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Scanner
Scanner Operation
Codes Menu
This selection may appear as Codes, Codes Menu, Codes Only, Codes (No Data), Service Codes
or something similar on the menu. Selecting opens a list of viewing options that includes:
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Display Codes
This function opens either a list of diagnostic trouble codes (DTCs) stored in the selected vehicle
electronic control module (ECM), or a submenu of DTC viewing options. The code list includes the
DTC and a brief description (
Figure 3-11 DTC results
Submenu options may include:
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Trouble Code Information
—opens a list of codes in ECM memory
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History Codes
—opens a list of codes whose symptoms are not currently present. History
codes indicate an intermittently occurring problem.
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Failed This Ignition
—opens a list of codes that set during the current ignition cycle.
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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.
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Last Test Failed
—displays a complete list of failed tests.
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Test Failed Since Code Cleared
—displays a list of tests that failed since the last time codes
were cleared from ECM memory.