Toyota Tundra Service Manual: Yaw Rate Sensor Malfunction (C1436)

DESCRIPTION

This DTC is stored when the skid control ECU (brake actuator assembly) detects improper installation of the yaw rate and acceleration sensor (airbag sensor assembly) or an abnormality in the difference between the yaw rate sensor value and the control value estimated based on the acceleration sensor, steering angle sensor and speed sensor signals.

The airbag sensor assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.

CAUTION / NOTICE / HINT

NOTICE:

After replacing or reinstalling the yaw rate and acceleration sensor (airbag sensor assembly), perform system variant learning and acceleration sensor zero point calibration.

Click here

PROCEDURE

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.

(d) Check the yaw rate and acceleration sensor (airbag sensor assembly) output value displayed on the Techstream.

B

REPLACE AIRBAG SENSOR ASSEMBLY

C

USE SIMULATION METHOD TO CHECK

A

(a) Turn the ignition switch off.

(b) Drive the vehicle straight ahead at 15 km/h (9 mph) or more for at least 1 second.

(c) Check that the steering wheel is correctly centered while driving straight ahead.

HINT:

If front wheel alignment and steering are adjusted as a result of an off-center steering wheel, acquire the yaw rate and acceleration sensor zero point again after the adjustments are completed.

OK:

The steering wheel is correctly centered.

NG

ADJUST FRONT WHEEL ALIGNMENT OR STEERING

OK

(a) Check that the yaw rate and acceleration sensor (airbag sensor assembly) has been installed properly.

for Column Shift Type: Click here

for Floor Shift Type: Click here

OK:

The yaw rate and acceleration sensor (airbag sensor assembly) is tightened to the specified torque.

The yaw rate and acceleration sensor (airbag sensor assembly) is not installed in a tilted position.

OK

REPLACE AIRBAG SENSOR ASSEMBLY

NG

INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY