/2022] 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - FORWARD RECOGNITION CAMERA) 
    1. Disconnect the I82 spiral cable sub-assembly connector.
    2. Disconnect the T9 forward recognition camera connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I82-6 (DIST) - T9-3 (LKSW) Always Below 1 Ω
      I82-6 (DIST) or T9-3 (LKSW) - Body ground Always 10 kΩ or higher
    4. Connect the T9 forward recognition camera connector.
    5. Connect the I82 spiral cable sub-assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND) 
    1. Disconnect the I82 spiral cable sub-assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I82-2 (ECC) - Body ground Always Below 1 Ω
    3. Connect the I82 spiral cable sub-assembly connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [01/2019 - 09/2022] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR