Last Modified: 07-31-2024 6.11:8.1.0 Doc ID: RM100000001GYT2
Model Year Start: 2020 Model: Corolla Hatchback Prod Date Range: [01/2019 - 11/2022]
Title: K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: Pattern Select Switch Sport Mode Circuit; 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]

Pattern Select Switch Sport Mode Circuit

DESCRIPTION

The ECM memory contains programs for normal and sport shift patterns.

By following the programs corresponding to signals from the SPORT switch (combination switch assembly), park/neutral position switch assembly and various other sensors, the ECM switches the shift solenoid valves on and off, and controls the gear ratio.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Perform initialization when parts related to the continuously variable transaxle system are replaced.

Click here 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]; K313 (CVT): CONTINUOUSLY VARIABLE TRANSAXLE SYSTEM: INITIALIZATION

PROCEDURE

1.

READ VALUE USING TECHSTREAM (PATTERN SWITCH (PWR/M))

(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 / Engine and ECT / Data List.

(e) According to the display on the Techstream, read the Data List.

Powertrain > Engine and ECT > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Pattern Switch (PWR/M)

SPORT mode switch status

OFF or ON

  • OFF: SPORT mode off
  • ON: SPORT mode on

-

Result

Proceed to

Data List value is normal

A

Data List value is not normal

B

B

GO TO STEP 3

A

2.

REPLACE ECM

(a) Replace the ECM.

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): ECM: COMPONENTS

NEXT

PERFORM INITIALIZATION

3.

INSPECT COMBINATION SWITCH ASSEMBLY (SPORT SWITCH)

(a) Remove the combination switch assembly.

Click here 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]; K313 (CVT): PATTERN SELECT SWITCH: REMOVAL

*a

Component without harness connected

(Combination Switch Assembly (SPORT Switch))

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

6 (MSW1) - 5 (E)

SPORT switch (combination switch assembly) being pushed

Below 50 Ω

6 (MSW1) - 5 (E)

SPORT switch (combination switch assembly) not being pushed

10 kΩ or higher

(c) Install the combination switch assembly.

Click here 2020 - 2023 MY Corolla Corolla Hatchback [01/2019 - 11/2022]; K313 (CVT): PATTERN SELECT SWITCH: INSTALLATION

NG

REPLACE COMBINATION SWITCH ASSEMBLY

OK

4.

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

(a) Disconnect the I61 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) Connect the I61 combination switch assembly connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (COMBINATION SWITCH ASSEMBLY - BODY GROUND)

OK

5.

CHECK HARNESS AND CONNECTOR (COMBINATION SWITCH ASSEMBLY - ECM)

(a) Disconnect the A46 ECM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A46-57 (PWMS) - Body ground

SPORT switch (combination switch assembly) being pushed

Below 50 Ω

A46-57 (PWMS) - Body ground

SPORT switch (combination switch assembly) not being pushed

10 kΩ or higher

(c) Connect the A46 ECM connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (PATTERN SELECT SWITCH ASSEMBLY - ECM)

OK

6.

REPLACE ECM

(a) Replace the ECM.

Click here 2020 - 2023 MY Corolla [01/2019 - 11/2022]; 2ZR-FAE (ENGINE CONTROL): ECM: COMPONENTS

NEXT

PERFORM INITIALIZATION