Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000026PWG
Model Year Start: 2023 Model: Corolla HV Prod Date Range: [09/2022 -           ]
Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): Drive Mode Select Switch Circuit; 2023 - 2025 MY Corolla HV [09/2022 -        ]

Drive Mode Select Switch Circuit

DESCRIPTION

When the drive mode select switch (combination switch assembly) is operated, a switch signal is sent to the hybrid vehicle control ECU and the hybrid vehicle control ECU changes the drive mode.

WIRING DIAGRAM

PROCEDURE

1.

READ VALUE USING GTS (CAN BUS CHECK)

Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): Pattern Select Switch EV Mode Circuit+

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

B

GO TO CAN COMMUNICATION SYSTEM

A

2.

CHECK DTC OUTPUT (HEALTH CHECK)

Click here 2023 - 2025 MY Corolla HV [09/2022 -        ]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for LITHIUM-ION BATTERY with PA10): Pattern Select Switch EV Mode Circuit+

Result

Proceed to

No DTCs are output

A

DTCs are output

B

B

GO TO DTC CHART

A

3.

CHECK DRIVE MODE STATUS

(a) Turn the ignition switch to ON.

(b) Operate the drive mode select switch (combination switch assembly) to change the drive mode.

(c) Check that the drive mode indicator is displayed on the multi-information display and changes according to the selected drive mode.

Result

Proceed to

The display changes according to the drive mode select switch operation

A

The display does not change according to the drive mode select switch operation

(for Push Type Switch)

B

The display does not change according to the drive mode select switch operation

(for Toggle Type Switch)

C

(d) Turn the power switch off.

A

GO TO PROBLEM SYMPTOMS TABLE

C

GO TO STEP 8

B

4.

READ VALUE USING GTS (POWERTRAIN DRIVE MODE SWITCH)

(a) Read the value displayed on the GTS.

Powertrain > Hybrid Control > Data List

Tester Display

Powertrain Drive Mode Switch

Result

Proceed to

The display changes according to the drive mode select switch operation

A

Other than above

B

(b) Turn the ignition switch off.

A

CHECK METER / GAUGE SYSTEM 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): HOW TO PROCEED WITH TROUBLESHOOTING 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): HOW TO PROCEED WITH TROUBLESHOOTING

B

5.

INSPECT DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY)

Click here 2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; HYBRID / BATTERY CONTROL: COMBINATION SWITCH: INSPECTION

NG

REPLACE COMBINATION SWITCH ASSEMBLY

OK

6.

CHECK HARNESS AND CONNECTOR (DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY) - BODY GROUND)

(a) Disconnect the drive mode select switch (combination switch assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I61-5 (E) - Body ground

Always

Below 1 Ω

(c) Reconnect the drive mode select switch (combination switch assembly) connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

7.

CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY))

(a) Disconnect the hybrid vehicle control ECU connector.

(b) Disconnect the drive mode select switch (combination switch assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I3-37 (PDRV) - I61-6 (DRV)

Always

Below 1 Ω

I3-37 (PDRV) or I61-6 (DRV) - Body ground

Always

10 kΩ or higher

(d) Reconnect the drive mode select switch (combination switch assembly) connector.

(e) Reconnect the hybrid vehicle control ECU connector.

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.

READ VALUE USING GTS (DRIVE MODE SWITCH)

(a) Read the value displayed on the GTS.

Powertrain > Hybrid Control > Data List

Tester Display

Drive Mode Switch-

Drive Mode Switch+

Result

Proceed to

The display changes according to the drive mode select switch operation

A

Other than above

B

(b) Turn the ignition switch off.

A

CHECK METER / GAUGE SYSTEM 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): HOW TO PROCEED WITH TROUBLESHOOTING 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; METER / GAUGE / DISPLAY: METER / GAUGE SYSTEM (except 12.3 Inch Display): HOW TO PROCEED WITH TROUBLESHOOTING

B

9.

INSPECT DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY)

Click here 2020 - 2025 MY Corolla Corolla HV [01/2019 -        ]; HYBRID / BATTERY CONTROL: COMBINATION SWITCH: INSPECTION

NG

REPLACE COMBINATION SWITCH ASSEMBLY

OK

10.

CHECK HARNESS AND CONNECTOR (DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY) - BODY GROUND)

(a) Disconnect the drive mode select switch (combination switch assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I61-5 (E) - Body ground

Always

Below 1 Ω

(c) Reconnect the drive mode select switch (combination switch assembly) connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

11.

CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - DRIVE MODE SELECT SWITCH (COMBINATION SWITCH ASSEMBLY))

(a) Disconnect the hybrid vehicle control ECU connector.

(b) Disconnect the drive mode select switch (combination switch assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I3-37 (DMS-) - I61-6 (E)

Always

Below 1 Ω

I3-38 (DMS+) - I61-7 (SEL)

Always

Below 1 Ω

I3-37 (DMS-) or I61-6 (E) - Body ground

Always

10 kΩ or higher

I3-38 (DMS+) or I61-7 (SEL) - Body ground

Always

10 kΩ or higher

(d) Reconnect the drive mode select switch (combination switch assembly) connector.

(e) Reconnect the hybrid vehicle control ECU connector.

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR