DESCRIPTION
INSPECTION PROCEDURE
CHECK DTC (CAN COMMUNICATION SYSTEM)
PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR
PERFORM TEST MODE (SIGNAL CHECK)
CHECK YAW RATE SENSOR ASSEMBLY INSTALLATION
READ VALUE USING GTS (YAW RATE AND ACCELERATION SENSOR)
DTC C1210 Zero Point Calibration of Yaw Rate Sensor Undone
DTC C1336 Zero Point Calibration of Acceleration Sensor Undone
DESCRIPTION
The skid control ECU (master cylinder solenoid) receives signals from the yaw rate sensor assembly via the CAN communication system.
The yaw rate sensor assembly has a built-in acceleration sensor and detects the vehicle's condition using 2 circuits (GL1, GL2). If there is trouble in the bus lines between the yaw rate sensor assembly and the CAN communication system, DTCs U0123 (yaw rate sensor communication trouble) and U0124 (acceleration sensor communication trouble) are stored.
The DTCs are also stored when the calibration has not been completed.
| DTC Code | DTC Detection Condition | Trouble Area |
| C1210 | Zero point calibration of the yaw rate sensor is incomplete. | Zero point calibration incomplete
Sensor installation
Yaw rate sensor assembly
Skid control ECU (Master cylinder solenoid)
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| C1336 | Zero point calibration of the acceleration sensor is incomplete. |
INSPECTION PROCEDURE
After replacing the master cylinder solenoid, perform zero point calibration and store the system information ().
After replacing the yaw rate sensor assembly, perform zero point calibration ().
| 1.CHECK DTC (CAN COMMUNICATION SYSTEM) |
Check for DTCs ().
Result| Result | Proceed to |
| CAN DTC is not output | A |
| CAN DTC is output (for LHD) | B |
| CAN DTC is output (for RHD) | C |
| | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| 2.PERFORM ZERO POINT CALIBRATION OF YAW RATE AND ACCELERATION SENSOR |
Perform zero point calibration of the yaw rate and acceleration sensor ().
| 3.PERFORM TEST MODE (SIGNAL CHECK) |
Turn the ignition switch off.
Perform the signal check in the Test Mode Procedure ().
- OK:
- All test mode DTCs are cleared.
| 4.CHECK YAW RATE SENSOR ASSEMBLY INSTALLATION |
Turn the ignition switch off.
Check that the yaw rate sensor assembly has been installed properly ().
- OK:
- The sensor is tightened to the specified torque.
- The sensor is not installed at an angle.
| | INSTALL YAW RATE SENSOR ASSEMBLY CORRECTLY ()
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| 5.READ VALUE USING GTS (YAW RATE AND ACCELERATION SENSOR) |
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Enter the following menus: Chassis / ABS/VSC/TRC / Data List.
ABS/VSC/TRC| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
| Deceleration Sensor |
Acceleration sensor reading/ Min.: -18.525 m/s2, Max.: 18.387 m/s2 | - |
Changes continuously during acceleration/deceleration. |
| Deceleration Sensor2 |
Acceleration sensor 2 reading/ Min.: -18.525 m/s2, Max.: 18.387 m/s2 | - |
Changes continuously during acceleration/deceleration. |
| Yaw Rate Sensor |
Yaw rate sensor/ Min.: -128°/s, Max.: 127°/s |
Vehicle stationary: 0°/s
Right turn: -128 to 0°/s
Left turn: 0 to 127°/s | - |
Check that the yaw rate and acceleration sensor output value is displayed on the GTS.
- OK:
- The yaw rate and acceleration sensor output value is normal.
Result| Result | Proceed to |
| NG | A |
| OK (for LHD) | B |
| OK (for RHD) | C |
| | REPLACE MASTER CYLINDER SOLENOID ()
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| | REPLACE MASTER CYLINDER SOLENOID ()
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| A | |
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| REPLACE YAW RATE SENSOR ASSEMBLY ()
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