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Transmission Control Switch Circuit [09/2015 - 08/2019]: Procedure

  1. READ VALUE USING TECHSTREAM (Shift SW Status (S Range)) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Transmission / Data List
    5. Read the Data List according to the display on the Techstream.

      Powertrain > Transmission > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Shift SW Status (S Range) Sport (S*1 or M*2) mode select switch status ON or OFF
      • ON: Shift lever in S*1, M*2, "+" or "-"
      • OFF: Shift lever not in S*1, M*2, "+" or "-"
      		 -

      Powertrain > Transmission > Data List 

      Tester Display
      Shift SW Status (S Range)

      HINT: 

      • *1: w/o Shift Paddle Switch
      • *2: w/ Shift Paddle Switch

      Result

      Result Proceed to
      Data List values are normal A
      Data List values are not normal B

    Result: 

    B 

    See step  6

    Result: 

    A 

    See step  2

  2. READ VALUE USING TECHSTREAM (SPORT SHIFT UP SW AND SPORT SHIFT DOWN SW) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Engine / Data List
    5. Read the Data List according to the display on the Techstream.

      Powertrain > Engine > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Sport Shift Up SW Sport shift up switch status ON or OFF
      • ON: Shift lever held in "+" or "+" shift paddle switch pulled
      • OFF: Shift lever not held in "+" and "+" shift paddle switch released
      		 -
      Sport Shift Down SW Sport shift down switch status ON or OFF
      • ON: Shift lever held in "-" or "-" shift paddle switch pulled
      • OFF: Shift lever not held in "-" and "-" shift paddle switch released
      		 -

      Powertrain > Engine > Data List 

      Tester Display
      Sport Shift Up SW
      Sport Shift Down SW

      Result

      Result Proceed to
      Data List values are normal A
      Data List values are not normal B

    Result: 

    A 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [09/2015 - 08/2019] 

    Result: 

    B 

    See step  3

  3. INSPECT TRANSMISSION CONTROL SWITCH (TRANSMISSION FLOOR SHIFT ASSEMBLY) 
    1. Disconnect the J21 transmission control switch connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY682737Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Transmission Control Switch (Transmission Floor Shift Assembly))

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 (SFTU) - 2 (E) Shift lever held in "+" (Up shift) Below 1 Ω
      Shift lever not held in "+" (Up shift) 10 kΩ or higher
      1 (SFTD) - 2 (E) Shift lever held in "-" (Down shift) Below 1 Ω
      Shift lever not held in "-" (Down shift) 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (TRANSMISSION CONTROL SWITCH). Refer to  COMPONENTS [09/2015 - ] 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BODY GROUND) 
    1. Disconnect the J21 transmission control switch connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J21-2 (E) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM) 
    1. Connect the J21 transmission floor shift assembly (transmission control switch) connector.
    2. Disconnect the A37 ECM connector.
    3. w/ Shift Paddle Switch:

      Disconnect the spiral cable sub-assembly connector.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A37-38 (SFTU) - Body ground Shift lever held in "+" (Up shift) Below 1 Ω
      Shift lever not held in "+" (Up shift) 10 kΩ or higher
      A37-37 (SFTD) - Body ground Shift lever held in "-" (Down shift) Below 1 Ω
      Shift lever not held in "-" (Down shift) 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [09/2015 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM) 

  6. INSPECT TRANSMISSION CONTROL SWITCH (TRANSMISSION FLOOR SHIFT ASSEMBLY) 
    1. Disconnect the J21 transmission control switch connector.
      GTY658972Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Transmission Control Switch (Transmission Floor Shift Assembly))
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      4 (IG) - 5 (S) Shift lever in S*1, M*2, "+" or "-" Below 1 Ω
      Shift lever not in S*1, M*2, "+" or "-" 10 kΩ or higher

      *1: w/o Shift Paddle Switch*2: w/ Shift Paddle Switch

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE TRANSMISSION FLOOR SHIFT ASSEMBLY (TRANSMISSION CONTROL SWITCH). Refer to  COMPONENTS [09/2015 - ] 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH (POWER SOURCE)) 
    1. Disconnect the J21 transmission control switch connector.
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      J21-4 (IG) - Body ground Engine switch on (IG) 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM) 
    1. Disconnect the J21 transmission control switch connector.
    2. Disconnect the A37 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J21-5 (S) - A37-17 (S) Always Below 1 Ω
      J21-5 (S) or A37-17 (S) - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [09/2015 - 08/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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