- Yaw rate sensor (airbag ECU assembly) installed improperly
- Yaw rate sensor (airbag ECU assembly)
| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM1000000021JQ8 |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - ] |
| Title: BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster): Yaw Rate Sensor Wrong Installation (X0456); 2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ] | ||
|
Yaw Rate Sensor Wrong Installation (X0456) |
DESCRIPTION
The airbag ECU assembly has a built-in yaw rate and acceleration sensor and detects the vehicle condition.
|
Code |
Tester Display |
Measurement Item |
Trouble Area |
|---|---|---|---|
|
X0456 |
Yaw Rate Sensor Wrong Installation |
History of yaw rate sensor (airbag ECU assembly) being installed incorrectly |
|
PROCEDURE
|
1. |
CHECK FOR DTCs (HEALTH CHECK) |
(a) Perform the Health Check using the GTS.
|
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
|
Tester Display |
|---|
|
Yaw Rate Sensor Value |
|
Result |
Proceed to |
|---|---|
|
NG (The yaw rate sensor (airbag ECU assembly) output value is 0°/s when the vehicle is stationary, but the value fluctuates when turning.) |
A |
|
NG (The yaw rate sensor (airbag ECU assembly) output value is not 0°/s when the vehicle is stationary.) |
B |
|
OK |
C |
| B |
|
REPLACE AIRBAG ECU ASSEMBLY
|
| C |
|
|
|
3. |
CHECK AIRBAG ECU ASSEMBLY INSTALLATION |
(a) Check that the yaw rate and acceleration sensor (airbag ECU assembly) has been installed properly.
Click here
![2019 MY RAV4 RAV4 HV [11/2018 - 02/2019]; SUPPLEMENTAL RESTRAINT SYSTEMS: CENTER AIRBAG SENSOR ASSEMBLY: REMOVAL](/t3Portal/stylegraphics/info.gif)
OK:
The yaw rate and acceleration (airbag ECU assembly) is tightened to the specified torque.
The yaw rate and acceleration (airbag ECU assembly) is not installed in a tilted position.
| NG |
|
INSTALL AIRBAG ECU ASSEMBLY
|
|
|
4. |
CLEAR VEHICLE CONTROL HISTORY (RoB) |
(a) Using the GTS, clear the Vehicle Control History (RoB).
Chassis > Brake/EPB > Utility
|
Tester Display |
|---|
|
Vehicle Control History (RoB) |
|
|
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.
| NEXT |
|
END |
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