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Home >> Toyota >> 2016 >> Prius Two >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System (Nickel Metal Hydride) - Diagnostic Codes (9 Of 9) & Circuit Tests >> HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY) >> Drive Start Control System [11/2015 - 12/2018] >> Procedure

Drive Start Control System [11/2015 - 12/2018]: Procedure

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

      Result

      Proceed to
      Hunting
      Hesitation/poor acceleration

    Result: 

    Hesitation/poor acceleration 

    See step  8

    Result: 

    Hunting 

    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

      • Reverse (R) is selected.
      • The accelerator pedal is depressed.
        GTY583840Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Driving torque is restricted.

      Deactivation Conditions

      • The shift state is changed to any state other than reverse (R).
      • The accelerator pedal is released.

      Condition 2 (Shift control A)

      Activation conditions

      • The shift state is changed from park (P) to any forward state (drive (D) or brake (B)).
      • The accelerator pedal is depressed approximately 1/5 or more.
        GTY589745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        1. If the shift lever is moved to attempt to change the shift state from park (P) when the accelerator pedal is depressed, the shift state will not change and drive-start control will not operate.

      Items Controlled

      • Driving torque is restricted.

      Deactivation Conditions

      • Shift state is changed to park (P) or neutral (N).
      • The accelerator pedal is released.

      Condition 3 (Shift control B)

      Activation conditions

      • The shift state is changed from reverse (R) to any forward state (drive (D) or brake (B)), any forward state (drive (D) or brake (B)) to reverse (R), or Neutral (N) to reverse (R).
      • The accelerator pedal is depressed approximately 1/5 or more.
        GTY600495Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Driving torque is restricted.

      Deactivation Conditions

      • Shift state is changed to park (P) or neutral (N).
      • The accelerator pedal is released.

      HINT: 

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

      Result

      Proceed to
      Performed
      Not performed

    Result: 

    Not performed 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [11/2015 - 11/2017]  , or refer to  PROBLEM SYMPTOMS TABLE [11/2017 - 12/2018] 

    Result: 

    Performed 

    See step  3

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

      Result

      Proceed to
      DTCs are not output
      DTC is output

    Result: 

    DTC is output 

    GO TO  DTC INDEX 

    Result: 

    DTCs are not output 

    See step  4

  4. READ VALUE USING TECHSTREAM (FR, FL, RR, RL WHEEL SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (READY).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / ABS/VSC/TRC / Data List / FR Wheel Speed, FL Wheel Speed, RR Wheel Speed and RL Wheel Speed.

      Chassis > ABS/VSC/TRC > Data List 

      Tester Display
      FR Wheel Speed
      FL Wheel Speed
      RR Wheel Speed
      RL Wheel Speed

      Chassis > ABS/VSC/TRC > Data List 

      Tester Display Measurement Item Range Normal Condition
      FR Wheel Speed Front speed sensor RH Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) When driving at constant speed: No large fluctuations
      FL Wheel Speed Front speed sensor LH Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) When driving at constant speed: No large fluctuations
      RR Wheel Speed Rear speed sensor RH Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) When driving at constant speed: No large fluctuations
      RL Wheel Speed Rear speed sensor LH Min.: 0 km/h (0 mph), Max.: 326 km/h (202 mph) When driving at constant speed: No large fluctuations
    5. 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 0 km/h (0 mph)
      Vehicle being driven at constant speed between 16 to 64 km/h (10 to 40 mph) No large fluctuations when driving at a constant speed
      WARNING:

      When performing the confirmation driving pattern, 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.

    6. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    INSPECT FRONT OR REAR SPEED SENSOR. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - 12/2018] 

    Result: 

    OK 

    See step  5

  5. READ VALUE USING TECHSTREAM (VEHICLE SPEED) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Hybrid Control / Data List / Vehicle Speed.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Vehicle Speed
    5. Read the value of "Vehicle Speed" displayed on the Techstream.

      Standard

      Inspection Condition Specified Condition
      Vehicle stopped 0 km/h (0 mph)
      Vehicle being driven at a constant speed
      (16 to 64 km/h (10 to 40 mph))      		 No large fluctuations in displayed speed
      WARNING:

      Perform this road test only in an appropriate safe location, in accordance with all local 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.

    6. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    INSPECT ELECTRONICALLY CONTROLLED BRAKE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - 12/2018] 

    Result: 

    OK 

    See step  6

  6. READ VALUE USING TECHSTREAM (DECELERATION SENSOR) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (READY).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / ABS/VSC/TRC / Data List / Deceleration Sensor and Deceleration Sensor2.

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      Deceleration Sensor
      Deceleration Sensor2
    5. Read the value displayed on the Techstream.

      Standard

      Techstream Display Condition Specified Condition
      Deceleration Sensor
      Deceleration Sensor2      		 During deceleration Value changes with vehicle speed
      During acceleration Value changes with vehicle speed
      WARNING:

      When performing the confirmation driving pattern, 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.

    6. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    INSPECT YAW RATE SENSOR. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - 12/2018] 

    Result: 

    OK 

    See step  7

  7. READ VALUE USING TECHSTREAM (STEERING ANGLE SENSOR) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (READY).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / ABS/VSC/TRC / Data List / Steering Angle Sensor.

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      Steering Angle Sensor

      Chassis > ABS/VSC/TRC > Data List 

      Tester Display Measurement Item Range Normal Condition
      Steering Angle Sensor Steering angle sensor Min.: -3276.8 degrees, Max.: 3276.7 degrees Turning left: Increases
      Turning right: Decreases
    5. Read the value displayed on the Techstream.

      Standard

      Condition Specified Condition
      Steering wheel turned left Value increases with steering wheel operation
      Steering wheel turned right Value decreases with steering wheel operation
      WARNING:

      When performing the confirmation driving pattern, 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.

    6. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [11/2015 - 11/2017]  , or refer to  PROBLEM SYMPTOMS TABLE [11/2017 - 12/2018] 

    Result: 

    NG 

    INSPECT STEERING ANGLE SENSOR. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - 12/2018] 

  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

      • Reverse (R) is selected.
      • The accelerator pedal is depressed.
        GTY607648Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Driving torque is restricted.

      Deactivation Conditions

      • The shift state is changed to any state other than reverse (R).
      • The accelerator pedal is released.

      Condition 2 (Shift control A)

      Activation conditions

      • The shift state is changed from park (P) to any forward state (drive (D) or reverse (R)).
      • The accelerator pedal is depressed approximately 1/5 or more.
        GTY589745Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Driving torque is restricted.

      Deactivation Conditions

      • Shift state is changed to park (P) or neutral (N).
      • The accelerator pedal is released.

      Condition 3 (Shift control B)

      Activation conditions

      • The shift state is changed from reverse (R) to any forward state (drive (D) or brake (B)), any forward state (drive (D) or brake (B)) to reverse (R), or neutral (N) to reverse (R).
      • The accelerator pedal is depressed approximately 1/5 or more.
        GTY600495Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Items Controlled

      • Driving torque is restricted.

      Deactivation Conditions

      • Shift state is changed to park (P) or neutral (N).
      • The accelerator pedal is released.

      HINT: 

      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

      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 (HEALTH CHECK) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power 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
      DTC is output B
    6. Turn the power switch off.

    Result: 

    B 

    GO TO  DTC INDEX 

    Result: 

    A 

    See step  10

  10. READ VALUE USING TECHSTREAM (SHIFT POSITION) 
    1. Connect the Techstream to the DLC3.
    2. Turn the power switch on (IG).
    3. Turn the Techstream on.
    4. Enter the following menus: Powertrain / Hybrid Control / Data List / Shift Position.

      Powertrain > Hybrid Control > Data List 

      Tester Display
      Shift Position

      Powertrain > Hybrid Control > Data List 

      Tester Display Measurement Item Range Normal Condition
      Shift Position Current shift state P/R/N/D/B Matches currently selected shift state:
      P, R, N, D or B
    5. Read the value displayed on the Techstream.

      OK

      Condition Specified Condition
      Select shift state Matches currently selected shift state
    6. Turn the power switch off.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    GO TO ELECTRONIC SHIFT LEVER SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - ] 

    Result: 

    OK 

    See step  11

  11. READ VALUE USING TECHSTREAM (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE %, ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE %) 

    Refer to ON-VEHICLE INSPECTION [11/2015 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

    SYSTEM NORMAL (GO TO PROBLEM SYMPTOM TABLE). Refer to  PROBLEM SYMPTOMS TABLE [11/2015 - 11/2017]  , or refer to  PROBLEM SYMPTOMS TABLE [11/2017 - 12/2018] 

    Result: 

    NG 

    REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY. Refer to  REMOVAL [11/2015 - 12/2018] 

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