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Using M.U.T.-III, perform MPI system diagnosis code (Refer to GROUP 13A - Troubleshooting, Diagnosis Function <4B1>, GROUP 13B - Troubleshooting, Diagnosis Function <6B3>).
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Q.
Is any diagnosis code stored?
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Repair the MPI system (Refer to GROUP 13A - Troubleshooting, Inspection Chart for Diagnosis Code <4B1>, GROUP 13B - Troubleshooting, Inspection Chart for Diagnosis Code <6B3>).
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Using M.U.T.-III, check the data list (Refer to data list reference table ).
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- Item 75: CANCEL switch
- Item 86: Cruise control ON/OFF switch
- Item 91: RES + switch
- Item 92: SET - switch
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Q.
Is the check result normal?
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Q.
Is the check result normal?
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Replace the cruise control switches (Refer to ).
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Q.
Is the system turned on by operating the cruise control switch?
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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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Replace the engine-ECU (Refer to GROUP 13A - Engine-ECU <4B1>, GROUP 13B - Engine-ECU <6B3>).
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