SFI SYSTEM Drive Start Control System

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.

A01VZZHE01

CAUTION / NOTICE / HINT

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.

PROCEDURE


  1. SYMPTOM CONFIRMATION


    1. Interview the customer to confirm the problem.

      Result
      Result Proceed to
      Hunting A
      Hesitation/poor acceleration B

    B

    PAST ACTIVATION CONFIRMATION Click here

    A

  2. PAST ACTIVATION CONFIRMATION


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

      Tech Tips

      Drive Start Control Activation Conditions

      Condition 1 (Reverse control)

      Activation conditions


      • The shift lever is in R.

      • The accelerator pedal is depressed.

        A01W3NSE01

      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.

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

        A01W3F5E01

      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.

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

        A01W202E01

      Items Controlled


      • Driving torque is restricted.

      Deactivation Conditions


      • The shift lever is in P or N.

      • The accelerator pedal is released.

      Tech Tips

      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

    B

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE) Click here

    A

  3. 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

    B

    GO TO DTC CHART

    A

  4. 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.

    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.

      Tech Tips

      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

    NG

    INSPECT FRONT OR REAR SPEED SENSOR

    OK

  5. READ VALUE USING GTS (SPD (NO))


    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 / Data List / All Data / SPD (NO).

    6. Read the value displayed on the GTS.

      Standard
      GTS Display Condition Specified Condition
      SPD (NO) 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

      CAUTION:

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

      Tech Tips

      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

    NG

    INSPECT TRANSMISSION REVOLUTION SENSOR Click here

    OK

  6. 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.

    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.

      Tech Tips

      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

    NG

    INSPECT AIRBAG ECU ASSEMBLY Click here

    OK

  7. 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.

    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.

      Tech Tips

      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

    OK

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE) Click here

    NG

    INSPECT STEERING ANGLE SENSOR Click here

  8. PAST ACTIVATION CONFIRMATION


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

      Tech Tips

      Drive Start Control Activation Conditions

      Condition 1 (Reverse control)

      Activation conditions


      • The shift lever is in R.

      • The accelerator pedal is depressed.

        A01W3NSE01

      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.

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

        A01W3F5E01

      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.

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

        A01W202E01

      Items Controlled


      • Driving torque is restricted

      Deactivation Conditions


      • The shift lever is in P or N.

      • The accelerator pedal is released.

      Tech Tips

      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

      Tech Tips

      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.


    B

    SYSTEM NORMAL

    A

  9. 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

    B

    GO TO DTC CHART

    A

  10. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Inspect the park/neutral position switch assembly.

      Click here

      Result
      Result Proceed to
      Normal A
      Abnormal B

    B

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    A

  11. 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 / Data List / All Data / Accel Sens. No.1 Volt % and 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 %

      Tech Tips

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

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE) Click here

    NG

    REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY Click here