Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Quick Test: Notes
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
- KOEO ON-DEMAND SELF-TEST
- 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 under ADDITIONAL SYSTEM FUNCTIONS in appropriate SELF-DIAGNOSTICS article under ENGINE PERFORMANCE. 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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.