Toyota Tundra (2015 year). Manual — part 257

A

NEXT

3.

CHECK HARNESS AND CONNECTOR (ECM - BODY GROUND)

(a) for 4WD:

OK:

There is no wire harness connection (no pin).

(b) for 2WD:

There is a wire harness connection.

(2) Disconnect the ECM connector.

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

Standard Resistance:

TESTER CONNECTION

CONDITION

SPECIFIED CONDITION

A24-4 (ADJ1) - Body ground

Always

Below 1 Ω

Result

RESULT

PROCEED TO

A

B

B

GO TO STEP 6

4.

REPAIR OR REPLACE HARNESS OR CONNECTOR

(a) Repair or replace harness or connector.

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...

A

NEXT

5.

READ VALUE USING TECHSTREAM (VEHICLE SPEC SIG 1)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Enter the following menus: Powertrain / Engine and ECT / Data List.

(f) According to the display on the Techstream, use the Data List.

Engine and ECT

TESTER DISPLAY

MEASUREMENT ITEM/RANGE

NORMAL

CONDITION

DIAGNOSTIC

NOTE

Vehicle Spec Signal

1

Information indicating if vehicle is 2WD or

4WD/

ON or OFF

ON: 2WD

OFF: 4WD

-

(g) Check that the actual vehicle type and the information read from the Data List match.

Result

RESULT

PROCEED TO

Actual vehicle type and information read from Data List do not match

A

Actual vehicle type and information read from Data List match

B

B

GO TO STEP 7

6.

REPLACE ECM

(a) Replace the 1UR-FE

, 3UR-FE

or 3UR-FBE

.

7.

RECONFIRM DTC

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...

(a) Clear the DTC

.

(b) Check if the same DTC is output

.

Result

RESULT

PROCEED TO

DTC is output

A

DTC is not output

B

B

END

A

REPLACE VSC ACTUATOR ASSEMBLY

8.

RECONFIRM DTC

(a) Clear the DTC

.

(b) Check if the same DTC is output

.

Result

RESULT

PROCEED TO

DTC is output

A

DTC is not output

B

B

CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM

SIMULATION)

A

REPLACE VSC ACTUATOR ASSEMBLY

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...

Last Modified: 9-16-2014

6.6 C

Doc ID: RM000003NJL0DSX

Model Year: 2015

Model: Tundra

Prod Date Range: [08/2014 - ]

Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1439/66,C1445/66; Steering Angle Sensor

Initialization Incomplete; 2015 MY Tundra [08/2014 - ]

DTC

C1439/66 Steering Angle Sensor Initialization Incomplete

DTC

C1445/66 Vehicle Driven with Steering Angle Sensor not Initialized

DESCRIPTION

The skid control ECU acquires the steering angle sensor zero point every time the ignition switch is turned to ON

and the vehicle is driven at 40 km/h (25 mph) or more for approximately 10 seconds. The ECU also stores the

previous zero point.

The steering angle sensor zero point malfunction warning will be canceled by turning the ignition switch off.

DTC

CODE

DTC DETECTION CONDITION

TROUBLE AREA

C1439/66

After the steering angle sensor zero point calibration data is cleared

due to, for example, fluctuations in the power source, the steering

Steering angle

sensor

Yaw rate and

deceleration sensor

VSC actuator

assembly (Skid

control ECU)

C1445/66

Steering angle sensor zero point is not obtained when the vehicle is

or more without the brake pedal being depressed

Steering angle

sensor

Yaw rate and

deceleration sensor

VSC actuator

assembly (Skid

control ECU)

WIRING DIAGRAM

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...