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СИСТЕМА SFI Drive Start Control System

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DTC Code DTC Name
  Drive Start Control System
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DESCRIPTION

The drive start control is controlled by the ECM.

If the ECM determines that the shift lever and accelerator pedal are operated abnormally, driving torque is restricted and, when necessary, a warning is displayed on the combination meter assembly.

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CAUTION / NOTICE / HINT

Tip:

Even if the accelerator pedal position is maintained, the engine output may increase when driving uphill and decrease when driving downhill. This is due to the drive start control controlling the driving torque, and is not a malfunction.

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PROCEDURE


  1. Click here

    SYMPTOM CONFIRMATION


    1. Interview the customer to confirm the problem.

      Result
      Result Proceed to
      Hunting A
      Hesitation/poor acceleration B

  2. Click here

    PAST ACTIVATION CONFIRMATION


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

      Tip: Drive Start Control Activation Conditions

      Condition 1 (Reverse control)

      Activation conditions


      • The shift lever is in R.

      • A01UFGOE01

        The accelerator pedal is depressed.

      Items Controlled


      • Driving torque 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.

      • A01UDRME01

        The accelerator pedal is open by approximately 1/5 or more.

      Items Controlled


      • Driving torque 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.

      • A01UFCXE01

        The accelerator pedal is open by approximately 1/5 or more.

      Items Controlled


      • Driving torque is restricted.

      Deactivation Conditions


      • The shift lever is in P or N.

      • The accelerator pedal is released.

      Tip:

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

      Result
      Result Proceed to
      Performed A
      Not performed B

  3. Click here

    CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS 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

  4. Click here

    READ VALUE USING GTS (FR, FL, RR, RL WHEEL SPEED)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Start the engine.

    5. Enter the following menus: Chassis / ABS/VSC/TRC / Data List / FR Wheel Speed, FL Wheel Speed, RR Wheel Speed and RL Wheel Speed.


      1. Chassis > ABS/VSC/TRC > Data List
        Tester Display
        FR Wheel Speed
        FL Wheel Speed
        RR Wheel Speed
        RL Wheel Speed







    6. Read the value displayed on the GTS.

      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
      CAUTION:

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

      Tip:

      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

    • OKClick here
    • NG

      INSPECT FRONT OR REAR SPEED SENSOR

  5. Click here

    READ VALUE USING GTS (SPD (NOUT))


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Start the engine.

    5. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / SPD (NOUT).


      1. Powertrain > Engine > Data List
        Tester Display
        SPD (NOUT)




    6. Read the value displayed on the GTS.

      Standard
      GTS Display Condition Specified Condition
      SPD (NOUT) Vehicle stopped, engine running 0 rpm
      Vehicle being driven at a constant speed of approximately 60 km/h (37 mph) Approximately 2750 rpm
      CAUTION:

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

      Tip:

      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

  6. Click here

    READ VALUE USING GTS (SPD (NIN))


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Start the engine.

    5. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / SPD (NIN).


      1. Powertrain > Engine > Data List
        Tester Display
        SPD (NIN)




    6. Read the value displayed on the GTS.

      Standard
      GTS Display Condition Specified Condition
      SPD (NIN) Vehicle stopped, engine running 0 rpm
      Lock-up on Same as engine speed
      CAUTION:

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

      Tip:

      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

  7. Click here

    READ VALUE USING GTS (DECELERATION SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Start the engine.

    5. Enter the following menus: Chassis / ABS/VSC/TRC / Data List / Deceleration Sensor and Deceleration Sensor2.


      1. Chassis > ABS/VSC/TRC > Data List
        Tester Display
        Deceleration Sensor
        Deceleration Sensor2





    6. Read the value displayed on the GTS.

      Standard
      GTS Display Condition Specified Condition

      Deceleration Sensor

      Deceleration Sensor2

      		 During deceleration Value changes with vehicle speed
      During acceleration Value changes with vehicle speed
      CAUTION:

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

      Tip:

      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

  8. Click here

    READ VALUE USING GTS (STEERING ANGLE SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Start the engine.

    5. Enter the following menus: Chassis / ABS/VSC/TRC / Data List / Steering Angle Sensor.


      1. Chassis > ABS/VSC/TRC > Data List
        Tester Display
        Steering Angle Sensor




    6. Read the value displayed on the GTS.

      Standard
      GTS Display Condition Specified Condition
      Steering Angle Sensor Steering wheel turned left Value increases with steering wheel operation
      Steering wheel turned right Value decreases with steering wheel operation
      CAUTION:

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

      Tip:

      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

  9. Click here

    PAST ACTIVATION CONFIRMATION


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

      Tip: Drive Start Control Activation Conditions

      Condition 1 (Reverse control)

      Activation conditions


      • The shift lever is in R.

      • A01UFGOE01

        The accelerator pedal is depressed.

      Items Controlled


      • Driving torque 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.

      • A01UDRME01

        The accelerator pedal is open by approximately 1/5 or more.

      Items Controlled


      • Driving torque 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.

      • A01UFCXE01

        The accelerator pedal is open by approximately 1/5 or more.

      Items Controlled


      • Driving torque is restricted.

      Deactivation Conditions


      • The shift lever is in P or N.

      • The accelerator pedal is released.

      Tip:

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

      Result
      Result Proceed to
      Not performed A
      Performed B
      Tip:

      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.


  10. Click here

    CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS 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

  11. Click here

    INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Inspect the park/neutral position switch assembly.

      Click here

      Result
      Result Proceed to
      Normal A
      Abnormal B

  12. Click here

    READ VALUE USING GTS (ACCELERATOR PEDAL POSITION SENSOR)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Accel Sens. No.1 Volt % and Accel Sens. No.2 Volt %.


      1. Powertrain > Engine > Data List
        Tester Display
        Accel Sens. No.1 Volt %
        Accel Sens. No.2 Volt %





    5. Read the value displayed on the GTS.

      OK
      GTS Display Condition Specified Condition
      Accel Sens. No.1 Volt % Accelerator Pedal Released → Depressed Values smoothly change following accelerator pedal operation
      Accel Sens. No.2 Volt %
      Tip:

      For numerical values of Accel Sens. No.1 Volt % and Accel Sens. No.2 Volt %, refer to the Data List.

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      Result
      Proceed to
      OK
      NG

    • OK

      SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE)Click here

    • NG

      REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLYClick here