Scanner Viewing and Saving Data
34
Submenu options may include:
• Trouble Code Information—opens a list of codes in ECM memory
• History Codes—opens a list of codes whose symptoms are not currently
present. History codes indicate an intermittently occurring problem.
• Failed This Ignition—opens a list of codes that set during the current ignition
cycle.
• MIL SVS or Message Requested—displays ECM requests to turn on the
malfunction indicator lamp (MIL) or service vehicle soon (SVS) lamp, or display
a driver information alert.
• Last Test Failed—displays a complete list of failed tests.
• Test Failed Since Code Cleared—displays a list of tests that failed since the
last time codes were cleared from ECM memory.
Clear Codes
The diagnostic tool clears codes from the vehicle electronic control module memory
on most vehicles. If this function is not available on the test vehicle, Clear Codes
does not appear as a menu option.
z To clear codes:
1. Select Clear Codes from the Codes Menu.
A confirmation message displays.
2. Make sure any conditions shown on the confirmation message are met, then
select Yes.
A “codes cleared” message displays once the operation is complete.
3. Select Continue to return to the Codes Menu.
Clearing codes erases all temporary ECM information, including Freeze
Frame/Failure Records. Make sure no vital diagnostic information will be
lost before clearing codes.
Freeze Frame/Failure Records
This selection displays the DTC that was set, along with corresponding data, when
the ECM commanded the malfunction indicator lamp (MIL) to turn on.
6.4 Viewing and Saving Data
Selecting Data or other similar data menu option (depending on the vehicle
manufacturer) displays PID data for the selected system (Figure 6-9).
Figure 6-9 Data display (PID List view)
During data display the main body of the screen is divided into two columns; the left-
hand column has a description of the parameter and the right-hand column shows
the current parameter value or state. PIDs are listed in the order in which they are
transmitted by the ECM, so variations between years, makes, and models will
occur.
The toolbar control icons are described in Scanner Control Icons on page 27 and
Common Toolbar Control Icons on page 9.
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