HYBRID CONTROL SYSTEM Pattern Select Switch EV Mode Circuit

DTC Code DTC Name
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 (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 via CAN to the combination meter assembly to illuminate the EV drive mode indicator.

WIRING DIAGRAM

C280820E27

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 TB6

Between -2 to 46°C (28.4 to 114.8°F)

Vehicle speed

(Varies depending on engine warm-up condition)

Vehicle Spd

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

Warmed-up: 55 km/h (34 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
      Tip:

      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

    for LHD:Click here

    for RHD: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. 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

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

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

      Click here

    2. C344135C04

      *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

      G191-5 (E) - G191-6 (MSW2)

      EV drive mode switch (combination switch assembly) being pushed and held

      Below 10 Ω

      EV drive mode switch (combination switch assembly) not pushed

      1 MΩ 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

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

    1. Disconnect the G191 EV drive mode switch (combination switch assembly) connector.

    2. C344134C03

      *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

      G191-6 (MSW2) - Body ground

      Always

      Below 1 Ω

    3. Reconnect the G191 EV drive mode switch (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 - EV DRIVE MODE SWITCH (COMBINATION SWITCH ASSEMBLY))

    1. Disconnect the G194 hybrid vehicle control ECU connector.

    2. Disconnect the G191 EV drive mode switch (combination switch assembly) connector.

    3. C344132C02

      *a

      Rear view of wire harness connector

      (to Hybrid Vehicle Control ECU)

      *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

      G194-15 (EVSW) - G191-5 (E)

      Always

      Below 1 Ω

      G194-15 (EVSW) or G191-5 (E) - Body ground

      Always

      10 kΩ or higher

    4. Reconnect the G191 EV drive mode switch (combination switch assembly) connector.

    5. Reconnect the G194 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