Engine Controls - Basic Testing: Summary

If faults were not found while performing BASIC DIAGNOSTIC PROCEDURES, proceed to appropriate TESTS W/CODES article in the ENGINE PERFORMANCE section below. If no hard codes are found in self-diagnostics, or vehicle does not have a self-diagnostic system, proceed to TESTS W/O CODES article in the ENGINE PERFORMANCE section for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.

• TESTS W/CODES - 2.2L (for S10 Pickup)
• TESTS W/CODES - 4.3L (for all others)