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Test NTC-1A: No Trouble Code Test Menu

Select symptom that most accurately describes vehicle's driveability problem. See NO TROUBLE CODE SYMPTOM table. Perform NTC tests that pertain to this symptom. See NO TROUBLE CODE TEST MENU table. Perform NTC test in specified sequence until driveability problem is found.

NO TROUBLE CODE SYMPTOM

Application Perform NTC Tests
Hard Start 2A  , 4A  -9A  , 12A  -13A  & 16A  -17A 
Start & Stall 2A  -3A  , 5A  -9A  & 12A 
Hesitation/Sag/Stumble 2A  -13A  & 16A  -18A 
Surge 2A  -3A  , 5A  -10A  , 12A  & 16A 
Lack Of Power/Sluggish 2A  -3A  , 5A  -10A  & 12A 
Spark Knock/Detonation 2A  -3A  , 5A  -10A  , 12A  & 16A 
Cuts Out/Misses 2A  -3A  , 5A  , 9A  -10A  & 12A 
Backfire 2A  -3A  , 5A  & 8A  -10A 
Runs Rough/Unstable Idle/Erratic Idle 2A  -13A  & 16A  -18A 
Poor Fuel Economy 2A  -13A  & 16A  -18A 
NO TROUBLE CODE TEST MENU (1)

Application Test
Checking Secondary Ignition NTC-2A 
Checking PCM Power & Ground Circuits NTC-3A 
Checking Engine Vacuum NTC-4A 
Checking Fuel Delivery/Pressure NTC-5A 
Checking ECT Sensor Calibration NTC-6A 
Checking TP Sensor Calibration NTC-7A 
Checking MAP Sensor Calibration NTC-8A 
Checking Minimum Idle Air Flow NTC-9A 
Checking HO2S Switching NTC-10A 
Checking HO2S Heater NTC-11A 
Checking IAC Motor NTC-12A 
Checking Engine Mechanical Systems NTC-13A 
Checking BTS (2)NTC-14A 
Checking Brake Switch NTC-15A 
Checking EVAP System NTC-16A 
Checking IAT Sensor NTC-17A 
Checking P/N Switch (A/T) NTC-18A 
Checking Oil Pressure Sensor (3)NTC-19A 
Checking A/C System NTC-20A 
Checking Radiator Fan Operation (4)NTC-21A 
Checking Charging System NTC-22A 
(1) Unless otherwise specified, tests apply to all bodies.
(2) This test applies to TJ, WJ and XJ bodies only.
(3) This test applies to AB, AN, BE/BR and DN bodies only.
(4) This test applies to AN, WJ and XJ bodies only.