HYBRID CONTROL SYSTEM > Pattern Select Switch EV Mode Circuit

for Preparation Click here


DESCRIPTION

The EV mode signal is sent to the power management control ECU (HV CPU). This signal is then transmitted from the power management control ECU (HV CPU) via CAN to the combination meter assembly to illuminate the EV indicator lamp.

WIRING DIAGRAM


A248769E04


INSPECTION PROCEDURE

If any of the following conditions are not met, EV mode may not be turned on or the mode may be cancelled. (A buzzer sounds to indicate that the transition to EV mode is cancelled and a message is displayed on multi-information display.)

EV 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 30%
Engine coolant temperature
Engine Coolant Temp
0°C (32°F) or higher
HV battery temperature
Temp of Batt TB1 to TB3
Between 10 to 40°C (50 to 104°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)
Win
Charge Control Value
Below -20 kW
Wout
Discharge Control Value
20 kW or higher
Defroster
-
OFF
Cruise control
-
OFF
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

HINT:
If a buzzer sounds and a message is displayed on 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.



B
COMPLETED
A


2.READ VALUE USING INTELLIGENT TESTER (CAN BUS CHECK)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: System Select / 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

  1. Turn the power switch off.



B
GO TO CAN COMMUNICATION SYSTEM (Click here)
A


3.CHECK DTC OUTPUT (ALL CODES)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

  1. Enter the following menus: System Select / Utility / All Codes.

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

  1. Turn the power switch off.



B
GO TO DTC CHART
A


4.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (INDICAT. EV MODE)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (READY).

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

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

    OK:
    The EV mode indicator lamp comes on or blinks.

  1. Turn the power switch off.



NG
REPLACE COMBINATION METER ASSEMBLY (Click here)
OK


5.READ VALUE USING INTELLIGENT TESTER (EV REQUEST, EV SWITCH)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the power switch on (IG).

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

  1. Read the value displayed on the intelligent tester.

    Tester Display
    		Measurement Item/Range
    		Normal Condition
    EV request
    		EV mode transition availability/
    ON or OFF
    		In EV mode: ON
    EV Switch
    		EV mode switch condition/
    ON or OFF
    		EV switch being pushed and held: ON

    Result:
    Result
    		Proceed to
    The intelligent tester display changes according to the EV mode switch operation.
    		A
    The intelligent tester display does not change according to the EV mode switch operation.
    		B

  1. Turn the power switch off.



B
Go to step 6
A

CHECK FOR INTERMITTENT PROBLEMS (Click here)  

6.CHECK COMBINATION SWITCH ASSEMBLY (EV MODE SWITCH)

  1. Remove the combination switch assembly.



    A237666E04

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H72-3 (S) - H72-14 (E)
    		EV switch being pushed and held
    		Below 1 Ω
    EV switch not pushed
    		10 kΩ or higher

Text in Illustration 
*a
Component without harness connected
(Combination Switch Assembly)

  1. Install the combination switch assembly.



NG
REPLACE COMBINATION SWITCH ASSEMBLY (EV MODE SWITCH) (Click here)
OK


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

  1. Disconnect connector H72 from the combination switch assembly.



    A237667E02

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H72-14 (E) - Body ground
    		Always
    		Below 1 Ω

Text in Illustration 
*a
Front view of wire harness connector
(to Combination Switch Assembly)

  1. Connect the combination switch assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


8.CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - COMBINATION SWITCH ASSEMBLY)

  1. Disconnect connector H3 from the power management control ECU.

  1. Disconnect connector H72 from the combination switch assembly.



    A248766E02

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    H3-13 (EVSW) - H72-3 (S)
    		Always
    		Below 1 Ω
    H3-13 (EVSW) or H72-3 (S) - Body ground
    		Always
    		10 kΩ or higher

Text in Illustration 
*a
Rear view of wire harness connector
(to Power Management Control ECU)
*b
Front view of wire harness connector
(to Combination Switch Assembly)

  1. Connect the combination switch assembly connector.

  1. Connect the power management control ECU connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE POWER MANAGEMENT CONTROL ECU (Click here)