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Shift Paddle Switch Circuit [09/2023 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING TECHSTREAM (SPORTS SHIFT UP SIGNAL, SPORTS SHIFT DOWN SIGNAL) 
    1. Read the Data List using the GTS.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Sports Shift UP Signal
      Sports Shift DOWN Signal

      Powertrain > Hybrid Control > Data List 

      Tester Display Measurement Item Range Normal Condition
      Sports Shift UP Signal Sports shift UP signal ON or OFF ON:
      Shift paddle switch RH (+) operated
      OFF:
      Shift paddle switch RH (+) not operated
      Sports Shift DOWN Signal Sport shift DOWN signal ON or OFF ON:
      Shift paddle switch LH (-) operated
      OFF:
      Shift paddle switch LH (-) not operated

      Result

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

    Result: 

    A 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  ELECTRONIC CIRCUIT INSPECTION PROCEDURE [09/2023 - ] 

    Result: 

    B 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - HYBRID VEHICLE CONTROL ECU ASSEMBLY) 
    1. Disconnect the hybrid vehicle control ECU assembly connector.
    2. 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
      D44-31 (SFTU) - Body ground Shift paddle switch RH (+) operated Below 2.5 Ω
      D44-18 (SFTD) - Body ground Shift paddle switch LH (-) operated Below 2.5 Ω
      D44-31 (SFTU) - Body ground Shift paddle switch RH (+) not operated 1 MΩ or higher
      D44-18 (SFTD) - Body ground Shift paddle switch LH (-) not operated 1 MΩ or higher
      GTY1231635Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Hybrid Vehicle Control ECU Assembly)

      Result

      Proceed to
      OK
      NG
    3. Reconnect the hybrid vehicle control ECU assembly connector.

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [09/2023 - 12/2023]  , or refer to  REMOVAL [12/2023 - ] 

    Result: 

    NG 

    See step  3

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

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      D5-8 (SUP) - D44-31 (SFTU) Always Below 1 Ω
      D5-1 (SDN) - D44-18 (SFTD) Always Below 1 Ω
      D5-2 (ECC) -D44-43 (CCSG) Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      D5-8 (SUP) or D44-31 (SFTU) - Body ground Always 10 kΩ or higher
      D5-1 (SDN) or D44-18 (SFTD) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG
    4. Reconnect the hybrid vehicle control ECU assembly connector.
    5. Reconnect the spiral cable with sensor sub-assembly connector.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. INSPECT SPIRAL CABLE SUB-ASSEMBLY 

    Refer to INSPECTION [09/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  REMOVAL [09/2023 - 12/2023]  , or refer to  REMOVAL [12/2023 - ] 

    Result: 

    OK 

    See step  5

  5. INSPECT SHIFT PADDLE SWITCH LH (NO. 1 TRANSMISSION SHIFT SWITCH ASSEMBLY) 

    Refer to INSPECTION [09/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE SHIFT PADDLE SWITCH LH (NO. 1 TRANSMISSION SHIFT SWITCH ASSEMBLY). Refer to  REMOVAL [09/2023 - ] 

    Result: 

    OK 

    See step  6

  6. INSPECT SHIFT PADDLE SWITCH RH (NO. 2 TRANSMISSION SHIFT SWITCH ASSEMBLY) 

    Refer to INSPECTION [09/2023 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE SHIFT PADDLE SWITCH RH (NO. 2 TRANSMISSION SHIFT SWITCH ASSEMBLY). Refer to  REMOVAL [09/2023 - ] 

    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 when the shift paddle switch (transmission shift switch assembly) is moved to each position.

      Standard Resistance

      Tester Connection Condition Specified Condition
      z10-4 (SDN) - z10-3 (ECC) Shift paddle switch LH (-) operated Below 2.5 Ω
      z10-2 (SUP) - z10-3 (ECC) Shift paddle switch RH (+) operated Below 2.5 Ω
      z10-4 (SDN) - z10-3 (ECC) Shift paddle switch LH (-) not operated 1 MΩ or higher
      z10-2 (SUP) - z10-3 (ECC) Shift paddle switch RH (+) not operated 1 MΩ or higher
    3. Reconnect the No. 1 switch wire connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  ELECTRONIC CIRCUIT INSPECTION PROCEDURE [09/2023 - ] 

    Result: 

    NG 

    REPLACE NO. 1 SWITCH WIRE. Refer to  REMOVAL [09/2023 - ] 

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