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Shift Paddle Switch Circuit [11/2022 - ]: Procedure

WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING GTS (SPORTS SHIFT UP SIGNAL, SPORTS SHIFT DOWN SIGNAL) 
    1. Read the values displayed on the GTS.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Sports Shift UP Signal
      Sports Shift DOWN Signal

      Result

      Result Proceed to
      The display changes according to the shift paddle switch (transmission shift switch assembly) operation. A
      The display does not change according to the shift paddle switch (transmission shift switch assembly) operation. B
    2. Turn the ignition switch off.

    Result: 

    A 

    CHECK FOR INTERMITTENT PROBLEMS 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2021 - ]

    Result: 

    B 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (SHIFT PADDLE SWITCH CIRCUIT) 
    1. Disconnect the hybrid vehicle control ECU connector.
    2. Disconnect the transmission control switch (shift lock control unit assembly) connector.
    3. Measure the resistance according to the value(s) in the table below when the shift paddle switch (transmission shift switch assembly) is moved to each position.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I249-31 (SFTU) - I249-43 (CCSG) Shift paddle switch RH (+) operated 13 Ω or less
      I249-18 (SFTD) - I249-43 (CCSG) Shift paddle switch LH (-) operated 13 Ω or less
      I249-31 (SFTU) - I249-43 (CCSG) Shift paddle switch RH (+) not operated 10 kΩ or higher
      I249-18 (SFTD) - I249-43 (CCSG) Shift paddle switch LH (-) not operated 10 kΩ or higher
    4. Reconnect the transmission control switch (shift lock control unit assembly) connector.
    5. Reconnect the hybrid vehicle control ECU connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU 

    Refer to REMOVAL [11/2022 - 12/2024] , or refer to REMOVAL [12/2024 - ]

    Result: 

    NG 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the hybrid vehicle control ECU connector.
    2. Disconnect the spiral cable with sensor sub-assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I249-31 (SFTU) - I82-8 (SUP) Always Below 1 Ω
      I249-18 (SFTD) - I82-1 (SDN) Always Below 1 Ω
      I249-43 (CCSG) - I82-2 (ECC) Always Below 1 Ω
      I249-31 (SFTU) or I82-8 (SUP) - Body ground Always 10 kΩ or higher
      I249-18 (SFTD) or I82-1 (SDN) - Body ground Always 10 kΩ or higher
      249-43 (CCSG) or I82-2 (ECC) - Body ground Always 10 kΩ or higher
    4. Reconnect the spiral cable with sensor sub-assembly connector.
    5. Reconnect the hybrid vehicle control ECU connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY 
    1. Inspect the spiral cable sub-assembly.

      Refer to INSPECTION [09/2021 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    OK 

    See step  5

  5. INSPECT SHIFT PADDLE SWITCH LH (TRANSMISSION SHIFT SWITCH ASSEMBLY) 
    1. Inspect the shift paddle switch LH (transmission shift switch assembly).

      Refer to INSPECTION [11/2022 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SHIFT PADDLE SWITCH LH (TRANSMISSION SHIFT SWITCH ASSEMBLY) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    OK 

    See step  6

  6. INSPECT SHIFT PADDLE SWITCH RH (TRANSMISSION SHIFT SWITCH ASSEMBLY) 
    1. Inspect the shift paddle switch RH (transmission shift switch assembly).

      Refer to INSPECTION [11/2022 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SHIFT PADDLE SWITCH RH (TRANSMISSION SHIFT SWITCH ASSEMBLY) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    OK 

    See step  7

  7. INSPECT NO. 1 SWITCH WIRE 
    1. Disconnect the No. 1 switch wire connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      z36-2 (SUP) - z36-3 (ECC) "+" (Up shift) shift paddle switch operated and held Below 1 Ω
      "+" (Up shift) shift paddle switch not operated 10 kΩ or higher
      z36-4 (SDN) - z36-3 (ECC) "-" (Down shift) shift paddle switch operated and held Below 1 Ω
      "-" (Down shift) shift paddle switch not operated 10 kΩ or higher
      GTY1118131Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Spiral Cable Sub-assembly)
    3. Reconnect the No. 1 switch wire connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2021 - ]

    Result: 

    NG 

    REPLACE NO. 1 SWITCH WIRE 

    Refer to PROCEDURE - Step 4

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