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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different car >> Section 353 (Meter / Gauge System (Except 12.3 Inch) Symptom Tests (2 Of 2) & Circuit Tests) >> METER / GAUGE SYSTEM (except 12.3 Inch Display) >> Steering Pad Switch Circuit [11/2022 - ] >> Procedure

Steering Pad Switch Circuit [11/2022 - ]: Procedure

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  1. PERFORM ACTIVE TEST USING GTS 
    1. Perform the Active Test according to the display on the GTS.

      Body Electrical > Combination Meter > Active Test 

      Tester Display Measurement Item Control Range Diagnostic Note
      Multi Switch (Up) Performs the same operation as pressing the up switch on steering pad switch OFF or ON -
      Multi Switch (Down) Performs the same operation as pressing the down switch on steering pad switch OFF or ON -
      Multi Switch (Left) Performs the same operation as pressing the left switch on steering pad switch OFF or ON -
      Multi Switch (Right) Performs the same operation as pressing the right switch on steering pad switch OFF or ON -
      Multi Switch (Enter) Performs the same operation as pressing the OK switch on steering pad switch OFF or ON -
      Multi Switch (Back) Performs the same operation as pressing the back switch on steering pad switch OFF or ON -

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Multi Switch (Up)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Multi Switch (Down)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Multi Switch (Left)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Multi Switch (Right)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Multi Switch (Enter)

      Body Electrical > Combination Meter > Active Test 

      Tester Display
      Multi Switch (Back)

      Result

      Result Proceed to
      Active Test can be performed correctly A
      Active Test cannot be performed correctly B

    Result: 

    B 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [11/2022 - 09/2024] , or refer to REMOVAL [09/2024 - ]

    Result: 

    A 

    See step  2

  2. READ VALUE USING GTS 
    1. Read the Data List according to the display on the GTS.

      Body Electrical > Combination Meter > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Multi Switch (Up) Up switch on steering pad switch operation OFF or ON OFF: Switch released
      ON: Switch pushed      		 -
      Multi Switch (Down) Down switch on steering pad switch operation OFF or ON OFF: Switch released
      ON: Switch pushed      		 -
      Multi Switch (Left) Left switch on steering pad switch operation OFF or ON OFF: Switch released
      ON: Switch pushed      		 -
      Multi Switch (Right) Right switch on steering pad switch operation OFF or ON OFF: Switch released
      ON: Switch pushed      		 -
      Multi Switch (Enter) OK switch on steering pad switch operation OFF or ON OFF: Switch released
      ON: Switch pushed      		 -
      Multi Switch (Back) Back switch on steering pad switch operation OFF or ON OFF: Switch released
      ON: Switch pushed      		 -

      Body Electrical > Combination Meter > Data List 

      Tester Display
      Multi Switch (Up)
      Multi Switch (Down)
      Multi Switch (Left)
      Multi Switch (Right)
      Multi Switch (Enter)
      Multi Switch (Back)

      Result

      Result Proceed to
      The value of the Data List item is correct, and the combination meter assembly operates correctly A
      The value of the Data List item is correct, but the combination meter assembly does not operate correctly B
      The Data List item changes correctly C

    Result: 

    A 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

    Result: 

    B 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [11/2022 - 09/2024] , or refer to REMOVAL [09/2024 - ]

    Result: 

    C 

    See step  3

  3. INSPECT STEERING PAD SWITCH ASSEMBLY 

    Refer to INSPECTION [09/2022 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE STEERING PAD SWITCH ASSEMBLY 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    OK 

    See step  4

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY 

    Refer to INSPECTION [06/2018 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    OK 

    See step  5

  5. CHECK COMBINATION METER ASSEMBLY (OUTPUT VOLTAGE) 
    GTY1112541Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    *a Front view of wire harness connector
    (to Spiral Cable Sub-assembly)
    1. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      I82-10 (+DP2) - Body ground Ignition switch ON 4.8 to 5.2 V
      I82-11 (+DP) - Body ground Ignition switch ON 4.8 to 5.2 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  6

  6. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      except Knobless Radio and Display Receiver A
      for Knobless Radio and Display Receiver B

    Result: 

    B 

    See step  8

    Result: 

    A 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY AND BODY GROUND) 
    1. Disconnect the I55 radio and display receiver assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I55-20 (SWG) - I82-4 (EAU) Always Below 1 Ω
      I55-1 (GND1) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    Refer to REMOVAL [11/2022 - 09/2024] , or refer to REMOVAL [09/2024 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  8. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY AND BODY GROUND) 
    1. Disconnect the I184 and I185 radio and display receiver assembly connectors.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I185-23 (SWG) - I82-4 (EAU) Always Below 1 Ω
      I184-7 (GND1) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    Refer to REMOVAL [11/2022 - 09/2024] , or refer to REMOVAL [09/2024 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  9. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - COMBINATION METER ASSEMBLY) 
    1. Disconnect the I5 combination meter assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I82-10 (+DP2) - I5-12 (MSTI) Always Below 1 Ω
      I82-11 (+DP) - I5-29 (MSM+) Always Below 1 Ω
      I82-10 (+DP2) or I5-12 (MSTI) - Body ground Always 10 kΩ or higher
      I82-11 (+DP) or I5-29 (MSM+) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY 

    Refer to REMOVAL [11/2022 - 09/2024] , or refer to REMOVAL [09/2024 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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