DTC Code | DTC Name |
---|---|
C1232 | Acceleration Sensor Stuck Malfunction |
C1243 | Acceleration Sensor Stuck Malfunction |
C1245 | Acceleration Sensor Output Malfunction |
DESCRIPTION
The skid control ECU receives signals from the yaw rate and acceleration sensor via the CAN communication system.
The yaw rate sensor 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 and acceleration sensor and the CAN communication system, DTCs U0123 (Lost Communication with Yaw Rate Sensor Module) and U0124 (Lost Communication with Lateral Acceleration Sensor Module) are set.
These DTCs are also output when calibration has not been completed.
DTC Code | DTC Detection Condition | Trouble Area |
---|---|---|
C1232 | At a vehicle speed of 10 km/h (6 mph) or more, acceleration sensor output value does not change for 30 seconds or more. |
|
C1243 | While the vehicle speed changes from 30 km/h (19 mph) to 0 km/h (0 mph), the condition that the value of acceleration sensor does not change by 0.0294 G or more occurs 16 times or more. |
|
C1245 | 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 sensor exceeds 0.35 G for 60 seconds or more. |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
Note
When replacing the yaw rate and acceleration sensor, perform zero point calibration Click here.
Tech Tips
When DTC U0123, U0124 and/or U0126 is output together with DTC C1232, C1243, and/or C1245, inspect and repair the trouble areas indicated by DTC U0123, U0124 and/or U0126 first Click here.
PROCEDURE
CHECK YAW RATE AND ACCELERATION SENSOR INSTALLATION
Check that the yaw rate and acceleration sensor has been installed properly Click here.
OK |
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The sensor is tightened to the specified torque. |
The sensor is not installed in a tilted position. |
Note
Check the yaw rate and acceleration sensor signal after replacement Click here.
Tech Tips
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Click here.
NG |
INSTALL YAW RATE AND ACCELERATION SENSOR CORRECTLY Click here |
OK |
REPLACE YAW RATE AND ACCELERATION SENSOR Click here