The numbers below refer to the step numbers in the diagnostic procedures.

1

Make sure you perform the I/M System Check before performing this test. Failure to do so may result in difficulty updating the status to YES.

2

The AIR Tests will begin shortly after the engine goes into Closed Loop Fuel Control. A Passive Test will be performed during Open Loop operation shortly after a cold start up.

3

This step is to identify a first failure of a type "B" DTC. A DTC only appears on the I/M System Status display when it becomes a MIL illuminating DTC. This occurs on the second failure of a type "B" DTC. A first failure of a type "B" DTC will not allow the I/M System Status to update to YES. See DIAGNOSTIC AIDS .

4

This step is to help identify any unique or unusual criteria required to run the diagnostic test in the event the universal set procedure does not. See CONDITIONS FOR RUNNING .

5

The I/M System Status only reports on whether or not a diagnostic has run, not what the outcome of the test was. If any Emission Related DTC sets after the tests are complete, the DTC will require diagnosis.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Test Description