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Home >> Mitsubishi >> 2014 >> Lancer ES Sportback >> Repair and Diagnosis >> External Pages >> Different car >> Section 54 (Adaptive Cruise Control System (Acc) & Emission Control (MFI) - With Diagnostics) >> Adaptive Cruise Control (Acc) System Diagnosis >> Diagnostic Troubleshooting Strategy

Diagnostic Troubleshooting Strategy

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

Use these steps to plan your diagnostic strategy. If you follow them carefully, you will check most of the possible causes of an ACC system malfunction.

  1. Gather information from the customer.
  2. Verify that the condition described by the customer exists.
  3. Check the vehicle for any ACC system DTC. (Refer to HOW TO READ DIAGNOSTIC TROUBLE CODES ).
  4. If you can verify the condition but no ACC system DTCs are stored, the malfunction may be intermittent. (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTIONS ).
  5. If you can verify the condition but there are no ACC system DTCs, find the fault. (Refer to SYMPTOM CHART ).
  6. If there is an ACC system DTC, record the number of the code, then erase the code. (Refer to DIAGNOSTIC TROUBLESHOOTING STRATEGY Diagnostic Function - How to Erase Diagnostic Trouble Codes).
  7. Re-create the ACC system DTC stored conditions to see if the same ACC system DTC will stored again. (Refer to HOW TO READ DIAGNOSTIC TROUBLE CODES ).