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Use the 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 diagnosis code No. C1505, C1506 or C1555 set?
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This diagnosis is complete.
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Check that the column switch assembly (Integrated with steering wheel sensor) is installed correctly (Refer to GROUP 54A - Column Switch .).
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Q.
Is the check result normal?
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Install the column switch assembly (Integrated with steering wheel sensor) correctly (Refer to GROUP 54A - Column Switch ).
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With the front wheel facing in the straight-ahead direction, check the steering wheel sensor signal using the data list. Check that the data list deviates within ±5° from the neutral position (Refer to ).
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- Item No.07: Steering angle
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Q.
Is the check result normal?
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Calibrate the steering wheel sensor (Refer to ).
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Turn the steering wheel fully to the left, and then turn it fully to the right. Then check that the value of the steering wheel sensor changes smoothly using the data list. In addition, check that the steering wheel angle on the data list almost matches the actual steering wheel angle (Refer to ).
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- Item No.07: Steering angle
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Q.
Is the check result normal?
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Replace the column switch assembly (Integrated with steering wheel sensor) (Refer to GROUP 54A - Column Switch ), calibrate the steering wheel sensor (Refer to ).
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Check again if the diagnosis code is set.
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(1)Erase the set diagnosis code.
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(2)Ignition switch: "LOCK" (OFF)
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Q.
Is diagnosis code No. C1505, C1506 or C1555 set?
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Replace the hydraulic unit assembly (integrated with ASTC-ECU) (Refer to ).
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The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
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