Download The purpose of this test is to satisfy the enable criteria necessary to execute I/M readiness diagnostics for the evaporative emission (EVAP) system. The test may be used to set the I/M System Status indicators to YES. Service Bay Tests are included on the scan tool for some systems depending upon vehicle make and model. The test is designed to allow the EVAP Diagnostic Tests to run in service bay conditions. Ensure that the vehicle meets the requirements listed in Conditions for Running before performing either EVAP System Test. Failure to meet the necessary requirements may produce inaccurate test results. CONDITIONS FOR RUNNING Non Scan Tool Service Bay Test equipped vehicles ^ The barometric pressure (BARO) is more than 75 kPa. ^ The fuel level is between 15-18 percent. ^ The battery voltage is between 10-18 volts. ^ The test will initiate only after a cold start. The control module considers the engine to be cold if the following conditions are met: – The engine coolant temperature (ECT) is between 4-30°C (39-86°F). – The intake air temperature (IAT) is between 4-30°C (39-86°F). – The difference between the ECT and the IAT is less than 8°C (14°F). Scan Tool Service Bay Test equipped vehicles ^ The BARO is more than 75 kPa.