Roadi RDT40 - Manual (Page 8)

OWNER S MANUAL
,
OBD2 CODE READER
8
2.5 OBD II Monitor Readiness Status
OBD II systems must indicate whether or not the vehicle's PCM 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 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 hig hway driving and stop and go, city
type driving, and at least one overnig ht-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)--OBDII terminology for the on-
board computer that controls engine and drive train.