CODESCAN CS602 User’s Manual
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Fuel System
ve Components (CCM)
nce the vehicle is running, the OBD II system is continuously checking the above
on-Continuous Monitors
-- Unlike the continuous monitors, many emissions and
System
tion
3.5 OBD II Monitor Readiness Status
vehicle’s PCM’s monitor system
he powertrain control module (PCM) sets a monitor to “Ready” or “Complete”
order for the OBD monitor system to become ready, the vehicle should be driven
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Comprehensi
O
components, monitoring key engine sensors, watching for engine misfire, and
monitoring fuel demands.
N
engine system components require the vehicle to be operated under specific
conditions before the monitor is ready. These monitors are termed non-continuous
monitors and are listed below:
1) EGR System
2) O2 Sensors
3) Catalyst
4) Evaporative
5) O2 Sensor Heater
6) Secondary air Injec
7) Heated Catalyst
8) A/C system
OBD II systems must indicate whether or not the
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.
T
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
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
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