Engine Controls - Tests W/Codes - 4.0L: Summary
If no hard failure DTCs are present, driveability symptoms exist or intermittent DTCs exist, proceed to NO TROUBLE CODES (NTC) TESTS, or TESTS W/O CODES article for diagnosis by symptom.
If no hard failure DTCs are present, driveability symptoms exist or intermittent DTCs exist, proceed to NO TROUBLE CODES (NTC) TESTS, or TESTS W/O CODES article for diagnosis by symptom.