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FX Series Full System Scan Tool
10
The power-train 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 scan tool 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
Power-train 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
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