Innova CanOBD2&1 Owner's Manual page 48

OBD2 Systems
I/M READINESS TESTING
system status information (open loop, closed loop, fuel system status,
etc.) generated by the various vehicle sensors, switches and actuators.
In effect the CanOBD2&1 Scan Tool lets you view, in "real time", the
same signal values generated by the sensors, actuators, switches
and/or vehicle system status information used by the vehicle's computer
when calculating and conducting system adjustments and corrections.
The real time (Live Data) vehicle operating information (values/status) that
the computer supplies to the CanOBD2&1 Scan Tool for each sensor,
actuator, switch, etc. is called Parameter Identification (PID) Data.
Each PID (sensor, actuator switch, status, etc.) has a set of operating
characteristics and features (parameters) that serve to identify it. The
CanOBD2&1 Scan Tool displays this information for each sensor,
actuator, switch or status that is supported by the vehicle under test.
WARNING: If the vehicle must be driven in order to perform a
troubleshooting procedure, ALWAYS have a second person help you.
One person should drive the vehicle while the other person observes
the CanOBD2&1 Scan Tool data. Trying to drive and operate the
CanOBD2&1 Scan Tool at the same time is dangerous, and could
cause a serious traffic accident.
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