LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2015 >> NX 200t Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission (U661E) - Diagnostic Codes (2 Of 2) & Circuit Tests) >> Automatic Transaxle System >> Transmission Control Switch Circuit [10/2014 - 09/2017] >> Procedure

Transmission Control Switch Circuit [10/2014 - 09/2017]: Procedure

WARNING: This page is about a different variant/trim than selected.
  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. According to the display on the Techstream, read the Data List.

      Powertrain > Transmission > Data List 

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

      Powertrain > Transmission > Data List 

      Tester Display
      Shift SW Status (S Range)

      Result

      Result Proceed to
      Data display is within Normal Condition range A
      Data display is not within Normal Condition range 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. According to the display on the Techstream, read the Data List.

      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 "+" (up-shift)
      • OFF: Shift lever not held in "+" (up-shift)
      		 -
      Sport Shift Down SW Sport shift down switch status ON or OFF
      • ON: Shift lever held in "-" (down-shift)
      • OFF: Shift lever not held in "-" (down-shift)
      		 -

      Powertrain > Engine > Data List 

      Tester Display
      Sport Shift Up SW
      Sport Shift Down SW

      Result

      Result Proceed to
      Data display is within Normal Condition range A
      Data display is not within Normal Condition range B

    Result: 

    A 

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [10/2014 - 09/2017] 

    Result: 

    B 

    See step  3

  3. INSPECT TRANSMISSION CONTROL SWITCH (SHIFT LEVER ASSEMBLY) 
    1. Disconnect the transmission control switch connector.
      GTY508347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Transmission Control Switch)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      3 (SFTU) - 2 (E) Shift lever held in "+" Below 1 Ω
      3 (SFTU) - 2 (E) Shift lever in M 10 kΩ or higher
      1 (SFTD) - 2 (E) Shift lever held in "-" Below 1 Ω
      1 (SFTD) - 2 (E) Shift lever in M 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SHIFT LEVER ASSEMBLY. Refer to  REMOVAL [10/2014 - ] 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BODY GROUND) 
    1. Disconnect the transmission control switch connector.
      GTY499404Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Transmission Control Switch)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I23-2 (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. Disconnect the ECM connector.
      GTY504801Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to ECM)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A35-42 (SFTU) - Body ground Shift lever held in "+" (Up-shift) Below 1 Ω
      A35-42 (SFTU) - Body ground Shift lever in M 10 kΩ or higher
      A35-43 (SFTD) - Body ground Shift lever held in "-" (Down-shift) Below 1 Ω
      A35-43 (SFTD) - Body ground Shift lever in M 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 [10/2014 - 09/2017] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  6. INSPECT TRANSMISSION CONTROL SWITCH (SHIFT LEVER ASSEMBLY) 
    1. Disconnect the transmission control switch connector.
      GTY508346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Transmission Control Switch)
    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 M Below 1 Ω
      4 (IG) - 5 (S) Shift lever not in M 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SHIFT LEVER ASSEMBLY. Refer to  REMOVAL [10/2014 - ] 

    Result: 

    OK 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH (POWER SOURCE)) 
    1. Disconnect the transmission control switch connector.
      GTY499405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Transmission Control Switch)
    2. Turn the engine switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      I23-4 (IG) - Body ground Engine switch on (IG) 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CHECK POWER SOURCE CIRCUIT 

    Result: 

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM) 
    1. Disconnect the I23 transmission control switch connector.
    2. Disconnect the A35 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I23-5 (S) - A35-59 (S) Always Below 1 Ω
      I23-5 (S) or A35-59 (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 [10/2014 - 09/2017] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

scientia non olet · About LEMON Manuals