Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Malfunction in Deceleration Sensor (C1420)

DESCRIPTION

This DTC is stored when the skid control ECU (brake actuator assembly) detects an abnormality in the difference between the acceleration sensor value and the control value estimated based on the yaw rate 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.

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PROCEDURE

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

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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