HYBRID CONTROL SYSTEM Pattern Select Switch EV Mode Circuit

DESCRIPTION

The EV mode signal will be sent to the hybrid vehicle control ECU assembly when the EV mode switch (No. 4 combination switch assembly) is operated. If the specified conditions are met, the system enters EV mode and the vehicle will be driven using EV mode. This signal is then transmitted from the hybrid vehicle control ECU assembly via CAN to the combination meter assembly to illuminate the EV mode indicator.

WIRING DIAGRAM

B000O9EE31

CAUTION / NOTICE / HINT

Depending on the condition of the hybrid control system and the driving conditions, the drive mode may not be able to be changed to EV mode and a warning message will be displayed on the multi-information display.

Tech Tips

Under the following conditions, the drive mode will not be able to be changed to EV mode:


  • The hybrid control system is extremely hot.


    • After the vehicle has been parked in an extremely hot environment, driven at high speeds or the vehicle is climbing a slope, etc.

  • The hybrid control system is extremely cold.


    • After the vehicle has been parked in an extremely cold environment (approximately 0°C or less) for a long period of time.

  • The engine is warming up.

  • The SOC (State of Charge) of the HV battery is low.


    • The HV battery SOC displayed on the hybrid system indicator display is low.

  • The vehicle is being driven at a speed higher than the specified value.


    • The vehicle speed is approximately 30 km/h or higher.

  • The accelerator pedal is being fully depressed or the vehicle is climbing a slope.

  • The defroster is on.

  • DTCs are stored.

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 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 mode entry conditions have not been met. Check that all of the EV mode entry conditions have been met before pressing the EV mode switch (No. 4 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. Turn the GTS on.

    4. 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

    5. 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. Turn the GTS on.

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

    5. Check for DTCs.

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

    6. Turn the power switch off.


    B

    GO TO DTC CHART

    A

  4. READ VALUE USING GTS (EV MODE, EV MODE SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Hybrid Control / Data List / EV Mode, EV Mode Switch.


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

    5. Read the value displayed on the GTS.


      Powertrain > Hybrid Control > Data List
      Tester Display Measurement Item Range Normal Condition
      EV Mode EV mode transition availability ON or OFF In EV mode: ON
      EV Mode Switch EV mode switch (No. 4 combination switch assembly) condition ON or OFF

      EV mode switch (No. 4 combination switch assembly) not pushed: OFF

      EV mode switch (No. 4 combination switch assembly) being pushed and held: ON
      Result
      Result Proceed to
      The display changes according to the EV mode switch (No. 4 combination switch assembly) operation. A
      The display does not change according to the EV mode switch (No. 4 combination switch assembly) operation. B

    6. Turn the power switch off.


    A

    GO TO PROBLEM SYMPTOMS TABLE Click here

    B

  5. INSPECT EV MODE SWITCH (NO. 4 COMBINATION SWITCH ASSEMBLY)


    1. Inspect the EV mode switch (No. 4 combination switch assembly).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE EV MODE SWITCH (NO. 4 COMBINATION SWITCH ASSEMBLY) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (EV MODE SWITCH (NO. 4 COMBINATION SWITCH ASSEMBLY) - BODY GROUND)


    1. Disconnect the P78 EV mode switch (No. 4 combination switch assembly) connector.

    2. B000QQDC07
      *a

      Front view of wire harness connector

      (to EV Mode Switch (No. 4 Combination Switch Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P78-5 (E) - Body ground Power switch off Below 1 Ω

    3. Reconnect the P78 EV mode switch (No. 4 combination switch assembly) connector.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - EV MODE SWITCH (NO. 4 COMBINATION SWITCH ASSEMBLY))


    1. Disconnect the P65 hybrid vehicle control ECU assembly connector.

    2. Disconnect the P78 EV mode switch (No. 4 combination switch assembly) connector.

    3. B000SP2C05
      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU Assembly)
      *b

      Front view of wire harness connector

      (to EV Mode Switch (No. 4 Combination Switch Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P65-15 (EVSW) - P78-6 (S) Power switch off Below 1 Ω
      P65-15 (EVSW) or P78-6 (S) - Body ground Power switch off 10 kΩ or higher

    4. Reconnect the P78 EV mode switch (No. 4 combination switch assembly) connector.

    5. Reconnect the P65 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