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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 32 (Hybrid Control System (For Nickel Metal Hydride Battery) - Circuit Tests (2 Of 2)) >> HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY) >> Drive Start Control [08/2021 - ] >> Procedure

Drive Start Control [08/2021 - ]: Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus ES 300h, 2023 Lexus ES 300h, 2022 Lexus ES 300h, 2021 Lexus ES 300h, and 2020 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.
  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  7

    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 (D or S) 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 (D or S), from (D or S) or N to R.
          GTY941100Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Items Controlled
        • Hybrid system output 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.
        GTY915856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Items Controlled
        • Hybrid system output is restricted.
      • Deactivation Conditions
        • The accelerator pedal is released.
        • The shift lever is moved to any position other than R.

      HINT: 

      • The hybrid system output restricted level differs between Pattern A, Pattern B and Reverse control.
      • During Shift control or Reverse control, hybrid system output 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 - ] 

    Result: 

    A 

    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

      Result  Proceed to
      DTCs are not output  A
      DTC is 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 power switch on (READY).
    3. Turn the Techstream on.
    4. Enter the following menus: Chassis / ABS/VSC/TRAC / Data List / FR Wheel Speed, FL Wheel Speed, RR Wheel Speed and RL Wheel Speed.

      Chassis > ABS/VSC/TRAC > Data List 

      Tester Display
      FR Wheel Speed
      FL Wheel Speed
      RR Wheel Speed
      RL Wheel Speed
    5. Read the values displayed on the Techstream.

      Standard

      Condition Specified Condition
      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 [06/2018 - ] 

    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 (READY).
    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 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 [06/2018 - ] 

    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/TRAC / Data List / Deceleration Sensor, Deceleration Sensor2.

      Chassis > ABS/VSC/TRAC > Data List 

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

      Standard

      Condition Specified Condition
      During deceleration Values change 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: 

    OK 

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

    Result: 

    NG 

    INSPECT AIR BAG ECU ASSEMBLY (YAW RATE SENSOR). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ] 

  7. 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 (D or S) 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 (D or S), from (D or S) or N to R.
          GTY941100Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Items Controlled
        • Hybrid system output 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.
        GTY915856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      • Items Controlled
        • Hybrid system output is restricted.
      • Deactivation Conditions
        • The accelerator pedal is released.
        • The shift lever is moved to any position other than R.

      HINT: 

      • The hybrid system output restricted level differs between Pattern A, Pattern B and Reverse control.
      • During Shift control or Reverse control, hybrid system output is adjusted based on the road gradient.

      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  8

  8. 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 CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2021 - ] 

    Result: 

    A 

    See step  9

  9. INSPECT SHIFT LEVER POSITION SENSOR 
    1. Inspect the shift lever position sensor.

      Refer to INSPECTION [06/2018 - ]

      Result

      Result  Proceed to
      Normal A
      Abnormal B

    Result: 

    B 

    REPLACE SHIFT LEVER POSITION SENSOR. Refer to  REMOVAL [06/2018 - ] 

    Result: 

    A 

    See step  10

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

    Refer to ON-VEHICLE INSPECTION [06/2018 - ]

    Result

    Proceed to
    OK
    NG

    Result: 

    OK 

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

    Result: 

    NG 

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

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