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Drive Start Control [11/2021 - ]: Procedure

  1. PAST ACTIVATION CONFIRMATION 
    1. Check if the customer operated the vehicle in a way that would cause the drive start control to operate.
      • Pattern A (When all of the following conditions are met, control starts.)
        • The accelerator pedal is open by approximately 1/5 or more.
        • The shift state is changed from P to any forward position D (other forward shift position) or R.
      • Pattern B (When all of the following conditions are met, control starts.)
        • The accelerator pedal is open by approximately 1/5 or more.
        • The shift lever is moved from R to any forward position D (other forward shift position), any forward position D (other forward shift position) to R, or N to R.

      HINT: 

      Operation may not be possible in certain situations.

      GTY922167Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Items Controlled
        • Engine output is restricted.
      • Deactivation Conditions
        • The accelerator pedal is released.
        • P or N is selected.

      HINT: 

      • The restraint level for engine output differs for pattern A and pattern B.
      • Engine output is corrected according to the slope incline when control is in operation.
      • Control will not operate when TRC operation is stopped.
      • Control will also not operate under the following conditions. (if equipped)
        • When in auto LSD mode
        • When the transfer switch is operated to switch the status to L4
        • When the center differential is locked
        • When TRAIL mode is on

      Result

      Result Proceed to
      Performed A
      Not performed B

    Result: 

    B 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [11/2021 - ] 

    Result: 

    A 

    See step  2

  2. CHECK DTC OUTPUT (HEALTH CHECK) 
    1. Perform the Health Check using the GTS.
    2. Read the DTCs.

      Result

      Result Proceed to
      DTCs are not output (Hunting) A
      DTCs are not output (Hesitation/poor acceleration) B
      DTCs are output C

    Result: 

    B 

    See step  6

    Result: 

    C 

    GO TO DTC CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [11/2021 - 03/2022]  , or Refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2022 - 03/2023]  , or Refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2023 - 03/2024]  , or Refer to  DIAGNOSTIC TROUBLE CODE CHART [03/2024 - ] 

    Result: 

    A 

    See step  3

  3. READ VALUE USING GTS (FR, FL, RR, RL WHEEL SPEED) 
    1. Start the engine.
    2. Read the value displayed on the GTS.

      Chassis > Brake/EPB > Data List 

      Tester Display
      FR Wheel Speed
      FL Wheel Speed
      RR Wheel Speed
      RL Wheel Speed

      Standard

      GTS Display Condition Specified Condition
      FR Wheel Speed
      FL Wheel Speed
      RR Wheel Speed
      RL Wheel Speed      		 Vehicle stopped, engine running 0 km/h (0 mph)
      Vehicle being driven at constant speed between 16.1 to 64.4 km/h (10 to 40 mph) No large fluctuations when driving at a constant speed
      WARNING:

      When performing a drive test, obey all speed limits and traffic laws.

      HINT: 

      The data while driving can be stored by using the GTS data store function.

      The stored data can be checked after driving.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    INSPECT FRONT OR REAR SPEED SENSOR 

    Result: 

    OK 

    See step  4

  4. READ VALUE USING GTS (OUTPUT AXIS SPEED) 
    1. Start the engine.
    2. Read the value displayed on the GTS.

      Powertrain > Engine > Data List 

      Tester Display
      Output Axis Speed

      Standard

      GTS Display Condition Specified Condition
      Output Axis Speed Vehicle stopped, engine running 0 rpm
      Vehicle being driven at a constant speed of approximately 60 km/h (37 mph) No large fluctuations when driving at a constant speed
      WARNING:

      When performing a drive test, obey all speed limits and traffic laws.

      HINT: 

      Data can be captured relatively easily by using the snapshot function in the Data List. Confirm the data after performing the drive test.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    INSPECT TRANSMISSION REVOLUTION SENSOR. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ] 

    Result: 

    OK 

    See step  5

  5. READ VALUE USING GTS (FORWARD AND REARWARD G) 
    1. Start the engine.
    2. Read the value displayed on the GTS.

      Chassis > Brake/EPB > Data List 

      Tester Display
      Forward and Rearward G

      Standard

      GTS Display Condition Specified Condition
      Forward and Rearward G During deceleration Value changes with vehicle speed
      During acceleration Value changes with vehicle speed
      WARNING:

      When performing a drive test, obey all speed limits and traffic laws.

      HINT: 

      The data while driving can be stored by using the GTS data store function.

      The stored data can be checked after driving.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [11/2021 - ] 

    Result: 

    NG 

    INSPECT AIRBAG SENSOR ASSEMBLY. Refer to  TERMINALS OF ECU [11/2021 - ] 

  6. READ VALUE USING GTS (SHIFT POSITION) 
    1. Read the value displayed on the GTS.

      Powertrain > Transmission > Data List 

      Tester Display
      Shift Position (Current Position)

      OK

      Condition Specified Condition
      Select shift state Matches currently selected shift state

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO ELECTRONIC SHIFT LEVER SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ] 

    Result: 

    OK 

    See step  7

  7. READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE % AND NO. 2 VOLTAGE %) 
    1. Turn the ignition switch to ON.
    2. Read the value displayed on the GTS.

      Powertrain > Engine > Data List 

      Tester Display
      Accelerator Position Sensor No. 1 Voltage %
      Accelerator Position Sensor No. 2 Voltage %

      OK

      GTS Display Condition Specified Condition
      Accelerator Position Sensor No. 1 Voltage % Accelerator Pedal Released → Depressed Values smoothly change following accelerator pedal operation
      Accelerator Position Sensor No. 2 Voltage %

      HINT: 

      For numerical values of Accelerator Position Sensor No. 1 Voltage % and Accelerator Position Sensor No. 2 Voltage %, refer to the Data List.

      Refer to DATA LIST / ACTIVE TEST [11/2021 - 03/2022] , or refer to DATA LIST / ACTIVE TEST [03/2022 - 03/2023] , or refer to DATA LIST / ACTIVE TEST [03/2023 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [11/2021 - ] 

    Result: 

    NG 

    REPLACE ACCELERATOR PEDAL (WITH SENSOR) ROD ASSEMBLY. Refer to  REMOVAL [11/2021 - ] 

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