Launch CRP 129 Premium (LA07005) [12/50] Obd ii readiness monitors

LAUNCH Creader Professional CRP12X Series User's Manual

on-board computer. The DLC is usually located 12 inches from the center of the

instrument panel (dash), under or around the driver’s side for most vehicles. If

Data Link Connector is not located under dashboard, a label should be there

telling location. For some Asian and European vehicles, the DLC is located

behind the ashtray and the ashtray must be removed to access the connector. If

the DLC cannot be found, refer to the vehicle’s service manual for the location.

Figure 2-2

2.4 OBD II Readiness Monitors

An important part of a vehicle’s OBD II system is the Readiness Monitors, which

are indicators used to find out if all of the emissions components have been

evaluated by the OBD II system. They are running periodic tests on specific

systems and components to ensure that they are performing within allowable

limits.

Currently, there are eleven OBD II Readiness Monitors (or I/M Monitors) dened

by the U.S. Environmental Protection Agency (EPA). Not all monitors are

supported in every vehicles and the exact number of monitors in any vehicle

depends on the motor vehicle manufacturer’s emissions control strategy.

Continuous Monitors -- Some of the vehicle components or systems are

continuously tested by the vehicle’s OBD II system, while others are tested

only under specific vehicle operating conditions. The continuously monitored

components listed below are always ready:

1. Misre

2. Fuel System

3. Comprehensive Components (CCM)

Once the vehicle is running, the OBD II system is continuously checking the

above components, monitoring key engine sensors, watching for engine misre,