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Home >> Toyota >> 2020 >> Corolla L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 29 (Engine Control System (M20A-FKS) - Circuit Tests (5 Of 6)) >> SFI System >> Drive Start Control [06/2018 - 01/2019] >> Procedure

Drive Start Control [06/2018 - 01/2019]: Procedure

WARNING: This page is about a different variant/trim than selected.
  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 

      Shift control 

      1. 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 or M) 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 or M), any forward position (D or M) to R, or N to R.
          GTY823499Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Items Controlled
        • Driving force is restricted.
      • Deactivation Conditions
        • The accelerator pedal is released.
        • The shift lever is in P or N.

      Reverse control 

      1. Activation conditions
      • The shift lever is in R.
      • The accelerator pedal is depressed excessively.
        GTY775615Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Items Controlled
        • Driving force is restricted.
      • Deactivation Conditions
        • The accelerator pedal is released.
        • The shift lever is moved to any position other than R.

      HINT: 

      • The driving force restricted level differs between pattern A, pattern B and Reverse control.
      • During reverse control or shift control, driving force is adjusted based on the road gradient.

      Result

      Result Proceed to
      Performed A
      Not performed B

    Result: 

    B 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - 01/2019] 

    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. Refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2018 - 01/2019]  , or Refer to  DIAGNOSTIC TROUBLE CODE CHART [01/2019 - 03/2019] 

    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 (NO SENSOR 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 / Transmission / Data List / NSS Sensor Speed, NO Sensor Speed and Shift Mode.

      Powertrain > Transmission > Data List 

      Tester Display
      NSS Sensor Speed
      NO Sensor Speed
      Shift Mode
    6. Read the value displayed on the Techstream.

      Standard

      Techstream Display Condition Specified Condition
      NO Sensor Speed Vehicle stopped 0 rpm
      Vehicle being driven in belt mode Equal to NSS Sensor 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.
      • Data List item [Shift Mode] displays "Gear Mode" when starting off, decelerating and reversing the vehicle, and displays "Belt Mode" except when starting off, decelerating and reversing. Read the value only when [Shift Mode] is displaying "Belt Mode".

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    INSPECT TRANSMISSION REVOLUTION SENSOR (NO) AND TRANSMISSION REVOLUTION SENSOR (NSS). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - 09/2022] 

    Result: 

    OK 

    See step  6

  6. READ VALUE USING TECHSTREAM (NT SENSOR 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 / Transmission / Data List / Engine Speed, NT Sensor Speed and Lock Up Status.

      Powertrain > Transmission > Data List 

      Tester Display
      Engine Speed
      NT Sensor Speed
      Lock Up Status
    6. Read the value displayed on the Techstream.

      Standard

      Techstream Display Condition Specified Condition
      NT Sensor Speed Vehicle stopped with shift lever in R 0 rpm
      Lock-up ON (After warming up engine) Equal to engine speed (NE)
      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 (NT). Refer to  INSPECTION [06/2018 - ] 

    Result: 

    OK 

    See step  7

  7. READ VALUE USING TECHSTREAM (LATERAL G AND FORWARD AND REARWARD G) 
    1. Connect the Techstream to the DLC3.
    2. Start the engine.
    3. Turn the Techstream on.
    4. 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
    5. 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

      Proceed to
      OK
      NG

    Result: 

    OK 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - 01/2019] 

    Result: 

    NG 

    INSPECT AIRBAG SENSOR ASSEMBLY. Refer to  TERMINALS OF ECU [06/2018 - 04/2020] 

  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 

      Shift control 

      1. 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 or M) 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 or M), any forward position (D or M) to R, or N to R.
          GTY823499Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Items Controlled
        • Driving force is restricted.
      • Deactivation Conditions
        • The accelerator pedal is released.
        • The shift lever is in P or N.

      Reverse control 

      1. Activation conditions
      • The shift lever is in R.
      • The accelerator pedal is depressed excessively.
        GTY775615Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Items Controlled
        • Driving force is restricted.
      • Deactivation Conditions
        • The accelerator pedal is released.
        • The shift lever is moved to any position other than R.

      HINT: 

      • The driving force restricted level differs between pattern A, pattern B and Reverse control.
      • During reverse control or shift control, driving force is adjusted based on the road gradient.

      Result

      Result Proceed to
      Performed A
      Not performed B

    Result: 

    A 

    SYSTEM NORMAL 

    Result: 

    B 

    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. Refer to  DIAGNOSTIC TROUBLE CODE CHART [06/2018 - 01/2019]  , or Refer to  DIAGNOSTIC TROUBLE CODE CHART [01/2019 - 03/2019] 

    Result: 

    A 

    See step  10

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

      Refer to INSPECTION [06/2018 - 09/2024]

      Result

      Result Proceed to
      Normal A
      Abnormal B

    Result: 

    B 

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY. Refer to  REMOVAL [06/2018 - 01/2019] 

    Result: 

    A 

    See step  11

  11. READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE % AND NO. 2 VOLTAGE %) 
    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 [06/2018 - 03/2019]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - 01/2019] 

    Result: 

    NG 

    REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY. Refer to  REMOVAL [06/2018 - 03/2019] 

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