Toyota Venza manuals

Toyota Venza: Transmission Control Switch Circuit

DESCRIPTION

When the shift lever is in S and it is moved toward "-" or "+", it is possible to select different shift ranges (1st through 6th ranges).

Moving the shift lever toward "+" increases the shift range by one, and moving the shift lever toward "-" decreases the shift range by one.

WIRING DIAGRAM


PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (BATTERY - TRANSMISSION CONTROL SWITCH)

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


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

Standard Voltage:

Tester Connection

Condition

Specified Condition

D14-6 (IG) - Body ground or other terminals

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

Text in Illustration

*1

Front view of wire harness connector

(to Transmission Control Switch)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

2.

CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - BODY GROUND)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D14-11 (E) - Body ground or other terminals

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Transmission Control Switch)



NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

3.

INSPECT SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH)

(a) Measure the resistance between each terminal of the transmission control switch when the shift lever is moved to each position.

Standard Resistance:

Tester Connection

Condition

Specified Condition

6 (IG) - 13 (S)

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

Below 1 Ω

Shift lever not in S, "+" or "-"

10 kΩ or higher

5 (SFTU) - 11 (E)

Shift lever held in "+"

(Up-shift)

Below 1 Ω

Shift lever not held in "+"

10 kΩ or higher

4 (SFTD) - 11 (E)

Shift lever held in "-"

(Down-shift)

Below 1 Ω

Shift lever not held in "-"

10 kΩ or higher

Text in Illustration

*1

Component without harness connected

(Transmission Control Switch)



NG

REPLACE SHIFT LOCK CONTROL UNIT ASSEMBLY (TRANSMISSION CONTROL SWITCH)


OK

4.

CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL SWITCH - ECM)

(a) Connect the transmission control switch connector.


(b) Disconnect the ECM connector.

(c) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

A41-25 (S) - Body ground or other terminals

  • Ignition switch ON
  • Shift lever in S, "+" or "-"

11 to 14 V

A41-25 (S) - Body ground or other terminals

  • Ignition switch ON
  • Shift lever not in S, "+" or "-"

Below 1 V

Text in Illustration

*1

Front view of wire harness connector

(to ECM)

(e) Turn the ignition switch off.

(f) Disconnect the spiral cable connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A41-38 (SFTU) - Body ground or other terminals

Shift lever held in "+"

(Up-shift)

Below 1 Ω

Shift lever not held in "+"

10 kΩ or higher

A41-27 (SFTD) - Body ground or other terminals

Shift lever held in "-"

(Down-shift)

Below 1 Ω

Shift lever not held in "-"

10 kΩ or higher


OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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