Diagnostic Methods/Quick Tests: Overview

Quick Test is performed by retrieving Key ON Engine OFF (KOEO), Key ON Engine Running (KOER), and Continuous Memory Diagnostic Trouble Codes. However, under certain fault conditions, the vehicle may not be able to complete or initiate a part or all of Quick Test. Refer to Diagnosis By Symptom and follow the guided path for that symptom.


If any concerns arise during Quick Test, the appropriate action or direction is provided. For vehicles with no symptoms, refer to Diagnosis By Symptom / 26 - No Symptoms Present - PCM Quick Test. Testing and Inspection


When directed to perform Quick Test, refer to Diagnostic Subroutines / DSR 1. DSR1 - Vehicle Preparation