Toyota Yaris: Vehicle Stability Control System / Yaw Rate Sensor Circuit Intermittent (C00631F,C05201F)

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / Yaw Rate Sensor Circuit Intermittent (C00631F,C05201F)

DESCRIPTION

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

The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor (airbag sensor assembly) via CAN communication.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from
C00631F	Yaw Rate Sensor Circuit Intermittent	When voltage at terminal +BS is 9.5 to 17.4 V, sensor invalid information received from yaw rate sensor is ON continuously for 10 seconds or more.	Yaw rate sensor (airbag sensor assembly)	Brake
C05201F	Multi-axis Acceleration Sensor Module "A" Circuit Intermittent	When voltage at terminal +BS is 9.5 to 17.4 V, sensor invalid information received from acceleration sensor is ON continuously for 10 seconds or more.	Acceleration sensor (airbag sensor assembly)	Brake

CAUTION / NOTICE / HINT

NOTICE:

If the yaw rate and acceleration sensor (airbag sensor assembly) was replaced or reinstalled, perform "Calibration".

Click here

PROCEDURE

CLEAR DTC

(a) Operate the GTS to clear the codes.

Chassis > Brake > Clear DTCs

(b) Press the DTC clear button.

2.	RECONFIRM DTC

(a) Start and idle the engine for 60 seconds, and then stop the engine.

(b) Operate the GTS to read the DTCs.

Chassis > Brake > Trouble Codes

Result	Proceed to
C00631F and C05201F are not output	A
C00631F or C05201F is output	B

USE SIMULATION METHOD TO CHECK

REPLACE AIRBAG SENSOR ASSEMBLY

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DESCRIPTION These DTCs are stored when the skid control ECU (brake actuator assembly) receives an internal malfunction signal from the yaw rate and acceleration sensor (airbag sensor assembly)...

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