Engine Controls - Basic Testing - 2.4L: Summary

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed to appropriate TESTS W/CODES article below. If no hard codes are found in self-diagnostics, proceed to TESTS W/O CODES - 2.4L article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.

• TESTS W/CODES - OBD-I (2.4L) (for Federal emissions)
• TESTS W/CODES - OBD-II (2.4L) (for California emissions)