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Using M.U.T.-III, perform MPI system diagnosis code (Refer to GROUP 13A - Troubleshooting,
Diagnosis Function).
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Q.
Is any diagnosis code set?
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Repair the MPI system (Refer to GROUP 13A - Troubleshooting, Inspection
Chart for Diagnosis Code ). Then go to Step 4.
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Using M.U.T.-III, check the data list (Refer to data list reference table ).
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- Item 04: Vehicle speed signal
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Q.
Is the check result normal?
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Replace the engine-ECU (Refer to GROUP 13A - Engine-ECU). Then go to
Step 4.
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Replace the engine-ECU (Refer to GROUP 13A - Engine-ECU). Then go to
Step 4.
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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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The procedure is complete.
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