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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 145 (Automatic Transmission System (Aa81E, For 2GR-FKS) - Diagnostic Codes (4 Of 4) & Circuit Tests) >> AUTOMATIC TRANSMISSION SYSTEM (for 2GR-FKS) >> Shift Paddle Switch Circuit [10/2017 - ] >> Procedure

Shift Paddle Switch Circuit [10/2017 - ]: Procedure

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  1. CHECK HARNESS AND CONNECTOR (SHIFT PADDLE SWITCH - ECM) 
    1. Disconnect the A106 ECM connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A106-38 (SFTU) - Body ground Pull continuously "+" (Up-shift) Below 2.5 Ω
      Release "+" (Up-shift) 1 MΩ or higher
      A106-37 (SFTD) - Body ground Pull continuously "-" (Down-shift) Below 2.5 Ω
      Release "-" (Down-shift) 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - BODY GROUND) 
    1. Disconnect the K26 spiral cable sub-assembly connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      K26-2 (ECC) - Body ground Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE SUB-ASSEMBLY - ECM) 
    1. Disconnect the K26 spiral cable sub-assembly connector.
    2. Disconnect the A106 ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A106-38 (SFTU) - K26-8 (SUP) Always Below 1 Ω
      A106-37 (SFTD) - K26-1 (SDN) Always Below 1 Ω
      A106-38 (SFTU) or K26-8 (SUP) - Body ground Always 10 kΩ or higher
      A106-37 (SFTD) or K26-1 (SDN) - Body ground Always 10 kΩ or higher

      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 [10/2016 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  COMPONENTS [10/2016 - ] 

    Result: 

    OK 

    See step  5

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

      Refer to REMOVAL [10/2016 - ]

      GTY512901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Shift Paddle Switch LH (Transmission Shift Switch Assembly))
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      B-1 (SDN) - B-2 (ECC) Pull continuously "-" (Down-shift) Below 2.5 Ω
      Release "-" (Down-shift) 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SHIFT PADDLE SWITCH LH (TRANSMISSION SHIFT SWITCH ASSEMBLY). Refer to  COMPONENTS [10/2016 - ] 

    Result: 

    OK 

    See step  6

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

      Refer to REMOVAL [10/2016 - ]

      GTY497450Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Shift Paddle Switch RH (Transmission Shift Switch Assembly))
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A-3 (SUP) - A-2 (ECC) Pull continuously "+" (Up-shift) Below 2.5 Ω
      Release "+" (Up-shift) 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SHIFT PADDLE SWITCH RH (TRANSMISSION SHIFT SWITCH ASSEMBLY). Refer to  COMPONENTS [10/2016 - ] 

    Result: 

    OK 

    See step  7

  7. INSPECT NO. 1 SWITCH WIRE 
    1. Install the transmission shift switch assembly (shift paddle switch LH) and transmission shift switch assembly (shift paddle switch RH).
      GTY674107Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Spiral Cable Sub-assembly)

      Refer to INSTALLATION [10/2016 - ]

    2. Disconnect the z15 No. 1 switch wire connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      z15-1 (SUP) - z15-4 (ECC) Pull continuously "+" (Up-shift) Below 2.5 Ω
      Release "+" (Up-shift) 1 MΩ or higher
      z15-3 (SDN) - z15-4 (ECC) Pull continuously "-" (Down-shift) Below 2.5 Ω
      Release "-" (Down-shift) 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    REPLACE NO. 1 SWITCH WIRE. Refer to  COMPONENTS [10/2016 - ] 

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