8
GENERAL INFORMATION (cont.)
OBD2 Monitor readiness status
OBD2 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 OBD2 system. The purpose of recording readiness status is to allow inspectors
to determine if the vehicle’s OBD2 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
noncontinuous 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 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.
Audio tone
The audio tone could be configured according to the I/M Readiness Status. This
function is invaluable when working in bright areas where LED illumination alone is
not sufficient.
It is recommended to set the audio tone to Beep ON. For detailed setup
information, please refer to Key Beep Set in Menu Setup.
Note:
The following audio tone description only works in Scan Tool mode.
Different audio tone with different LEDs will indicates different I/M Readiness
Status.
LED
Audio Tone
Beep Interval
Green LED
Beep Off
Yellow LED
Two short beeps
0.5 seconds
Red LED
Two short beeps
0.5 seconds
