Engine Controls - Basic Testing - GS-R: Summary

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