For 1990-2009 cars

### Description

The purpose of the Inspection/Maintenance (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 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 start-up engine coolant temperature (ECT) is between 4-30°C (39-86°F).

• | The start-up intake air temperature (IAT) is between 4-30°C (39-86°F).

• | The difference between the startup IAT and the startup ECT is 8°C (14.4°F) or less.

• | The battery voltage is between 9-18 volts.

• | The fuel level is between 15-85 percent.

• | The Evaporative Emission (EVAP) System requires the above conditions along with the following:

- | Three or more drive cycles with a minimum of 17 hours between cycles

- | The estimated ambient temperature at the end of this drive cycle is between 2-32°C (36-89°F).

- | The shutdown ECT is 70°C (158°F) or higher.

- | A refueling event is not detected.

### Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. This step is to run the heated oxygen sensor (HO2S) heater diagnostics and initiate the EVAP System diagnostic.

2. This step is to run the EVAP, secondary air injection (AIR) and the oxygen sensor diagnostics. 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 diagnostics begin once the engine is at operating temperature, in Closed Loop fuel control, and a calibrated amount of time has elapsed.

3. This step is to run the Catalyst Tests. This test runs during the idle period immediately following a cruise period that meets a minimum calibrated RPM and time period.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Inspection/Maintenance (I/M) System Check? | -- | Go to Step 2 | Go to Inspection/Maintenance (I/M) System Check
2 |

Important: Whenever the ignition is turned ON, ignition positive voltage is supplied to the heated oxygen sensor (HO2S) heaters. After verifying the enable criteria, turn OFF the ignition for approximately 5 minutes to allow the sensors to cool before continuing with the test. Once the engine is started, DO NOT turn the engine OFF for the remaining portion of the set procedure.

1. Preprogram the scan tool with the vehicle information before the ignition is turned ON.
2. Ensure the vehicle is within the Conditions for Running specified in the supporting text.
3. Turn OFF all of the accessories, e.g., A/C, blower fan, etc.
4. Set the vehicle parking brake.
5. Verify the transmission is in Park for automatic transmissions and Neutral for manual transmissions.
6. Start the engine and allow the engine to idle.
7. Allow the engine to idle for the specified time.

Is the action complete?

2 minutes

Go to Step 3

--

3 | Caution: Refer to Road Test Caution in the Preface section. In order for the next group of tests to run, the vehicle must operate in the following conditions:

1. Acceleration at part throttle to 89 km/h (55 mph) with this speed maintained until the engine reaches operating temperature. This may be up to 8 minutes depending on the start up coolant temperature.
2. Continued operation under these conditions for an additional 6 minutes.

Is the action complete?

--

Go to Step 4

--

4 | Caution: Refer to Road Test Caution in the Preface section. In order for the next group of tests to run, the vehicle must operate in the following conditions:

1. Acceleration at part throttle to 72-89 km/h (45-55 mph) with this speed maintained for 2 minutes.
2. Deceleration to 0 km/h (0 mph).
3. Engine idling for 2 minutes while the following criteria is maintained:

• | The service brake is depressed.

• | The automatic transmission is in drive.

• | The manual transmission is in neutral with the clutch pedal depressed.

Is the action complete?

--

Go to Step 5

--

5 | Important: If only one test status indicates No, go to the I/M System DTC Table for the I/M System Set Procedure for the indicated system. Observe the I/M System Status display with a scan tool. Did all of the I/M System Status indicators update to YES? | -- | Go to Step 6 | Go to Diagnostic Trouble Code (DTC) List - Vehicle
6 | Observe the Emission Related DTC portion of the I/M System Status display with a scan tool. Does the scan tool indicate any Emission Related DTCs set? | -- | Go to Diagnostic Trouble Code (DTC) List - Vehicle | System OK