DeVille d Elegance V8-4.6L VIN Y (1998)
Powertrain Control Module: Description and Operation
Scan Tool Parameters
Scan Tool Parameter - DTC Status
This selection will display any DTCs that have not run during the current ignition cycle or have reported a test failure during this ignition cycle. DTC
tests which run and pass will cause that DTC number to be removed from this scan tool display.
Scan Tool Parameter - Fail This Ignition
This selection will display all DTCs that have failed during the present ignition cycle.
Scan Tool Parameter - 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 or B
type DTC is displayed. For type C DTCs, the last failure must have occurred during the current ignition cycle to appear as Last Test Fail.
Scan Tool Parameter - MIL SVS or Message Requested
This selection will display only DTCs that are requesting the MIL or a message be displayed. Type C DTCs that do not request a message cannot be
displayed using this option. This selection will report type B DTCs only after they have failed twice and requested the MIL.
Scan Tool Parameter - Not Run Since Code Clear
This selection will display DTCs that have not tested since codes were last cleared. Since any displayed DTCs have not run, their condition (passing or
failing) is unknown.
Scan Tool Parameter - Test Fail Since Code Clear
This selection will display all active and history DTCs that have reported a failure since the last time codes were cleared. DTCs that last failed over 40
warm-up cycles will not be displayed.
Scan Tool Parameter - History Code
This selection will display only DTCs that are stored to the PCMs history memory. It will not display type B DTCs that have not requested the MIL. It
will display all type A DTCs (and type B DTCs which have requested the MIL) that have failed within the last 40 warm-up cycles. In addition, it will
display all type C DTCs that have failed within the last 40 warm-up cycles. Fuel trim and misfire DTCs are stored for 80 warm-up cycles.
