NF-1A

Note: Perform TEST DR-1A before proceeding.

1. Check for Technical Service Bulletins and manual updates that are related to the symptoms.

2. Perform NO FAULT QUICK TEST (individual test only).

Note: These tests are grouped by PCM inputs, outputs, and non-monitored categories.

INPUTS OUTPUTS NON-MONITORED

Coolant Idle Speed Motor Secondary Ignition
TPS EGR Fuel Pressure
MAP Engine Vacuum
O2 Sensor Min. Idle Air Flow
P/N Switch Engine Mechanical

3. If you suspect any of the above items to be the cause of the driveability problem, perform the associated test(s). Otherwise perform TESTS NF-2A through NF-12A, in sequence until the problem is located.

Note: The following tests check for conditions which will cause a driveability problem but will not set a hard fault [1].

CHECKING SECONDARY IGNITION AND TIMING NF-2A
CHECKING FUEL PRESSURE NF-3A
CHECKING COOLANT AND TPS CALIBRATIONS NF-4A
CHECKING MAP SENSOR CALIBRATION NF-5A
CHECKING OXYGEN SENSOR SWITCHING NF-6A
CHECKING IDLE SPEED MOTOR OPERATION NF-7A
CHECKING PARK/NEUTRAL SWITCH (AT ONLY) NF-8A
CHECKING PCM GROUNDS NF-9A
CHECKING EGR VALVE OPERATION NF-10A
CHECKING Engine VACUUM NF-11A
CHECKING MINIMUM IDLE AIR FLOW NF-12A
CHECKING Engine Mechanical NF-13A

Remarks:

[1] Hard fault - key cycle counter is on 0.