Toyota Corolla Cross: Zero Point Calibration of Yaw Rate Sensor Undone (X204C)
DESCRIPTION
The airbag ECU assembly has a built-in yaw rate and acceleration sensor.
|
Code |
Tester Display |
Measurement Item |
Trouble Area |
Output ECU |
|---|---|---|---|---|
|
X204C |
Zero Point Calibration of Yaw Rate Sensor Undone |
History of incomplete yaw rate sensor zero point calibration |
|
Skid control ECU (brake actuator assembly) |
PROCEDURE
|
1. |
CHECK DTC (HEALTH CHECK) |
(a) Perform the Health Check using the GTS.
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B | .gif)
|
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
.gif)
|
2. |
CLEAR ZERO POINT VALUE FOR YAW RATE AND ACCELERATION SENSOR |
(a) Clear the zero point value for the yaw rate and acceleration sensor.
Click here .gif)
|
Tester Display |
|---|
|
Reset Memory |
|
|
3. |
PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR |
(a) Perform zero point calibration of the yaw rate and acceleration sensor.
Click here
|
Tester Display |
|---|
|
Calibration |
|
|
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. |
CHECK VEHICLE CONTROL HISTORY (RoB) |
(a) Based on the Freeze Frame Data and interview with the customer, attempt to reproduce the conditions when the malfunction occurred.
(b) Using the GTS, check for Vehicle Control History (RoB).
Chassis > Brake/EPB > Utility|
Tester Display |
|---|
|
Vehicle Control History (RoB) |
|
Result |
Proceed to |
|---|---|
|
X204C is not output |
A |
|
X204C is output |
B |
| A |
|
END |
|
|
6. |
CHECK AIRBAG ECU ASSEMBLY INSTALLATION |
(a) Turn the ignition switch off.
(b) 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 CORRECTLY |
|
|
7. |
READ VALUE USING GTS (LATERAL G, FORWARD AND REARWARD G AND YAW RATE SENSOR VALUE) |
(a) Check the yaw rate and acceleration sensor output value displayed on the GTS.
Chassis > Brake/EPB > Data List|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
Lateral G |
Lateral G |
Min.: -25.105 m/s2, Max.: 24.908 m/s2 |
Turning right: -25.105 to 0.000 m/s2 Turning left: 0.000 to 24.908 m/s2 |
During turning: Changes in proportion with lateral acceleration |
|
Forward and Rearward G |
Forward and rearward G |
Min.: -25.105 m/s2, Max.: 24.908 m/s2 |
During deceleration: -25.105 to 0.000 m/s2 During acceleration: 0.000 to 24.908 m/s2 |
During acceleration/deceleration: Changes in proportion with acceleration |
|
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 |
|---|
|
Lateral G |
|
Forward and Rearward G |
|
Yaw Rate Sensor Value |
OK:
The yaw rate and acceleration sensor (airbag ECU assembly) output value is normal.
| OK |
|
REPLACE BRAKE ACTUATOR ASSEMBLY |
| NG |
|
REPLACE AIRBAG ECU ASSEMBLY |
READ NEXT:
Zero Point Calibration of Steering Angle Sensor Initialization Malfunction (X208A)
DESCRIPTION
Code
Tester Display
Measurement Item
Trouble Area
Output ECU
X208A
Zero Point Calibration of Steering An
TRAC does not Operate
DESCRIPTION
When TRAC or VSC is operating, the skid control ECU (brake actuator
assembly) blinks the slip indicator light to inform the driver that slippage occurred.
When in VSC off mode, or TRAC
Excessive Brake Pedal Travel (No Fluid Leaks and No Air in System)
DESCRIPTION
Depending on the malfunction, the skid control ECU prohibits
operation of the electronically controlled brake system to protect components and
prevent incorrect operation when DTCs ar
SEE MORE:
Hybrid/EV Battery Current Sensor for Driving Control Circuit Short to Ground (P1C9F11,P1C9F15)
DESCRIPTION Refer to the description for DTC P0ABF11.
Click here
DTC No. Detection Item
DTC Detection Condition
Trouble Area MIL
Warning Indicate Note
P1C9F11 Hybrid/EV Battery Current Sensor for Driving Control Circuit Short to Ground
"Hybrid/EV
Hybrid/EV Battery Stack 1 Delta SOC High (Extreme) (P1A8100,P1A8600)
DESCRIPTION The HV battery is composed of 60 cells (3.7 V each) in series. The battery ECU assembly monitors the difference in capacity of each HV battery cell to detect malfunctions of the HV battery.
DTC No. Detection Item
DTC Detection Condition
Trouble Area MIL
Warni
