Autel Autolink AL301 [6/109] Obd ii monitor readiness status
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Autel Autolink AL301 [6/109] Obd ii monitor readiness status

5
1) EGR System
2) O2 Sensors
3) Catalyst
4) Evaporative System
5) O2 Sensor Heater
6) Secondary air
7) Heated Catalyst
8) 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 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.

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