Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Transmission Control Switch Circuit

Toyota Corolla Cross (2022-2024) Service Manual / Engine & Hybrid System / Hybrid / Battery Control / Hybrid Control System / Transmission Control Switch Circuit

DESCRIPTION

When the shift lever is in S, different ranges can be chosen using the floor shift sequential gate.

WIRING DIAGRAM

Refer to the wiring diagram for the shift paddle switch circuit. (w/ Shift paddle switch)

Click here

PROCEDURE

1.

READ VALUE USING GTS (SPORTS SHIFT POSITION)

(a) Read the value displayed on the GTS.

Powertrain > Hybrid Control > Data List

Tester Display

Sports Shift Position

Result

Proceed to

The display changes according to the shift lever operation.

A

The display does not change according to the shift lever operation.

B

(b) Turn the ignition switch off.

B

GO TO STEP 4

A

2.

READ VALUE USING GTS (SPORTS SHIFT UP SIGNAL, SPORTS SHIFT DOWN SIGNAL)

(a) Read the value displayed on the GTS.

Powertrain > Hybrid Control > Data List

Tester Display

Sports Shift UP Signal

Sports Shift DOWN Signal

Result

Proceed to

The display changes according to the transmission control switch (shift lock control unit assembly) operation.

A

The display does not change according to the transmission control switch (shift lock control unit assembly) operation.

B

(b) Turn the ignition switch off.

B

GO TO STEP 7

A

3.

CHECK FOR INTERMITTENT PROBLEMS

Click here

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE MALFUNCTIONING PARTS, COMPONENT AND AREA

4.

CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)

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

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

Standard Voltage:

Tester Connection

Switch 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) Turn the ignition switch off.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

I16-2 (E) - Body ground

Ignition switch off

Below 1 Ω

(e) Reconnect the transmission control switch (shift lock control unit assembly) connector.

NG

CHECK POWER SOURCE CIRCUIT
OK

5.

INSPECT TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY)

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

(b) Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

Standard Resistance:

Tester Connection

Condition

Specified Condition

I16-4 (IG) - I16-5 (S)

Shift lever in S

Shift lever held in "+" or "-"

Below 1 Ω

I16-4 (IG) - I16-5 (S)

Shift lever in any position except S

10 kΩ or higher

I16-3 (SFTU) - I16-2 (E)

Shift lever held in "+"

Below 1 Ω

I16-3 (SFTU) - I16-2 (E)

Shift lever in S

10 kΩ or higher

I16-1 (SFTD) - I16-2 (E)

Shift lever held in "-"

Below 1 Ω

I16-1 (SFTD) - I16-2 (E)

Shift lever in S

10 kΩ or higher

*a

Component without harness connected

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

(c) Reconnect the transmission control switch (shift lock control unit assembly) connector.

NG

REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY

OK

6.

CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY))

(a) Disconnect the hybrid vehicle control ECU connector.

(b) Disconnect the spiral cable sub-assembly connector. (w/ Shift paddle switch)

(c) Turn the ignition switch to ON.

(d) Measure the voltage according to the value(s) in the table below when the shift lever is moved to each position.

Standard Voltage:

Tester Connection

Condition

Specified Condition

I249-4 (M) - Body ground

Ignition switch ON

Shift lever in S, "+" or "-"

11 to 14 V

Ignition switch ON

Except shift lever in S, "+" and "-"

Below 1 V

NOTICE:

If the ignition switch is turned ON with the hybrid vehicle control ECU connector disconnected, other DTCs will be stored. After performing the inspection, clear the DTCs.

(e) Turn the ignition switch off.

(f) Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

Standard Resistance:

Tester Connection

Condition

Specified Condition

I249-31 (SFTU) - Body ground

Shift lever held in "+"

Below 1 Ω

I249-31 (SFTU) - Body ground

Shift lever in S

10 kΩ or higher

I249-18 (SFTD) - Body ground

Shift lever held in "-"

Below 1 Ω

I249-18 (SFTD) - Body ground

Shift lever in S

10 kΩ or higher

(g) Reconnect the spiral cable sub-assembly connector. (w/ Shift paddle switch)

(h) Reconnect the hybrid vehicle control ECU connector.

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.

INSPECT TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY)

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

(b) Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

Standard Resistance:

Tester Connection

Condition

Specified Condition

I16-3 (SFTU) - I16-2 (E)

Shift lever held in "+"

Below 1 Ω

I16-3 (SFTU) - I16-2 (E)

Shift lever in S

10 kΩ or higher

I16-1 (SFTD) - I16-2 (E)

Shift lever held in "-"

Below 1 Ω

I16-1 (SFTD) - I16-2 (E)

Shift lever in S

10 kΩ or higher

*a

Component without harness connected

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

(c) Reconnect the transmission control switch (shift lock control unit assembly) connector.

NG

REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY

OK

8.

CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH (SHIFT LOCK CONTROL UNIT ASSEMBLY) - HYBRID VEHICLE CONTROL ECU)

(a) Disconnect the hybrid vehicle control ECU connector.

(b) Disconnect the spiral cable sub-assembly connector. (w/ Shift paddle switch)

(c) Measure the resistance according to the value(s) in the table below when the shift lever is moved to each position.

Standard Resistance:

Tester Connection

Condition

Specified Condition

I249-31 (SFTU) - Body ground

Shift lever held in "+"

Below 1 Ω

Shift lever in S

10 kΩ or higher

I249-18 (SFTD) - Body ground

Shift lever held in "-"

Below 1 Ω

Shift lever in S

10 kΩ or higher

(d) Reconnect the spiral cable sub-assembly connector. (w/ Shift paddle switch)

(e) Reconnect the hybrid vehicle control ECU connector.

OK

REPLACE HYBRID VEHICLE CONTROL ECU

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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