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Freeze Frame
Typically, the stored frame is the last DTC that occurred. Certain DTCs that have a
greater impact on vehicle emission, have a higher priority. In these cases, the top
prioritized DTC is the one for which the freeze frame records are retained. Freeze
data includes a
“snapshot” of critical parameter values at the time the DTC is set.
Clear DTC
This option is used to clear all emission related diagnostic data such as DTCs, freeze
frame data and manufacturer-specific enhanced data from the vehicle
’s ECM.
A confirmation screen displays when the clear codes option is selected to prevent
accidental loss of data. Select
Yes
to continue or
No
to exit.
I/M Readiness
This function is used to check the readiness of the monitoring system. It is an excellent
function to use prior to having a vehicle inspected for state emissions compliance. Select
I/M Readiness
to display a sub menu with two choices:
Since DTCs Cleared
— displays the status of monitors since the last time the DTCs
are erased.
This Driving Cycle
— displays the status of monitors since the beginning of the
current drive cycle.
Live Data
This function displays the real time PID data from ECU. Displayed data includes analog
inputs and outputs, digital inputs and outputs, and system status information broadcast
on the vehicle data stream.
Live data can be displayed in various modes, see
for detailed information.
On-Board Monitor
Use this option to view the results of On-Board Monitor tests. The tests are useful after
servicing or after erasing a vehicle
’s control module memory.
Component Test
This service enables bi-directional control of the ECM so that the diagnostic tool is able
to transmit control commands to operate the vehicle systems. This function is useful in
determining whether the ECM responds to a command well.
Vehicle Information
The option displays the vehicle identification number (VIN), the calibration identification,
and the calibration verification number (CVN), and other information of the test vehicle.
