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Drive Start Control [08/2019 - ]: Procedure

  1. SYMPTOM CONFIRMATION 
    1. Interview the customer to confirm the problem.

      Result

      Result Proceed to
      Hunting A
      Hesitation/poor acceleration B

    Result: 

    B 

    See step  8

    Result: 

    A 

    See step  2

  2. PAST ACTIVATION CONFIRMATION 
    1. Check if the customer operated the vehicle in a way that would cause the drive start control to operate.

      HINT: 

      Drive Start Control Activation Conditions 

      Condition 1 (Reverse control)

      Activation conditions

      • The shift lever is in R.
      • The accelerator pedal is depressed excessively.
        GTY955343Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Engine output is restricted.

      Deactivation Conditions

      • The shift lever is moved to any position other than R.
      • The accelerator pedal is released.

      Condition 2 (Shift control a)

      Activation conditions

      • The shift lever is moved from P to any forward position (D, S or M) or R.
      • The accelerator pedal is open by approximately 1/5 or more.
        GTY955335Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Engine output is restricted.

      Deactivation Conditions

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

      Condition 3 (Shift control b)

      Activation conditions

      • The shift lever is moved from R to any forward position (D, S or M), any forward position (D, S or M) to R, or N to R.
      • The accelerator pedal is open by approximately 1/5 or more.
        GTY955347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Engine output is restricted.

      Deactivation Conditions

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

      HINT: 

      During reverse control or shift control, engine output is adjusted based on the road gradient and steering angle.

      Result

      Result Proceed to
      Performed A
      Not performed B

    Result: 

    B 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [12/2017 - ] 

    Result: 

    A 

    See step  3

  3. CHECK DTC OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: System Select / Health Check.
    5. Check the DTCs.

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    B 

    GO TO DTC CHART 

    Result: 

    A 

    See step  4

  4. READ VALUE USING TECHSTREAM (FR, FL, RR, RL WHEEL SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Start the engine.
    5. Enter the following menus: Chassis / Brake/EPB / Data List / FR Wheel Speed, FL Wheel Speed, RR Wheel Speed and RL Wheel Speed.

      Chassis > Brake/EPB > Data List 

      Tester Display
      FR Wheel Speed
      FL Wheel Speed
      RR Wheel Speed
      RL Wheel Speed
    6. Read the value displayed on the Techstream.

      Standard

      Techstream 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: 

      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  5

  5. READ VALUE USING TECHSTREAM (OUTPUT AXIS SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Start the engine.
    5. Enter the following menus: Powertrain / Engine / Data List / Output Axis Speed.

      Powertrain > Engine > Data List 

      Tester Display
      Output Axis Speed
    6. Read the value displayed on the Techstream.

      Standard

      Techstream 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 

    Result: 

    OK 

    See step  6

  6. READ VALUE USING TECHSTREAM (LATERAL G AND FORWARD AND REARWARD G) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Start the engine.
    5. Enter the following menus: Chassis / Brake/EPB / Data List / Lateral G and Forward and Rearward G.

      Chassis > Brake/EPB > Data List 

      Tester Display
      Lateral G
      Forward and Rearward G
    6. Read the value displayed on the Techstream.

      Standard

      Techstream Display Condition Specified Condition
      Lateral G
      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: 

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

      Result

      Result Proceed to
      OK A
      NG (for Optitron Meter Type) B
      NG (for TFT Meter Type) C

    Result: 

    B 

    INSPECT AIRBAG SENSOR ASSEMBLY. Refer to  TERMINALS OF ECU [08/2019 - ] 

    Result: 

    C 

    INSPECT YAW RATE SENSOR ASSEMBLY. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

    Result: 

    A 

    See step  7

  7. READ VALUE USING TECHSTREAM (STEERING ANGLE VALUE) 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Start the engine.
    5. Enter the following menus: Chassis / Brake/EPB / Data List / Steering Angle Value.

      Chassis > Brake/EPB > Data List 

      Tester Display
      Steering Angle Value
    6. Read the value displayed on the Techstream.

      Standard

      Techstream Display Condition Specified Condition
      Steering Angle Value Steering wheel turned left Value increases with steering wheel operation
      Steering wheel turned right Value decreases with steering wheel operation
      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 [12/2017 - ] 

    Result: 

    NG 

    INSPECT STEERING SENSOR. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2019 - ] 

  8. PAST ACTIVATION CONFIRMATION 
    1. Check if the customer operated the vehicle in a way that would cause the drive start control to operate.

      HINT: 

      Drive Start Control Activation Conditions 

      Condition 1 (Reverse control)

      Activation conditions

      • The shift lever is in R.
      • The accelerator pedal is depressed excessively.
        GTY955343Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Engine output is restricted.

      Deactivation Conditions

      • The shift lever is moved to any position other than R.
      • The accelerator pedal is released.

      Condition 2 (Shift control a)

      Activation conditions

      • The shift lever is moved from P to any forward position (D, S or M) or R.
      • The accelerator pedal is open by approximately 1/5 or more.
        GTY955335Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Engine output is restricted.

      Deactivation Conditions

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

      Condition 3 (Shift control b)

      Activation conditions

      • The shift lever is moved from R to any forward position (D, S or M), any forward position (D, S or M) to R, or N to R.
      • The accelerator pedal is open by approximately 1/5 or more.
        GTY955347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Engine output is restricted.

      Deactivation Conditions

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

      HINT: 

      During reverse control or shift control, engine output is adjusted based on the road gradient and steering angle.

      Result

      Result Proceed to
      Not performed A
      Performed B

      HINT: 

      If the customer operated the vehicle in a way which caused the drive start control to operate, explain the operation of the system to the customer and that the operation is not a malfunction.

    Result: 

    B 

    SYSTEM NORMAL 

    Result: 

    A 

    See step  9

  9. CHECK DTC OUTPUT 
    1. Connect the Techstream to the DLC3.
    2. Turn the engine switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: System Select / Health Check.
    5. Check the DTCs.

      Result

      Result Proceed to
      DTCs are not output A
      DTCs are output B

    Result: 

    B 

    GO TO DTC CHART 

    Result: 

    A 

    See step  10

  10. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY 
    1. Inspect the park/neutral position switch assembly.

      Result

      Result Proceed to
      Normal A
      Abnormal B

    Result: 

    B 

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY 

    Result: 

    A 

    See step  11

  11. READ VALUE USING TECHSTREAM (ACCELERATOR PEDAL POSITION SENSOR) 
    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 / Accelerator Position Sensor No. 1 Voltage % and Accelerator Position Sensor No. 2 Voltage %.

      Powertrain > Engine > Data List 

      Tester Display
      Accelerator Position Sensor No. 1 Voltage %
      Accelerator Position Sensor No. 2 Voltage %
    5. Read the value displayed on the Techstream.

      OK

      Techstream 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 [08/2019 - 07/2020] , or refer to DATA LIST / ACTIVE TEST [07/2020 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [12/2017 - ] 

    Result: 

    NG 

    REPLACE ACCELERATOR PEDAL (W/SENSOR) ROD ASSEMBLY. Refer to  REMOVAL [09/2015 - ] 

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