Toyota Yaris: Vehicle Stability Control System / Zero Point Calibration of Steering Angle Sensor Malfunction (X20D7)
DESCRIPTION
| Code | Tester Display | Measurement Item | Trouble Area | RoB Output from |
|---|---|---|---|---|
| X20D7 | Zero Point Calibration of Steering Angle Sensor Malfunction | History of the steering angle sensor zero point calibration position differing from the stored value |
| Brake |
CAUTION / NOTICE / HINT
NOTICE:
After performing the inspection, check and clear the vehicle control history (RoB).
PROCEDURE
| 1. | CHECK FOR DTCs (HEALTH CHECK) |
(a) Using the GTS, perform the Health Check.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
| B |
 | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
| 2. | CLEAR VEHICLE CONTROL HISTORY (RoB) |
(a) Using the GTS, clear the Vehicle Control History (RoB).
Chassis > Brake > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
|
| 3. | PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR |
(a) Perform zero point calibration of the yaw rate and acceleration sensor.
Chassis > Brake > Utility| Tester Display |
|---|
| Reset Memory |
| Tester Display |
|---|
| Calibration |
|
| 4. | CHECK STEERING ANGLE SENSOR ZERO POINT CALIBRATION |
(a) Drive the vehicle straight ahead at 35 km/h (22 mph) or more for at least 5 seconds.
(b) Drive the vehicle straight ahead at 15 km/h (9 mph) or more for at least 60 seconds.
(c) Check that the centered position of the steering wheel is correctly set while driving straight ahead.
Standard:
The steering wheel is centered correctly.
| NG |
 | GO TO STEP 7 |
|
| 5. | INSPECT STEERING SYSTEM |
(a) Perform the steering system on-vehicle inspection.
Click here
| OK |
 | USE SIMULATION METHOD TO CHECK |
|
| 6. | REPAIR OR REPLACE MALFUNCTIONING PART |
| NEXT |
 | GO TO STEP 8 |
| 7. | ADJUST WHEEL ALIGNMENT |
(a) Adjust the alignment (toe) of the wheels.
for front wheel alignment: Click here
for rear wheel alignment: Click here
|
| 8. | CLEAR VEHICLE CONTROL HISTORY (RoB) |
(a) Using the GTS, clear the Vehicle Control History (RoB).
Chassis > Brake > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
|
| 9. | PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR |
(a) Perform zero point calibration of the yaw rate and acceleration sensor.
Chassis > Brake > Utility| Tester Display |
|---|
| Reset Memory |
| Tester Display |
|---|
| Calibration |
|
| 10. | 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.
(b) Drive the vehicle straight ahead at 15 km/h (9 mph) or more for at least 60 seconds.
|
| 11. | CHECK VEHICLE CONTROL HISTORY (RoB) |
(a) Perform a road test under the same malfunction conditions recreated based on the Freeze Frame Data or customer problem analysis.
(b) Using the GTS, check for Vehicle Control History (RoB).
Chassis > Brake > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
| Result | Proceed to |
|---|---|
| Vehicle Control History (RoB) is not output | A |
| Vehicle Control History (RoB) is output | B |
| A |
 | END |
| B |
 | GO TO VEHICLE CONTROL HISTORY |
Zero Point Calibration of Yaw Rate Sensor Undone (X204C)
DESCRIPTION Code Tester Display Measurement Item Trouble Area RoB Output from X204C Zero Point Calibration of Yaw Rate Sensor Undone History of incomplete yaw rate sensor zero point calibration
Sensor installation
Yaw rate and acceleration sensor (airbag sensor assembly)
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Other information:
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Refueling
Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.
To open the fuel-filler lid, pull the remote fuel-filler lid release.
