Inspection/Maitenance (I/M) Complete System Set Procedure

INSPECTION/MAINTENANCE (I/M) COMPLETE SYSTEM SET PROCEDURE

DESCRIPTION
The purpose of the I/M Complete System Set Procedure is to satisfy the enable criteria necessary to execute all of the I/M readiness diagnostics, and complete the trips for those particular diagnostics. When all diagnostic tests are completed, the I/M System Status indicators are set to YES. Perform this test when more than one or all of the I/M System Status indicators are set to NO.

CONDITIONS FOR RUNNING

Cold Start
- The barometric pressure (BARO) is more than 74 kPa.
- The engine coolant temperature (ECT) is below 30°C (86°F).
- The intake air temperature (IAT) is below 30°C (86°F).
- The difference between the IAT and the ECT is 8°C (14°F) or less.
- The battery voltage is between 9-18 volts.
- The fuel level is between 15-85 percent.

TEST DESCRIPTION

Steps 1-3:

Step 4:

Steps 5-7:

The numbers below refer to the step numbers on the diagnostic table.
2. This step runs the HO2S Heater Tests and initiate the EVAP System Test.Preprogramming the scan tool will reduce the amount of time the oxygen sensor heaters operate while verifying the enable criteria.
3. This step runs the EVAP, AIR and the Oxygen Sensor Tests. The EVAP Test begins once the engine coolant reaches a calibrated temperature. The AIR Test, if equipped, begins shortly after Closed Loop and the indicated speed is achieved. The Oxygen Sensor Tests begin once the engine is at operating temperature, in Closed Loop Fuel Control, and a calibrated amount of time has elapsed.
5. This step runs the Catalyst Tests. This test runs during the idle period immediately following a cruise period that meets a minimum calibrated RPM and time period.