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Home >> Mitsubishi >> 2014 >> Lancer ES Sportback >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Continuously Variable Transaxle (CVT) Diagnosis & On-Vehicle Service - With Diagnostics - Lancer >> Diagnosis >> Diagnostic Trouble Code Procedures >> LOGIC FLOW CHARTS (Monitor Sequence-Input Rationality-High) >> Diagnostic Procedure

Diagnostic Procedure

  1. STEP 1. Using scan tool MB991958, diagnose the CAN bus lines. 

    Use scan tool MB991958 to perform the CAN bus diagnosis.

    Q: Is the check result normal? 

    1. YES:  Go to Step 2.
    2. NO:  Go to "CAN Troubleshooting."
  2. STEP 2. M.U.T.-III diagnostic trouble code 

    Check if the engine-related diagnostic trouble code is stored.

    Q: Is the check result normal? 

    1. YES:  Go to Step 3.
    2. NO:  Go to "Engine Troubleshooting."
  3. STEP 3. Symptom recheck after erasing diagnostic trouble code 

    Q: Is the check result normal? 

    1. YES:  Intermittent malfunction
    2. NO:  Replace TCM.
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