Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001H3KS
Model Year Start: 2019 Model: RAV4 HV Prod Date Range: [02/2019 -           ]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for AWD with NICKEL METAL HYDRIDE BATTERY): TRAIL Switch Circuit; 2019 - 2024 MY RAV4 HV [02/2019 -        ]

TRAIL Switch Circuit

DESCRIPTION

The TRAIL mode signal will be sent to the hybrid vehicle control ECU assembly when the TRAIL mode switch (integration control and panel assembly) is operated. If the specified conditions are met, the system enters TRAIL mode and the vehicle will be driven using TRAIL mode. This signal is then transmitted from the hybrid vehicle control ECU assembly via CAN to the combination meter assembly to illuminate the TRAIL indicator.

WIRING DIAGRAM

PROCEDURE

1.

READ VALUE USING TECHSTREAM (CAN BUS CHECK)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: System Select / CAN Bus Check.

CAN Bus Check

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

(e) Turn the ignition switch off.

B

GO TO CAN COMMUNICATION SYSTEM

A

2.

CHECK DTC OUTPUT (HEALTH CHECK)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: System Select / Health Check.

(e) Check for DTCs.

Result

Proceed to

No DTCs are output.

A

DTCs are output.

B

(f) Turn the ignition switch off.

B

GO TO DTC CHART
A

3.

READ VALUE USING TECHSTREAM (AUTO LSD SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Powertrain / Hybrid Control / Data List / AUTO LSD Switch.

Powertrain > Hybrid Control > Data List

Tester Display

Auto LSD Switch

(e) Read the value displayed on the Techstream.

Powertrain > Hybrid Control > Data List

Tester Display

Measurement Item

Range

Normal Condition

Auto LSD Switch

TRAIL switch (integration control and panel assembly) condition

ON or OFF

TRAIL mode switch (integration control and panel assembly) being pushed and held:

ON

TRAIL mode switch (integration control and panel assembly) not operated:

OFF

Result

Proceed to

The Techstream display changes according to the TRAIL mode switch operation.

A

The Techstream display does not change according to the TRAIL mode switch operation.

B

(f) Turn the ignition switch off.

A

GO TO PROBLEM SYMPTOMS TABLES

B

4.

INSPECT TRAIL MODE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY)

Click here 2019 - 2024 MY RAV4 HV [11/2018 -        ]; HYBRID / BATTERY CONTROL: COMBINATION SWITCH: INSPECTION

NG

REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY

OK

5.

CHECK HARNESS AND CONNECTOR (TRAIL MODE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY) - BODY GROUND)

(a) Disconnect the G32 TRAIL mode switch (integration control and panel assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G32-13 (GND) - Body ground

Always

Below 1 Ω

*a

Front view of wire harness connector

(to TRAIL Mode Switch (Integration Control and Panel Assembly))

(c) Reconnect the G32 TRAIL LSD mode switch (integration control and panel assembly) connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

6.

CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - TRAIL MODE SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY))

(a) Disconnect the A30 hybrid vehicle control ECU assembly connector.

(b) Disconnect the G32 TRAIL mode switch (integration control and panel assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A30-36 (ALSD) - G32-18 (B)

Always

Below 1 Ω

A30-36 (ALSD) or G32-18 (B) - Body ground

Always

10 kΩ or higher

*a

Front view of wire harness connector

(to Hybrid Vehicle Control ECU Assembly)

*b

Front view of wire harness connector

(to TRAIL Mode Switch (Integration Control and Panel Assembly))

(d) Reconnect the G32 TRAIL mode switch (integration control and panel assembly) connector.

(e) Reconnect the A30 hybrid vehicle control ECU assembly connector.

OK

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY 2019 MY RAV4 HV [02/2019 - 10/2019]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL 2020 MY RAV4 HV [10/2019 - 08/2020]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL 2021 MY RAV4 HV [08/2020 - 12/2021]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL 2022 MY RAV4 HV [12/2021 - 10/2022]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL 2023 MY RAV4 HV [10/2022 - 10/2023]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL 2024 MY RAV4 HV [10/2023 -        ]; HYBRID / BATTERY CONTROL: HYBRID VEHICLE CONTROL ECU: REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR