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Creader Professional 129 EVO / EVO+
10. Heated Catalyst
11. A/C system
2.5 OBD II Monitor Readiness Status
OBD II systems must indicate whether or not the vehicle's PCM's monitor system has
completed testing on each component. Components that have been tested will be
reported as "Ready", or "Complete", meaning they have been tested by the OBD II
system. The purpose of recording readiness status is to allow inspectors to determine if
the vehicle's OBD II system has tested all the components and/or systems.
The Powertrain Control Module (PCM) sets a monitor to "Ready" or "Complete" after an
appropriate drive cycle has been performed. The drive cycle that enables a monitor and
sets 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 Diagnostic Trouble Codes (DTCs) with a code reader or a disconnected
battery, can result in Readiness Monitors being set to "Not Ready". Since the three
continuous monitors are constantly evaluating, they will be reported as "Ready" all
of the time. 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 become ready, the vehicle should be driven
under a variety of normal operating conditions. These operating conditions may include
a mix of highway driving and stop and go, city type driving, and at least one overnight-
off period. For specific information on getting your vehicle's OBD monitor system ready,
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 drive train.
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 dashbo-
ard light will blink or flash. This indicates a severe problem and flashing is intended to
discourage vehicle operation. The vehicle onboard diagnostic system cannot turn the
MIL off until the necessary repairs are completed or the condition no longer exists.
DTC -- Diagnostic Trouble Codes (DTC) that identifies which section of the emission
control system has malfunctioned.
Enabling Criteria -- Also termed Enabling Conditions. They are the vehicle- specific
events or conditions that must occur within the engine before the various monitors
will set, or run. Some monitors require the vehicle to follow a prescribed "drive cycle"
routine as part of the enabling criteria. Drive cycles vary among vehicles and for each
monitor in any particular vehicle. Please refer to the vehicle's factory service manual for
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