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Drive Start Control [09/2024 - ]: Procedure

WARNING: This page is about a different car, the 2025 Toyota GR Corolla, 2024 Toyota GR Corolla, and 2023 Toyota GR Corolla. However, it is still accessible from the selected car via links, so may be relevant.
  1. PAST ACTIVATION CONFIRMATION 
    1. Check if the customer operated the vehicle in a way that would cause the drive start control to operate.

      Activation conditions

      • 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 lever is moved from P to any forward position D (Including other forward shift positions) 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 (Including other forward shift positions), any forward position D (Including other forward shift positions) to R, or N to R.

      HINT: 

      Depending on the situation, the shift position may not be changed.

      GTY1200667Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Engine output is restricted.

      Deactivation Conditions

      • The accelerator pedal is released.
      • The shift lever is in P or N.

      HINT: 

      • The engine output restricted level differs between pattern A and pattern B.
      • During sudden start restraint control, engine output is adjusted based on the road gradient.
      • Drive start control is not activated when TRAC is turned off.

        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
        • When multi-terrain select is selected
        • When crawl control is on

      Result

      Result Proceed to
      Not performed A
      Performed B

    Result: 

    B 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE) 

    Refer to PROBLEM SYMPTOMS TABLE [09/2024 - ]

    Result: 

    A 

    See step  2

  2. CHECK DTC OUTPUT (HEALTH CHECK) 
    1. Perform the Health Check using the GTS.
    2. Check 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  5

    Result: 

    C 

    GO TO DTC CHART 

    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

      Condition Specified Condition
      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: 

      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 FRONT OR REAR SPEED SENSOR 

    Result: 

    OK 

    See step  4

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

      Chassis > Brake/EPB > Data List 

      Tester Display
      Lateral G
      Forward and Rearward G

      Standard

      Condition Specified Condition
      During deceleration Changes continuously
      During acceleration Changes continuously
      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: 

    OK 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE) 

    Refer to PROBLEM SYMPTOMS TABLE [09/2024 - ]

    Result: 

    NG 

    INSPECT AIR BAG ECU ASSEMBLY 

    Refer to TERMINALS OF ECU [11/2022 - ]

  5. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

    Refer to INSPECTION [09/2024 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    NG 

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

    Refer to REMOVAL [09/2024 - ]

    Result: 

    OK 

    See step  6

  6. 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 %

      Standard

      Condition Specified Condition
      Accelerator Pedal Released → Depressed Changes continuously

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE) 

    Refer to PROBLEM SYMPTOMS TABLE [09/2024 - ]

    Result: 

    NG 

    REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY 

    Refer to REMOVAL [09/2022 - ]

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