- Yaw rate sensor (airbag sensor assembly) installed improperly
- Yaw rate sensor (airbag sensor assembly)
| Last Modified: 06-05-2026 | 6.11:8.1.0 | Doc ID: RM1000000025DV9 |
| Model Year Start: 2023 | Model: Corolla HV | Prod Date Range: [09/2022 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for HV Model): Yaw Rate Sensor Wrong Installation (X0456); 2023 - 2026 MY Corolla HV [09/2022 - ] | ||
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Yaw Rate Sensor Wrong Installation (X0456) |
DESCRIPTION
The airbag sensor assembly has a built-in yaw rate and acceleration sensor.
|
Code |
Tester Display |
Measurement Item |
Trouble Area |
Output ECU |
|---|---|---|---|---|
|
X0456 |
Yaw Rate Sensor Wrong Installation |
History of yaw rate sensor (airbag ECU assembly) being installed incorrectly |
|
Skid control ECU (brake actuator assembly) |
PROCEDURE
|
1. |
CHECK DTC (HEALTH CHECK) |
(a) Perform the Health Check using the GTS.
Result
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B |
|
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
|
2. |
READ VALUE USING GTS (YAW RATE SENSOR VALUE) |
(a) Check Data List item "Yaw Rate Sensor Value".
Chassis > Brake/EPB > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Yaw Rate Sensor Value |
Yaw rate sensor |
Min.: -128°/s, Max.: 127°/s |
Vehicle stopped: 0°/s Turning right: -128 to 0°/s Turning left: 0 to 127°/s |
- |
Chassis > Brake/EPB > Data List
Result
|
Result |
Proceed to |
|---|---|
|
NG (The yaw rate sensor (airbag sensor assembly) output value is 0 °/s when the vehicle is stationary, but the value fluctuates when turning.) |
A |
|
NG (The yaw rate sensor (airbag sensor assembly) output value is not 0 °/s when the vehicle is stationary.) |
B |
|
OK |
C |
| B |
|
REPLACE AIRBAG SENSOR ASSEMBLY
Click here
|
| C |
|
|
|
3. |
CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION |
(a) Check that the yaw rate and acceleration sensor (airbag sensor assembly) has been installed properly.
Click here
![2023 MY GR Corolla Corolla Corolla Hatchback Corolla HV [09/2022 - 11/2022]; SUPPLEMENTAL RESTRAINT SYSTEMS: CENTER AIRBAG SENSOR ASSEMBLY: INSTALLATION](/t3Portal/stylegraphics/info.gif)
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.
| NG |
|
INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY
Click here
|
|
|
4. |
CLEAR VEHICLE CONTROL HISTORY (RoB) |
(a) Using the GTS, clear the Vehicle Control History (RoB).
Chassis > Brake/EPB > Utility
|
|
5. |
PERFORM ZERO POINT CALIBRATION OF STEERING ANGLE SENSOR |
(a) Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.
|
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