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- ASC-ECU supplies power to the G and yaw rate sensor at the terminal No. 1.
- The G and yaw rate sensor outputs the signal to ASC-ECU via the special CAN bus
lines.
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This diagnosis code is set when the abnormality is detected by comparing the longitudinal
G-sensor value output from the G and yaw rate sensor with the value output from the wheel speed
sensor.
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- Improper installation of the G and yaw rate sensor
- G and yaw rate sensor malfunction
- Malfunction of wheel speed sensor
- ASC-ECU malfunction
- External noise interference
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Use M.U.T.-III to diagnose the CAN bus lines.
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Q.
Is the check result normal?
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Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting ).
On completion, go to Step 2.
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Q.
Is the diagnosis code No. C1242 set?
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This diagnosis is complete.
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Use the M.U.T.-III to check whether the wheel speed sensor-related diagnosis code is set
or not.
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Q.
Is the diagnosis code set?
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Troubleshoot for the relevant diagnosis code (Refer to ).
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Check that the G and yaw rate sensor is installed correctly.
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Q.
Is the check result normal?
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Reinstall the G and yaw rate sensor correctly.
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Check the following service data.
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Q.
Is the check result normal?
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Replace the G and yaw rate sensor, and then go to Step 6.
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Q.
Is the diagnosis code No. C1242 set?
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This diagnosis is complete.
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