drive cycle has been performed. The drive cycle that enables a monitor
and sets the readiness codes to "Ready" varies for each individual
monitor. Once a monitor is set as "Ready" or "Complete",it will remain
in this state. A number of factors, including erasing of Diagnostiv
Trouble Codes(DTCs)
With a scan tool can result in Readiness Monitors being set to "Not
Ready". Since the three continuous monitors are constantly evaluating,
they will be reported as "Ready" at all times. If testing of a particular
supported non-continuous monitor has not been completed, the monitor
status will be reported as" Not Complete" or "Not Ready".
In order for the OBD monitor system to be ready, the vehicle should be
driven under a variety of normal operating conditions. These operating
conditions may include a mix of highway driving, stop-and-go city type
driving, and at least one overnight-off period. For specific informaion
on priming your vehicle's OBD monitor system,please consult your
vehicle owner's manual.
2.6 OBD II Definitions
Powertrain Control Module (PCM)—OBD II terminology for the
on-board computer that controls engine and drivetrain.
Malfunction Indicator Light (MIL)—Malfunction Indicator Light
(Service Engine Soon, Check Engine) is a term used for the light on
the instrument panel. It is to alert the driver and/or the repair
technician that there is a problem with one or more of vehicle's systems
and may cause emissions to exceed federal standards. If the MIL
illuminates with a steady light, it indicates that a problem has been
detected and the vehicle should be serviced as soon as possible. Under
certain conditions, the dashboard light will blink or fash. This indicates
a severe problem and flashing is intended to discourage vehicle
operation. The vehicle on board diagnostic system can not turn the
MIL off until the necessary repairs are completed or the condition no
longer exists.
DTC—Diagnostic Trouble Codes (DTC) are codes that identify which
section of the emission control system has malfunctioned.
Enabkubg Cruterua—Also termed Enabling Conditions. They are the
Vehicle—specific events or conditions that must occur within the engine
before the various monitors require the engine before the various
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