Toyota Venza manuals

Toyota Venza: TRAC OFF Indicator Light Remains ON

DESCRIPTION

The skid control ECU is connected to the combination meter via CAN communication.

Pressing the VSC OFF switch turns off traction control and pressing and holding this switch turns off traction and VSC controls. If TRAC control is turned off, the TRAC OFF indicator light will come on.

WIRING DIAGRAM


PROCEDURE

1.

CHECK CAN COMMUNICATION SYSTEM

(a) Check if a CAN communication system DTC is output (See page ).


Result

Proceed to

DTC is not output

A

DTC is output

B


B

INSPECT CAN COMMUNICATION SYSTEM


A

2.

CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED

(a) Check if the skid control ECU connector is securely connected.

OK:

The connector is securely connected.


NG

CONNECT CONNECTOR TO ECU CORRECTLY


OK

3.

CHECK BATTERY

(a) Check the battery voltage.

Standard Voltage:

11 to 14 V

Result

Proceed to

OK

A

NG (for 2GR-FE)

B

NG (for 1AR-FE)

C


B

CHECK OR REPLACE CHARGING SYSTEM OR BATTERY (for 2GR-FE)


C

CHECK OR REPLACE CHARGING SYSTEM OR BATTERY (for 1AR-FE)


A

4.

READ VALUE USING TECHSTREAM (VSC OFF SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Select the Data List on the Techstream (See page ).


ABS/VSC/TRAC

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

TRAC/VSC Off Mode

VSC OFF switch / Normal, TRC OFF, Unknown or VSC OFF

Normal: Normal mode

TRC OFF: TRAC off mode

Unknown: Unspecified

VSC OFF: VSC off mode

-

(d) Using the Techstream, check the switch condition on the Techstream changes according to VSC OFF switch operation.

OK:

The Techstream display changes according to VSC OFF switch operation.


NG

GO TO STEP 6


OK

5.

INSPECT COMBINATION METER ASSEMBLY

(a) Turn the ignition switch off.

(b) Turn the ignition switch to ON and check the TRAC OFF indicator light will come on for approximately 3 seconds (initial check).

(c) Perform the Active Test of the combination meter (meter CPU) using the Techstream (See page ).


(d) Check the accessory meter.

Result

Proceed to

OK

A

NG (Initial check is normal, and the TRAC OFF indicator light does not turn on or off in accordance with the Techstream operation)

B

NG (Initial check is abnormal)

C

HINT:

If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part (See page ).



A

REPLACE BRAKE ACTUATOR ASSEMBLY


B

REPLACE COMBINATION METER ASSEMBLY


C

REPLACE ACCESSORY METER ASSEMBLY

6.

INSPECT VSC OFF SWITCH

(a) Turn the ignition switch off.


(b) Disconnect the VSC OFF switch connector.

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

6 (+) - 3 (E)

Switch is pushed in

Below 1 Ω

6 (+) - 3 (E)

Switch is not pushed in

10 kΩ or higher


NG

REPLACE VSC OFF SWITCH


OK

7.

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - VSC OFF SWITCH)

(a) Disconnect the skid control ECU connector.


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A42-17 (CSW) - D2-6 (+)

Always

Below 1 Ω

A42-17 (CSW) - Body ground

Always

10 kΩ or higher

D2-3 (E) - Body ground

Always

Below 1 Ω

Text in Illustration

*1

Front view of wire harness connector

(to Brake Actuator (Skid Control ECU))

*2

Front view of wire harness connector

(to VSC OFF Switch)

HINT:

If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step (See page ).



OK

REPLACE BRAKE ACTUATOR ASSEMBLY


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

Brake Warning Light does not Come ON
DESCRIPTION The skid control ECU is connected to the combination meter via CAN communication. WIRING DIAGRAM Refer to Brake Warning Light Remains ON (See page ). PROCEDURE 1. ...

TRAC OFF Indicator Light does not Come ON
DESCRIPTION The skid control ECU is connected to the combination meter via CAN communication. WIRING DIAGRAM Refer to TRAC OFF Indicator Light Remains ON (See page ). PROCEDURE 1. ...

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