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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 32 (Hybrid Control System (For Nickel Metal Hydride Battery) - Circuit Tests (2 Of 2)) >> HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY) >> Transmission Control Switch Circuit [06/2018 - ] >> Procedure

Transmission Control Switch Circuit [06/2018 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ VALUE USING TECHSTREAM (SPORTS SHIFT POSITION) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Data List / Sports Shift Position.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Sports Shift Position
    4. Read the value displayed on the Techstream.

      Result

      Result Proceed to
      The Techstream display changes according to the shift lever operation A
      The Techstream display does not change according to the shift lever operation B
    5. Turn the power switch off.

    Result: 

    B 

    See step  4

    Result: 

    A 

    See step  2

  2. READ VALUE USING TECHSTREAM (SPORTS SHIFT UP SIGNAL, SPORTS SHIFT DOWN SIGNAL) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Enter the following menus: Powertrain / Hybrid Control / Data List / Sports Shift UP Signal, Sports Shift DOWN Signal.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Sports Shift UP Signal
      Sports Shift DOWN Signal
    4. Read the value displayed on the Techstream.

      Result

      Result Proceed to
      The Techstream display changes according to the transmission control switch (shift lock control unit assembly) operation A
      The Techstream display does not change according to the transmission control switch (shift lock control unit assembly) operation B
    5. Turn the power switch off.

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  3

  3. CHECK FOR INTERMITTENT PROBLEMS 

    Refer to CHECK FOR INTERMITTENT PROBLEMS [06/2018 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA 

  4. CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) 
    1. Disconnect the G26 transmission control switch (shift lock control unit assembly) connector.
    2. Turn the power switch on (IG).
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      G26-4 (IG) - Body ground Power switch on (IG) 11 to 14 V
      GTY787280Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Transmission Control Switch (Shift Lock Control Unit Assembly))
    4. Turn the power switch off.
    5. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      G26-4 (IG) - Body ground Power switch off Below 1 V
    6. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G26-2 (E) - Body ground Power switch off Below 1 Ω
    7. Reconnect the G26 transmission control switch (shift lock control unit assembly) connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CHECK POWER SOURCE CIRCUIT 

    Result: 

    OK 

    See step  5

  5. INSPECT TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY) 
    1. Inspect the transmission control switch (shift lock control unit assembly).

      Refer to PROCEDURE - Step 2

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY. Refer to  REMOVAL [06/2018 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY)) 
    1. Disconnect the G60 hybrid vehicle control ECU connector.
      GTY817026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU)
    2. Disconnect the G20 spiral cable sub-assembly connector.
    3. Turn the power switch on (IG).
    4. Measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

      Standard Voltage

      Tester Connection Condition Specified Condition
      G60-1 (M) - Body ground Power switch on (IG)
      Shift lever in S, "+" or "-"      		 11 to 14 V
      Power switch on (IG)
      Except shift lever in S, "+" and "-"      		 Below 1 V
      NOTE:

      If the power switch is turned on (IG) with the hybrid vehicle control ECU connector disconnected, other DTCs will be stored. After performing the inspection, clear the DTCs.

    5. Turn the power switch off.
    6. Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G60-9 (SFTU) - Body ground Shift lever held in "+" Below 13 Ω
      G60-9 (SFTU) - Body ground Shift lever in S 10 kΩ or higher
      G60-8 (SFTD) - Body ground Shift lever held in "-" Below 13 Ω
      G60-8 (SFTD) - Body ground Shift lever in S 10 kΩ or higher
    7. Reconnect the G20 spiral cable sub-assembly connector.
    8. Reconnect the G60 hybrid vehicle control ECU connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  7. INSPECT TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY) 
    1. Disconnect the G26 transmission control switch (shift lock control unit assembly) connector.
    2. Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G26-3 (SFTU) - G26-2 (E) Shift lever held in "+" Below 13 Ω
      G26-3 (SFTU) - G26-2 (E) Shift lever in S 10 kΩ or higher
      G26-1 (SFTD) - G26-2 (E) Shift lever held in "-" Below 13 Ω
      G26-1 (SFTD) - G26-2 (E) Shift lever in S 10 kΩ or higher
      GTY835483Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (to Transmission Control Switch (Shift Lock Control Unit Assembly))
    3. Reconnect the G26 transmission control switch (shift lock control unit assembly) connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY. Refer to  REMOVAL [06/2018 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY) - HYBRID VEHICLE CONTROL ECU) 
    1. Disconnect the G60 hybrid vehicle control ECU connector.
    2. Disconnect the G20 spiral cable sub-assembly connector.
    3. Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G60-9 (SFTU) - Body ground Shift lever held in "+" Below 13 Ω
      Shift lever in S 10 kΩ or higher
      G60-8 (SFTD) - Body ground Shift lever held in "-" Below 13 Ω
      Shift lever in S 10 kΩ or higher
      GTY817025Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to Hybrid Vehicle Control ECU)
    4. Reconnect the G20 spiral cable sub-assembly connector.
    5. Reconnect the G60 hybrid vehicle control ECU connector.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022]  , or refer to  REMOVAL [09/2022 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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