Engine Controls - Basic Testing - Non-Turbo: Summary

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

• For 850 Non-TLEV (A/T), see TESTS W/CODES - MOTRONIC 4.3 - NON-TURBO .
• For 850 (M/T), 850 TLEV (M/T & A/T) and 850 R, see TESTS W/CODES - MOTRONIC 4.4 - NON-TURBO .

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