Engine Controls - Basic Testing: Summary

If no faults were found while performing BASIC TESTING , proceed to appropriate TESTS W/CODES article:

• For 2.3L, see TESTS W/CODES - TRIONIC SYSTEM .
• For 3.0L, see TESTS W/CODES - MOTRONIC 5.2 SYSTEM .

If no hard codes are found in self-diagnostics, (if vehicle has self-diagnostic system) proceed to TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.