VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1232, C1243, C1245
| DTC Code | DTC Name |
|---|---|
| C1232 | Acceleration Sensor Stuck Malfunction |
| C1243 | Acceleration Sensor Stuck Malfunction |
| C1245 | Acceleration Sensor Output Malfunction |
DESCRIPTION
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The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor (airbag sensor assembly) via the CAN communication system.
The airbag sensor assembly has a built-in yaw rate and 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 and acceleration sensor (airbag sensor assembly) and the CAN communication system, the DTC U0124 (Lost Communication with Lateral Acceleration Sensor Module) is output.
The DTCs are also output when the calibration has not been completed.
for Optitron Meter Type:
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The skid control ECU (brake actuator assembly) receives signals from the yaw rate and acceleration sensor via the CAN communication system.
If there is trouble in the bus lines between the yaw rate and acceleration sensor and the CAN communication system, the DTC U0124 (Lost Communication with Lateral Acceleration Sensor Module) is output.
The DTCs are also output when the calibration has not been completed.
for TFT Meter Type:
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| C1232 | Acceleration Sensor Stuck Malfunction | At a vehicle speed of 10 km/h (6 mph) or more, either GL1 or GL2 (input signal) does not change for 30 seconds or more. |
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| C1243 | Acceleration Sensor Stuck Malfunction | Any of the following is detected:
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| C1245 | Acceleration Sensor Output Malfunction | At a vehicle speed of 30 km/h (19 mph) or more, the difference between the forward and backward G calculated from the acceleration sensor value and that calculated from the vehicle speed exceeds 0.35 G for 60 seconds or more. |
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CAUTION / NOTICE / HINT
Note
When replacing the yaw rate and acceleration sensor (airbag sensor assembly), perform zero point calibration and store system information (for optitron meter type).
When replacing the yaw rate and acceleration sensor, perform zero point calibration and store system information (for TFT meter type).
Tech Tips
When U0124 and/or U0126 is output together with C1232, C1243 and/or C1245, inspect and repair the trouble areas indicated by U0124 and/or U0126 first.
PROCEDURE
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CHECK VEHICLE
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Check the combination meter assembly.
Result Result Proceed to for optitron meter type A for TFT meter type B
B 
CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION Click here
A 
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CHECK AIRBAG SENSOR ASSEMBLY INSTALLATION
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Turn the engine switch off.
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Check that the airbag sensor assembly has been installed properly.
OK The sensor should be tightened to the specified torque. The sensor should not be tilted position. Tech Tips
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts.
Result Proceed to OK NG
OK 
REPLACE AIRBAG SENSOR ASSEMBLY Click here
NG
INSTALL AIRBAG SENSOR ASSEMBLY CORRECTLY Click here
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CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION
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Turn the engine switch off.
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Check that the yaw rate and acceleration sensor has been installed properly.
OK The sensor should be tightened to the specified torque. The sensor should not be tilted position. Tech Tips
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts.
Result Proceed to OK NG
OK
REPLACE YAW RATE AND ACCELERATION SENSOR Click here
NG
INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY Click here
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