Quick Test Self-Test

Quick Test Self-Test is divided into two specialized tests: Key On, Engine Off, and Key On, Engine Running. The Self-Test is not a conclusive test by itself, but is used as a part of the functional Quick Test diagnostic procedure. The processor stores the Self-Test program in its permanent memory. When activated, it checks the IVSC system by testing its functional capability and verifies that various sensors and actuators are connected and operating properly. The Key O7, Engine Off and Engine Running tests are functional tests which only detect faults that are present at the time of the Self-Test.
Key On, Engine Off Test
At this time, a test of the IVSC system is conducted power applied and engine at rest. The fault must be present at the time of testing for errors to be detected in this test.
Key On, Engine Running Test
At this time, a test of the IVSC system is conducted with the engine running. The system is checked under actual operating conditions and at normal operating temperatures. The actuators are exercised and checked for corresponding results.