DTC Status

This selection will display any DTCs that did not run during the current ignition cycle or have reported a test failure during this ignition up to a maximum of 33 DTCs. The DTC tests which run and pass will cause that DTC number to be removed from the scan tool screen.

Fail This Ign. (Fail This Ignition)
This selection will display all of the DTCs that have failed during the present ignition cycle.

History
This selection will display only the DTCs that are stored to the control modules history memory. The history memory will not display Type B DTCs that have not yet requested by the MIL. The history memory will display all of the type A DTCs and the type B DTCs that have requested the MIL and that have failed within the last 40 warm-up cycles. In addition, the history memory will display all of the type C DTCs that have failed within the last 40 warm-up cycles.

Last Test Fail
This selection will display only DTCs that have failed the last time the test ran. The last test may have ran during a previous ignition cycle if an A type or B type DTC is displayed. For type C DTCs, the last failure must have occurred during the current ignition cycle in order to appear as the Last Test Fail.

MIL Request
This selection will display only the DTCs that are requesting the MIL. Type C DTCs cannot be displayed by using this option. This selection will report type B DTCs only after the MIL has been requested.

Not run SCC (Not Run Since Code Clear)
This option will display up to 33 DTCs that have not run since the DTCs were last cleared. Since any displayed DTCs have not run, their condition, passing or failing, is unknown.

Test Fail SCC (Tested Failed Since Code Clear)
This selection will display all of the active DTCs and the history DTCs that have reported a test failure since the last time that the DTCs were cleared. The DTCs that last failed more than 40 warm-up cycles before this option is selected will not be displayed.

Specific DTC Mode
This mode is used in order to check the status of the individual diagnostic tests by the DTC number. You can access the selection if a DTC has passed, if a DTC has failed, or both. Many OBD II DTC mode descriptions are possible because of the extensive amount of information that the diagnostic executive monitors regarding each test.

This selection will only allow the entry of the DTC numbers that are supported by the vehicle being tested. If an attempt is made to enter the DTC numbers for tests which the diagnostic executive does not recognize, the requested information will not be displayed correctly and the scan tool may display an error message. This also applies to using the DTC trigger option in the Snapshot mode. If an invalid DTC is entered, the scan tool will not trigger.

Failed Last Test
This message displayed indicates that the last diagnostic test failed for the selected DTC. For type A DTCs and type B DTCs, this message will be displayed during subsequent ignition cycles until the test passes or the DTCs are cleared. For the type C DTCs, this message will clear whenever the ignition is cycled.

Failed Since Clear
This message displayed indicates that the DTC has failed at least once within the last 40 warm-up cycles since the last time that the DTCs were cleared.

Failed This Ign. (Failed This Ignition)
This message displayed indicates that the diagnostic test has failed at least once during the current ignition cycle. This message will clear when the DTCs are cleared or when the ignition is cycled.

History DTC
This message displayed indicates that the DTC has been stored to memory as a valid fault. A DTC displayed as a History fault does not necessarily mean that the fault is no longer present. The history description means that all of the conditions that are necessary for reporting a fault have been met, maybe even currently, and the information was stored to the control module memory.

MIL Requested
This message displayed indicates that the DTC is currently causing the MIL to be turned ON. Remember that only type A and B DTCs can request the MIL. The MIL request cannot be used in order to determine if the DTC fault conditions are currently being experienced. This is because the diagnostic executive will require up to 3 trips during which the diagnostic test passes to turn OFF the MIL.

Not Run Since CI (Not Run Since Cleared)
This message displayed indicates that the selected diagnostic test has not run since the last time DTCs were cleared. Therefore, the diagnostic test status, passing or failing, is unknown. After DTCs are cleared, this message will continue to be displayed until the diagnostic test runs.

Not Run This Ign. (Not Run This Ignition)
This message displayed indicates that the selected diagnostic test has not run yet this ignition cycle.

Test Ran and Passed
This message displayed indicates that the selected diagnostic test has:
^ Passed the last test
^ Ran and passed during this ignition cycle
^ Ran and passed since the DTCs were last cleared
^ Not failed since the DTCs were last cleared

If the indicated status of the vehicle is Test Ran and Passed after a repair verification, the vehicle is ready to be released to the customer.

If the indicated status of the vehicle is Failed This Ign. after a repair verification, then repair is incomplete and further diagnosis is required.

Prior to repairing a vehicle, you can use the status information in order to evaluate the state of the diagnostic test, and to help to identify an intermittent problem. The technician can conclude that although the MIL is illuminated, the fault condition that caused the DTC to set is not present. An intermittent condition must be the cause.