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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 ).
On completion, go to Step 2.
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Use M.U.T.-III to check that the diagnosis code is set by the ACC/FCM-ECU.
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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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Use M.U.T.-III to check that the diagnosis code is set by the ASTC-ECU.
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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 FCM system control operates normally.
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Q.
Is the check result normal?
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Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How
to Cope with Intermittent Malfunctions).
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Replace the ACC/FCM-ECU (Refer to ).
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