EV Drive Mode Switch Circuit: Procedure

1. Ask the customer if a buzzer sounded to indicate that the transition to EV mode was canceled and a message was displayed on the multi-information display when they pressed the pattern select switch assembly (EV mode switch).

   Result

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

   HINT: 

   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 pattern select switch assembly (EV mode switch).

B → COMPLETED 

A: Go to next step 

HINT: 

ECUs that are correctly connected to the CAN communication system can be displayed on the Techstream.

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. 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 (w/ Smart Key System).	B
   None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed (w/o Smart Key System).	C

B → See step   7 

C → See step   10 

A: Go to next step 

1. Check for DTCs of all systems by following the prompts on the Techstream screen.

   Result

   Result	Proceed to
   No DTCs are output.	A
   DTCs other than hybrid control system DTCs are output.	B

B → GO TO DTC CHART 

A: Go to next step 

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

   OK

   Tester Display	Description	Inspection Condition	Specified Condition
   Indicat. EV Mode	EV driver mode indicator light	EV DRIVE MODE	Comes on

   Result

   Result	Proceed to
   The EV mode light comes on.	A
   The EV mode light does not come on.	B

B → See step   8 

A: Go to next step 

1. Turn the ignition switch off.
2. Disconnect the pattern select switch assembly (EV mode switch) connector.
3. Measure the resistance according to the value(s) in the table below.
   Fig 1: Checking Pattern Select Switch Assembly (EV Mode Switch)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   4 (B) - 1 (E)	EV mode switch on	Below 1 Ω
   4 (B) - 1 (E)	EV mode switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Pattern Select Switch Assembly (EV Mode Switch))

NG → REPLACE PATTERN SELECT SWITCH ASSEMBLY (EV MODE SWITCH) 

OK: Go to next step 

1. Connect the pattern select switch assembly (EV mode switch) connector.
2. Disconnect connector D72 from the hybrid vehicle control ECU.
3. Measure the resistance according to the value(s) in the table below.
   Fig 2: Checking Harness And Connector (Hybrid Vehicle Control ECU - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   D72-13 (EVSW) - Body ground	EV mode switch on	Below 1 Ω
   D72-13 (EVSW) - Body ground	EV mode switch off	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *a	Rear view of wire harness connector (to Hybrid Vehicle Control ECU)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   9