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).

4. If there are no clear suspected items, NO FAULT COMPLETE TEST (TESTS NF-2A through NF-13A), 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 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.