Description
The purpose of the inspection and 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 drive cycles for those particular diagnostics. When all diagnostic tests are completed, the I/M System Status indicators are set to YES. Perform this procedure 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 startup engine coolant temperature (ECT) is between 4-30°C (39-86°F). |
| • | The startup 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 fuel level does not increase more than 9 percent during this drive cycle. |
| • | The engine run time is at least 10 minutes. |
| • | The vehicle has been driven at least 5 km (3.15 miles) this drive cycle. |
| • | The estimated ambient temperature at the end of this drive cycle is between 2-32°C (36-89°F). |
| • | The shutdown ECT is at least 70°C (158°F). |
| • | The ignition is turned OFF for at least one hour after this drive cycle. |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
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This step is to run the heated oxygen sensor (HO2S) heater diagnostics and initiate the evaporative emission (EVAP) system diagnostic.
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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.
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This step is to run the catalyst diagnostics and the engine off natural vacuum (EONV) portion of the EVAP diagnostics. The Catalyst diagnostics run during the idle period immediately following a cruise period that meets a minimum calibrated RPM and time period. The EONV portion of the EVAP diagnostics runs with the engine OFF.
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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.
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Inspection/Maintenance (I/M) System Check? | -- | Go to Step 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. Is the action complete? | 2 minutes | Go to Step 3 | -- | |||||
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Caution: Refer to Road Test Caution in the Preface section.
Is the action complete? | -- | Go to Step 4 | -- | |||||
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Caution: Refer to Road Test Caution in the Preface section.
Is the action complete? | -- | Go to Step 5 | -- | |||||
5 | 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 the I/M System Set Procedure for the systems that have not updated to YES | ||||
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 in Vehicle DTC Information | System OK |
