The conversion capacity of the catalytic converter can be determined by an electronic control device, using a combination of a passive and an active diagnostic procedure (27, 31).

In certain embodiments, a EMR comprises at least one active diagnosis module (ADM).

In certain embodiments, a EMR comprises at least one active diagnosis module (ADM).

This can be performed using active diagnosis modules (ADMs) comprising schedules of events.

From an active diagnostic screen, tap the Back or ESC functional

Active diagnosis of current operating and potential fault conditions in the operation of the vehicle (10) is implemented using a diagnostic controller (34,36) interoperating with an on-board vehicle control system (16) as installed within a vehicle (10).