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Using M.U.T.-III, perform CAN bus diagnosis (Refer to GROUP 54C - Explanation About The M.U.T.-III Can Bus Diagnostics ).
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Q.
Is the check result satisfactory?
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Repair the CAN bus lines (Refer to GROUP 54C - Troubleshooting, Can Bus Diagnostic Table ). Then go to Step 7.
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Using M.U.T.-III, perform ASTC system diagnosis code.
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Q.
Is any diagnosis code set?
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Repair the ASTC system (Refer to GROUP 35C - Troubleshooting, Diagnosis Code Chart ). Then go to Step 7.
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Using M.U.T.-III, perform A/T system diagnosis code (Refer to GROUP 23A - Troubleshooting, Diagnosis Function ).
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Q.
Is any diagnosis code set?
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Repair the A/T system (Refer to GROUP 23A - Troubleshooting, Diagnosis Code Chart ). Then go to Step 7.
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Using M.U.T.-III, perform MPI system diagnosis code (Refer to GROUP 13B - Troubleshooting, Diagnosis Function ).
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Q.
Is any diagnosis code set?
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Repair the MPI system (Refer to GROUP 13B - Troubleshooting, Inspection Chart for Diagnosis Code ). Then go to Step 7.
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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 13B - Engine-ECU ). Then go to Step 7.
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Replace the engine-ECU (Refer to GROUP 13B - Engine-ECU ). Then go to Step 7.
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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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