Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Transmission Control Switch Circuit

Toyota Corolla Cross (2022-2024) Service Manual / Drivetrain / K120f (cvt) / Continuously Variable Transaxle System / Transmission Control Switch Circuit

DESCRIPTION

After moving the shift lever to M, it is possible to change the shift range between M1 and M10 using the shift lever. Moving the shift lever to "+" once raises the shift range by one, and moving the shift lever to "-" lowers the shift range by one.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Perform registration and/or initialization when parts related to the continuously variable transaxle system are replaced.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

CHECK DTC OUTPUT

(a) Enter the following menus:

Powertrain > Transmission > Trouble Codes

(b) Read the DTCs using the GTS.

Result

Proceed to

DTCs are not output

A

DTCs are output

B
B

GO TO DTC CHART
A

2.

READ VALUE USING GTS (SHIFT SW STATUS (S RANGE))

(a) Enter the following menus:

(b) According to the display on the GTS, read the Data List.

Powertrain > Transmission > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Shift SW Status (S Range)

Transmission control switch status

ON or OFF
  • ON: Shift lever in M, "+" or "-"
  • OFF: Shift lever not in M, "+" or "-"

-
Powertrain > Transmission > Data List

Tester Display

Shift SW Status (S Range)

Result

Proceed to

Data List value is normal

A

Data List value is not normal

B
B

GO TO STEP 8

A

3.

READ VALUE USING GTS (SPORT SHIFT UP SW AND SPORT SHIFT DOWN SW)

(a) Enter the following menus:

(b) According to the display on the GTS, read the Data List.

Powertrain > Transmission > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Sport Shift Up SW

Sport shift up switch status

ON or OFF
  • ON: Shift lever held in "+"
  • OFF: Shift lever not held in "+"

-

Sport Shift Down SW

Sport shift down switch status

ON or OFF
  • Shift lever held in "-"
  • OFF: Shift lever not held in "-"

-
Powertrain > Transmission > Data List

Tester Display

Sport Shift Up SW

Sport Shift Down SW

Result

Proceed to

Data List values are normal

A

Data List values are not normal

B
A

CHECK FOR INTERMITTENT PROBLEMS

Click here

Click here

B

4.

INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH)

(a) Disconnect the shift lock control unit assembly connector.

*a

Component without harness connected

(Shift Lock Control Unit Assembly (Transmission Control Switch))

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

3 (SFTU) - 2 (E)

Shift lever held in "+"

Below 1 Ω

3 (SFTU) - 2 (E)

Shift lever in M

10 kΩ or higher

1 (SFTD) - 2 (E)

Shift lever held in "-"

Below 1 Ω

1 (SFTD) - 2 (E)

Shift lever in M

10 kΩ or higher

(c) Connect the shift lock control unit assembly connector.

NG

REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY

OK

5.

CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY - BODY GROUND)

(a) Disconnect the I16 shift lock control unit assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I16-2 (E) - Body ground

Always

Below 1 Ω

(c) Connect the I16 shift lock control unit assembly connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY - BODY GROUND)
OK

6.

CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY - TCM)

(a) Disconnect the C80 TCM connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

C80-28 (SFTU) - Body ground

Shift lever held in "+"

Below 1 Ω

C80-28 (SFTU) - Body ground

Shift lever in M

10 kΩ or higher

C80-27 (SFTD) - Body ground

Shift lever held in "-"

Below 1 Ω

C80-27 (SFTD) - Body ground

Shift lever in M

10 kΩ or higher

(c) Connect the C80 TCM connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY - TCM)
OK

7.

REPLACE TCM

Click here

NEXT

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here

for Initialization: Click here

8.

INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH)

(a) Disconnect the shift lock control unit assembly connector.

*a

Component without harness connected

(Shift Lock Control Unit Assembly (Transmission Control Switch))

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

4 (IG) - 5 (S)

Shift lever in M

Below 1 Ω

4 (IG) - 5 (S)

Shift lever not in M

10 kΩ or higher

(c) Connect the shift lock control unit assembly connector.

NG

REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY

OK

9.

INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (POWER SOURCE)

*a

Front view of wire harness connector

(to Shift Lock Control Unit Assembly (Transmission Control Switch))

(a) Disconnect the I16 shift lock control unit assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

I16-4 (IG) - Body ground

Ignition switch ON

11 to 14 V

I16-4 (IG) - Body ground

Ignition switch off

Below 1 V

(c) Connect the I16 shift lock control unit assembly connector.

NG

CHECK POWER SOURCE CIRCUIT (SHIFT LOCK CONTROL UNIT ASSEMBLY)
OK

10.

CHECK HARNESS AND CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY - TCM)

(a) Disconnect the C80 TCM connector.

(b) Disconnect the I16 shift lock control unit assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I16-5 (S) - C80-14 (S)

Always

Below 1 Ω

I16-5 (S) or C80-14 (S) - Body ground and other terminals

Always

10 kΩ or higher

(d) Connect the C80 TCM connector.

(e) Connect the I16 shift lock control unit assembly connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (SHIFT LOCK CONTROL UNIT ASSEMBLY - TCM)
OK

11.

REPLACE TCM

Click here

NEXT

PERFORM REGISTRATION AND INITIALIZATION

for Registration: Click here

for Initialization: Click here

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