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- Use M.U.T.-III to perform CAN bus line diagnosis.
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Q.
Is the check result normal?
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Repair CAN bus line (Refer to GROUP 54C - Troubleshooting - CAN Bus Diagnostics Table ). After repairing CAN bus line, go to Step 5.
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- Confirm the diagnosis code is set from the ACC/FCM-ECU.
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Q.
Is diagnosis code set?
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Perform troubleshooting of the adaptive cruise control system (ACC) (Refer to Troubleshooting - Diagnosis Code Chart ).
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Using M.U.T.-III, perform MPI system diagnosis code (Refer to GROUP 13C - Troubleshooting, Diagnosis Function ).
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Q.
Is any diagnosis code set?
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Repair the MPI system (Refer to GROUP 13C - Troubleshooting, Inspection Chart for Diagnosis Code ). Then go to Step 5.
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(1)Use the M.U.T.-III, erase the diagnosis code of the cruise control system.
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(2)Turn the ignition switch to the "ON" position, and press the ACC ON/OFF switch to turn the cruise control system to ON (the cruise control display screen is turned on).
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(3)After turning the cruise control system to ON, when 2 minutes or more has elapsed without operating the cruise control switches, read the diagnosis code of the cruise control system (Refer to ).
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Q.
Is diagnosis code No. P1566 set?
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Replace the engine-ECU (Refer to GROUP 13C - Engine-ECU ). Then go to Step 5.
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It can be assumed that this malfunction is intermittent (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points, How to Cope with Intermittent Malfunction ).
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(1)Use the M.U.T.-III, erase the diagnosis code of the cruise control system.
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(2)Turn the ignition switch to the "ON" position, and press the ACC ON/OFF switch to turn the cruise control system to ON (the cruise control display screen is turned on).
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(3)After turning the cruise control system to ON, when 2 minutes or more has elapsed without operating the cruise control switches, read the diagnosis code of the cruise control system (Refer to ).
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Q.
Is diagnosis code No. P1566 set?
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This procedure is complete.
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