Service Bay Test

The EVAP service bay test is accessed with a scan tool, and allows EVAP diagnostic tests to be run at higher Engine Coolant Temperatures (ECT) than are allowed during normal testing. The EVAP service bay test allows all of the above tests to be run on demand. When the EVAP service bay tests are run, the scan tool will indicate the tests have passed, or which specific DTC has failed. If an EVAP service bay test fails, no DTCs will be recorded in the PCM Freeze Frame/Failure Records. They will only be displayed on the scan tool. The EVAP service bay test is useful in determining if a fault is present, and for verifying a repair.