HYBRID CONTROL SYSTEM Pattern Select Switch EV Mode Circuit

DESCRIPTION

The EV drive mode signal will be sent to the hybrid vehicle control ECU assembly when the EV drive mode switch (combination switch assembly) is operated. If the specified conditions are met, the system enters EV drive mode and the vehicle will be driven using EV drive mode. This signal is then transmitted from the hybrid vehicle control ECU assembly via CAN to the combination meter assembly to illuminate the EV drive mode indicator light.

WIRING DIAGRAM

A0021JAE13

CAUTION / NOTICE / HINT

If any of the following conditions are not met, EV drive mode may not be turned on or the mode may be canceled. (A buzzer sounds to indicate that the transition to EV drive mode is canceled.)

EV Drive Mode Entry Condition Tester Display Specified Condition
HV battery charge level State of Charge (All Bat) Approximately 50% or higher
Accelerator pedal position Accelerator Degree Below approximately 40%
Engine coolant temperature Engine Coolant Temp 0°C (32°F) or higher
HV battery temperature Temp of Batt TB1 to TB3 Between -2 to 46°C (28 to 115°F)

Vehicle speed

(Varies depending on engine warm-up condition)

 Vehicle Spd

Cold: 30 km/h (19 mph) or less

Warmed-up: 45 km/h (28 mph) or less
Win Charge Control Value Below 0 kW
Defroster - OFF
Cruise control - OFF

PROCEDURE


  1. ASK ABOUT VEHICLE CONDITION


    1. Check if a buzzer sounded and a message was displayed on the multi-information display when attempting to enter EV drive mode.

      Result
      Result Proceed to
      No buzzer sounded and no message was displayed on multi-information display. A
      A buzzer sounded and a message was displayed on multi-information display. B

      Tech Tips

      If a buzzer sounds and a message is displayed on the multi-information display, one or more of the EV drive mode entry conditions have not been met. Check that all of the EV drive mode entry conditions have been met before pressing the EV drive mode switch (combination switch assembly).


    B

    END

    A

  2. READ VALUE USING GTS (CAN BUS CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: System Select / CAN Bus Check.


      CAN Bus Check
      Result
      Result Proceed to
      All of the ECUs and sensors that are currently connected to the CAN communication system are displayed. A
      None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed. B

    4. Turn the power switch off.


    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  3. CHECK DTC OUTPUT (HEALTH CHECK)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: System Select / Health Check.

    4. Check for DTCs.

      Result
      Proceed to
      No DTCs are output.
      DTCs are output.

    5. Turn the power switch off.


    DTCs are output.

    GO TO DTC CHART

    No DTCs are output.

  4. PERFORM ACTIVE TEST USING GTS (INDICAT. EV MODE)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (READY).

    3. Enter the following menus: Body Electrical / Combination Meter / Active Test / Indicat. EV Mode.


      Body Electrical > Combination Meter > Active Test
      Tester Display
      Indicat. EV Mode

    4. Perform the "Indicat. EV Mode" Active Test.

      OK
      The EV drive mode indicator light comes on or blinks.

    5. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here

    OK

  5. READ VALUE USING GTS (EV REQUEST, EV SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / EV request, EV Switch.


      Powertrain > Hybrid Control > Data List
      Tester Display
      EV Request
      EV Switch

    4. Read the value displayed on the GTS.


      Powertrain > Hybrid Control > Data List
      Tester Display Measurement Item Range Normal Condition
      EV Request EV drive mode transition availability ON or OFF In EV drive mode: ON
      EV Switch EV drive mode switch (Combination switch assembly) condition ON or OFF EV drive mode switch (Combination switch assembly) being pushed and held: ON
      Result
      Result Proceed to
      The GTS display changes according to the EV drive mode switch (combination switch assembly) operation. A
      The GTS display does not change according to the EV drive mode Switch (combination switch assembly) operation. B

    5. Turn the power switch off.


    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

  6. INSPECT EV DRIVE MODE SWITCH (COMBINATION SWITCH ASSEMBLY)


    1. Remove the EV drive mode switch (combination switch assembly).

      Click here

    2. B003YBBC05
      *a

      Component without harness connected

      (EV Drive Mode Switch (Combination Switch Assembly))

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (S) - 16 (E) EV drive mode switch (combination switch assembly) being pushed and held Below 50 Ω
      EV drive mode switch (combination switch assembly) not pushed 10 kΩ or higher

    3. Install the EV drive mode switch (combination switch assembly).

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE EV DRIVE MODE SWITCH (COMBINATION SWITCH ASSEMBLY) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (EV DRIVE MODE SWITCH (COMBINATION SWITCH ASSEMBLY) - BODY GROUND)


    1. Disconnect the K81 EV drive mode switch (combination switch assembly) connector.

    2. A0020D4C09
      *a

      Front view of wire harness connector

      (to EV Drive Mode Switch (Combination Switch Assembly))

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K81-16 (E) - Body ground Always Below 1 Ω

    3. Reconnect the K81 EV drive mode switch (combination switch assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY- EV DRIVE MODE SWITCH (COMBINATION SWITCH ASSEMBLY))


    1. Disconnect the K142 hybrid vehicle control ECU assembly connector.

    2. Disconnect the K81 EV drive mode switch (combination switch assembly) connector.

    3. A0021VWC09
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)
      *b

      Front view of wire harness connector

      (to EV Drive Mode Switch (Combination Switch Assembly))

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      K142-15 (EVSW) - K81-2 (S) Always Below 1 Ω
      K142-15 (EVSW) or K81-2 (S) - Body ground Always 10 kΩ or higher

    4. Reconnect the K81 EV drive mode switch (combination switch assembly) connector.

    5. Reconnect the K142 hybrid vehicle control ECU assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR