Continuous Memory Self-Test: Description

Continuous memory self-test is a functional test of PCM performed under any condition (engine running or off) with ignition on. Unlike KOEO and KOER self-tests which can only be activated on demand, continuous monitor is always active in monitoring the system. When a fault is detected, DTC will be stored in memory. This makes it possible to diagnose intermittent faults.

There are 2 types of Continuous Memory DTCs. Emission related type DTCs will turn on the Malfunction Indicator Light (MIL) on instrument cluster. Non-emission type DTCs will never turn on MIL.