Quick Test: Notes

NOTE: If vehicle has an emission compliance failure symptom, go to EMISSIONS COMPLIANCE under SYMPTOMS in TROUBLE SHOOTING - NO CODES article.

Quick Test is divided into 3 specialized test procedures that are functional tests of EEC-V system. All self-tests are completely menu driven using the New Generation Star (NGS) scan tool. The following procedures must be followed in sequence to avoid misdiagnosis:

VISUAL CHECK
VEHICLE PREPARATION & EQUIPMENT HOOKUP
KEY ON ENGINE OFF (KOEO) ON-DEMAND SELF-TEST
KEY ON ENGINE RUNNING (KOER) ON-DEMAND SELF-TEST
CONTINUOUS MEMORY SELF-TEST

Complete QUICK TEST before performing any system tests. Record any DTCs retrieved. Service DTCs in the following order: KOEO DTCs, KOER DTCs, then Continuous Memory DTCs and service first DTC output. If servicing Continuous Memory DTCs, retrieve any available freeze frame data. See FREEZE FRAME DATA MODE . Disregard any identical or related Continuous Memory DTCs if previously serviced. After each service or repair procedure has been completed, always repeat QUICK TEST procedures to ensure all EEC-V systems are working properly and DTCs are no longer present.