HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): Pattern Select Switch Sport Mode Circuit; 2019 - 2020 MY Avalon HV [04/2018

Last Modified: 08-21-2023	6.11:8.1.0	Doc ID: RM100000001A0GB
Model Year Start: 2019	Model: Avalon HV	Prod Date Range: [04/2018 - 08/2020]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY): Pattern Select Switch Sport Mode Circuit; 2019 - 2020 MY Avalon HV [04/2018 - 08/2020]

Pattern Select Switch Sport Mode Circuit

DESCRIPTION

When selecting sport mode, the switch operation signal is sent to the hybrid vehicle control ECU. Following this, the system enters sport mode and the vehicle will be driven using sport mode. This signal is then transmitted from the hybrid vehicle control ECU via CAN to the combination meter assembly to illuminate the "SPORT" indicator.

HINT:

If the power switch is turned off while in sport mode, the drive mode will automatically be changed to normal mode when the power switch is turned on (IG).

WIRING DIAGRAM

PROCEDURE

1.	READ VALUE USING TECHSTREAM (CAN BUS CHECK)

Click here

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

GO TO CAN COMMUNICATION SYSTEM

2.	CHECK DTC OUTPUT (HEALTH CHECK)

Click here

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

GO TO DTC CHART

3.	READ VALUE USING TECHSTREAM (SPORT MODE SWITCH, NORMAL MODE SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

Powertrain > Hybrid Control > Data List

Tester Display
Sport Mode Switch
Normal Mode Switch

(d) Read the value displayed on the Techstream.

Powertrain > Hybrid Control > Data List

Tester Display

Measurement Item

Range

Normal Condition

Sport Mode Switch

Sport mode switch condition

ON or OFF

Sport mode switch being pushed and held: ON

Sport mode switch not operated: OFF

Normal Mode Switch

Normal mode switch condition

ON or OFF

Normal mode switch being pushed and held: ON

Normal mode switch not operated: OFF

Result	Proceed to
The Techstream display changes according to the switch (Sport mode, Normal mode) operation	A
The Techstream display does not change according to the switch (Sport mode, Normal mode) operation	B

(e) Turn the power switch off.

REPLACE HYBRID VEHICLE CONTROL ECU

4.	INSPECT ELECTRIC PARKING BRAKE SWITCH ASSEMBLY (SPORT MODE, NORMAL MODE)

Click here

REPLACE ELECTRIC PARKING BRAKE SWITCH ASSEMBLY

5.	CHECK HARNESS AND CONNECTOR (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY - BODY GROUND)

(a) Disconnect the G24 electric parking brake switch assembly connector.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
G24-16 (GND1) - Body ground	Always	Below 1 Ω

*a	Front view of wire harness connector (to Electric Parking Brake Switch Assembly)

REPAIR OR REPLACE HARNESS OR CONNECTOR

6.	CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ELECTRIC PARKING BRAKE SWITCH ASSEMBLY)

(a) Disconnect the G46 and G47 hybrid vehicle control ECU connectors.

(b) Disconnect the G24 electric parking brake switch assembly connector.

Rear view of wire harness connector

(to Hybrid Vehicle Control ECU)

Front view of wire harness connector

(to Electric Parking Brake Switch Assembly)

Standard Resistance:

Tester Connection	Condition	Specified Condition
G47-6 (SPRT) - G24-12 (P)	Always	Below 1 Ω
G47-6 (SPRT) or G24-12 (P) - Body ground	Always	10 kΩ or higher
G46-10 (NORM) - G24-13 (B)	Always	Below 1 Ω
G46-10 (NORM) or G24-13 (B) - Body ground	Always	10 kΩ or higher

(d) Reconnect the G24 electric parking brake switch assembly.

(e) Reconnect the G46 and G47 hybrid vehicle control ECU connectors.

REPLACE HYBRID VEHICLE CONTROL ECU

REPAIR OR REPLACE HARNESS OR CONNECTOR