Engine Controls - Basic Testing - 1.8L: Summary

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, go to TESTS W/CODES - 1.8L article. If no hard codes are found in self-diagnostics, go to TESTS W/O CODES - 1.8L article for diagnosis by symptom (i.e. ROUGH IDLE, HARD START, HESITATION, etc.) or intermittent diagnostic procedures.