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Use M.U.T.-III to perform the CAN bus diagnosis.
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Q.
Is the check result normal?
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Repair the CAN bus lines (Refer to GROUP 54C -
Troubleshooting). After
repairing the CAN bus line, go to Step 2.
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Q.
Is diagnosis code No.C123C set?
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This diagnosis is complete.
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Check the ASC diagnosis code. (Refer to GROUP 35C -
Diagnosis, Diagnosis Code
Chart ).
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Q.
Is the check result normal?
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Perform the relevant troubleshooting.
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Check if the wheel speed sensor-related, or steering wheel sensor-related diagnosis code
is set.
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Q.
Is the diagnosis code set?
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|
Perform the relevant troubleshooting.
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Check that the hydraulic unit (integrated with G and yaw rate sensor) is installed correctly
(Refer to GROUP 35C -
Hydraulic Unit (integrated with G and yaw rate sensor)).
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Q.
Is the check result normal?
|
|
Reinstall the hydraulic unit (integrated with G and yaw rate sensor) correctly,
and then carry out the calibration of the G and yaw rate sensor to make ASC-ECU learn the neutral
point. Then go to Step 6.
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|
Check the following data list (Refer to ).
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- Item No.22: Yaw rate sensor
- Item No.23: Lateral G sensor
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|
Q.
Is the check result normal?
|
|
Replace the hydraulic unit (integrated with G and yaw rate sensor), and then carry
out the calibration of the G and yaw rate sensor to make ASC-ECU learn the neutral point. Then
go to Step 11.
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|
|
|
Check that the steering wheel sensor is installed correctly (Refer to GROUP 35C -
Steering
Wheel Sensor).
|
|
Q.
Is the check result normal?
|
|
Install the steering wheel sensor correctly. Then go to Step 8.
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|
|
|
Q.
Is the check result normal?
|
|
After checking the wheel alignment, calibrate the steering wheel sensor (Refer
to GROUP 35C -
On-vehicle Service), and reset the steering wheel sensor correction
amount set in the AWC-ECU (Refer to ). Then go to Step 9.
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|
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|
After adjusting the wheel alignment, calibrate the steering wheel sensor (Refer
to GROUP 35C -
On-vehicle Service), and reset the steering wheel sensor correction
amount set in the AWC-ECU (Refer to ). Then go to Step 9.
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|
|
|
Check the following data list (Refer to ).
|
|
- Item No.8: Steering angle sensor
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|
Q.
Is the check result normal?
|
|
Replace the steering wheel sensor (Refer to GROUP 35C -
Steering Wheel
Sensor). Then go to Step 10.
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|
|
|
Q.
Is diagnosis code No.C123C set?
|
|
Replace the AWC-ECU (Refer to ). Then go to Step
11.
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|
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|
Intermittent malfunction (Refer to GROUP 00 -
How to Cope with Intermittent
Malfunction).
|
|
|
|
Q.
Is diagnosis code No.C123C set?
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|
This diagnosis is complete.
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