No Trouble Code Quick Symptom Test
Symptom checks cannot be used properly unless driveability problem occurs while vehicle is being driven. To reduce diagnostic time, ensure DTC TEST is reviewed before attempting to diagnosis a symptom. Select symptom which most accurately describes the driveability problem, and then perform test pertaining to the symptom. Perform each test in sequence until driveability problem is found. See NO TROUBLE CODE QUICK SYMPTOM TEST MENU table.
NO TROUBLE CODE QUICK SYMPTOM TEST MENU
| Application | Test | ||
|---|---|---|---|
| Hard Start | NTC-2A, 3A or 3D, 4A, 5A, 6A, 7A, 9A, 12A, 13A, 14A, 15A, 16A & 17A | ||
| Start & Stalls | NTC-2A, 3A or 3D, 4A, 5A, 6A, 9A, 11A & 16A | ||
| Hesitation/Sag/Stumble | (1) | ||
| Surge | NTC-2A, 3A or 3D, 4A, 5A, 6A, 7A, 9A, 11A, 12A & 16A | ||
| Lack Of Power/Sluggish | NTC-2A, 3A or 3D, 4A, 5A, 6A, 7A, 9A, 11A, 13A & 16A | ||
| Spark Knock/Detonation | NTC-2A, 3A or 3D, 4A, 5A, 6A, 7A, 9A, 11A, 12A & 17A | ||
| Cuts Out/Misses | NTC-2A, 3A or 3D, 7A, 11A, 13A & 16A | ||
| Backfire | NTC-2A, 3A or 3D, 6A, 7A, 11A, 13A & 16A | ||
| Runs Rough/Unstable Idle/Erratic Idle | (1) | ||
| Poor Fuel Economy | (1) | ||
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