No Trouble Code Quick Symptom Test
Symptom checks cannot be used properly unless driveability problem characteristic actually happens while vehicle is being tested. To reduce diagnostic time, ensure that TEST TC-1A is reviewed before attempting to diagnose a symptom.
Select symptom that most accurately describes vehicle's driveability problem and then perform test pertaining to this symptom. Perform each test in sequence until problem is found. Refer to the NO TROUBLE CODE QUICK SYMPTOM TEST MENU table.
NO TROUBLE CODE QUICK SYMPTOM TEST MENU
| Application | Test | ||
|---|---|---|---|
| Hard Start | NTC-2A , 3A-8A , 11A , 14A , 15A | ||
| Start & Stall | NTC-2A , 3A-6A , 8A, 11A , 15A | ||
| Hesitation/Sag/Stumble | (1) | ||
| Surge | NTC-2A , 3A-8A , 11A , 12A , 15A | ||
| Lack Of Power/Sluggish | NTC-2A , 3A-8A , 11A , 13A , 15A | ||
| Spark Knock/Detonation | NTC-2A , 3A-9A , 11A , 12A , 15A | ||
| Cuts Out/Misses | NTC-2A , 3A , 7A , 9A , 11A , 13A , 15A | ||
| Backfire/Pop-Back | NTC-2A , 3A , 6A , 7A , 11A , 13A , 15A | ||
| Runs Rough/Unstable/Erratic Idle | (1) | ||
| Poor Fuel Economy | (1) | ||
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