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 |
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PROCEDURE
1. | CHECK FOR DTCs (HEALTH CHECK) |
(a) Perform the Health Check using the Techstream.
Result | Proceed to |
---|---|
DTCs are not output | A |
DTCs are output | B |
B | GO TO DIAGNOSTIC TROUBLE CODE CHART |
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2. | READ VALUE USING TECHSTREAM (YAW RATE SENSOR VALUE) |
(a) Check Data List item "yaw rate sensor value".
Chassis > Brake > 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 | - |
Tester Display |
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Yaw Rate Sensor Value |
Result | Proceed to |
---|---|
NG (The yaw rate and acceleration 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 and acceleration sensor (airbag ECU assembly) output value is not 0°/s when the vehicle is stationary.) | B |
OK | C |
B | REPLACE AIRBAG ECU ASSEMBLY |
C | USE SIMULATION METHOD TO CHECK |
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3. | CHECK AIRBAG ECU ASSEMBLY INSTALLATION |
(a) Check that the yaw rate and acceleration sensor (airbag ECU assembly) has been installed properly.
Click here
OK:
The yaw rate and acceleration sensor (airbag ECU assembly) is tightened to the specified torque.
The yaw rate and acceleration sensor (airbag ECU assembly) is not installed in a tilted position.
NG | INSTALL AIRBAG ECU ASSEMBLY |
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4. | CLEAR VEHICLE CONTROL HISTORY |
(a) Using the Techstream, clear the Vehicle Control History.
Chassis > Brake > Utility Tester Display |
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Vehicle Control History (RoB) |
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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 |