HYBRID CONTROL SYSTEM Pattern Select Switch EV Mode Circuit

DESCRIPTION

The EV drive mode signal will be sent to the hybrid vehicle control ECU when the EV drive mode switch (pattern select 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 via CAN to the combination meter assembly to illuminate the EV drive mode indicator.

WIRING DIAGRAM

B004OSXE03

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 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 (pattern select 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 drive mode transition availability ON or OFF In EV drive mode: ON
      EV Mode Switch EV drive mode switch (pattern select switch assembly) condition ON or OFF

      EV drive mode switch (pattern select switch assembly) being pushed and held: ON

      EV drive mode switch (pattern select switch assembly) not pushed: OFF
      Result
      Result Proceed to
      The display changes according to the EV drive mode switch (pattern select switch assembly) operation. A
      The display does not change according to the EV drive mode switch (pattern select switch assembly) operation. B

    6. Turn the power switch off.


    A

    CHECK FOR INTERMITTENT PROBLEMS Click here

    B

  5. INSPECT EV DRIVE MODE SWITCH (PATTERN SELECT SWITCH ASSEMBLY)


    1. Remove the EV drive mode switch (pattern select switch assembly).

      Click here

    2. B004PN3C29
      *A for LHD
      *B for RHD
      *a

      Component without harness connected

      (EV Drive Mode Switch (Pattern Select Switch Assembly)

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      F44-10 (S) - F44-9 (E) EV drive mode switch (pattern select switch assembly) being pushed and held Below 50 Ω
      EV drive mode switch (pattern select switch assembly) not pushed 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      F44-3 (S) - F44-9 (E) EV drive mode switch (pattern select switch assembly) being pushed and held Below 50 Ω
      EV drive mode switch (pattern select switch assembly) not pushed 10 kΩ or higher

    3. Install the EV drive mode switch (pattern select switch assembly).

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE EV DRIVE MODE SWITCH (PATTERN SELECT SWITCH ASSEMBLY) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (EV DRIVE MODE SWITCH (PATTERN SELECT SWITCH ASSEMBLY) - BODY GROUND)


    1. Disconnect the F44 EV drive mode switch (pattern select switch assembly) connector.

    2. B004OT7C02
      *a

      Front view of wire harness connector

      (to EV Drive Mode Switch (Pattern Select Switch Assembly))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F44-9 (E) - Body ground Always Below 1 Ω

    3. Reconnect the F44 EV drive mode switch (pattern select 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 - EV DRIVE MODE SWITCH (PATTERN SELECT SWITCH ASSEMBLY))


    1. Disconnect the F3 hybrid vehicle control ECU connector.

    2. Disconnect the F44 EV drive mode switch (pattern select switch assembly) connector.

    3. B004Q9LC06
      *A for LHD
      *B for RHD
      *a

      Front view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b

      Front view of wire harness connector

      (to EV Drive Mode Switch (Pattern Select Switch Assembly))

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      F3-33 (EVSW) - F44-10 (S) Always Below 1 Ω
      F3-33 (EVSW) or F44-10 (S) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      F3-33 (EVSW) - F44-3 (S) Always Below 1 Ω
      F3-33 (EVSW) or F44-3 (S) - Body ground Always 10 kΩ or higher

    4. Reconnect the F44 EV drive mode switch (pattern select switch assembly) connector.

    5. Reconnect the F3 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR