Crown Victoria V8-4.6L SOHC VIN 6 (1996)
Engine Control Module: Reset Procedure
Without Scan Tool
Resetting Keep Alive Memory (KAM)
Disconnect the negative lead from the battery for a minimum of 5 minutes. Resetting KAM will clear learned values the Powertrain Control
Module (PCM) has stored for adaptive systems such as idle and fuel.
After KAM has been reset, the vehicle may exhibit certain driveability concerns. It will be necessary to drive the vehicle to allow the PCM to
relearn values for optimum driveability and performance.
How to Clear Keep Alive Memory (KAM)
The PCM stores information about vehicle operating conditions and uses this information to compensate for component tolerances. When an
emission related component is replaced KAM may have to be cleared to erase the information stored by the PCM from the original component.
To clear KAM, disconnect the negative side of the battery for a minimum of 5 minutes.
Using Generic Scan Tool
DESCRIPTION
The Powertrain Control Module (PCM) Reset allows the scan tool to command the PCM to clear all emission-related diagnostic information.
When resetting the PCM, a DTC P1000 will be stored in the PCM until all the OBD II system monitors or components have been tested to satisfy
a drive cycle, without any other faults occurring. For more information about a drive cycle, refer to Drive Cycles.
The following events occur when a PCM reset is performed:
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Clears the number of Diagnostic Trouble Codes (DTC).
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Clears the DTCs.
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Clears the freeze frame data.
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Clears oxygen sensor test data.
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Resets status of the OBD II system monitors.
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Sets DTC P1000.
PROCEDURE
These are general instructions to reset PCM. Refer to the manufacturer's manual for specific instructions.
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Turn key OFF.
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Perform the necessary vehicle preparation and visual inspection.
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Connect scan tool to Data Link Connector (DLC).
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Turn ignition key ON or start vehicle (depending on the pinpoint/diagnostic manual instructions for the type of data requested).
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Verify tool is connected and communicating properly.
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Perform reset.
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When finished, turn ignition key to the OFF position.
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Disconnect scan tool from vehicle.
Using New Generation STAR (NGS) Tester
DESCRIPTION
The Powertrain Control Module (PCM) Reset allows the scan tool to command the PCM to clear all emission-related diagnostic information.
When resetting the PCM, a DTC P1000 will be stored in the PCM until all the OBD II system monitors or components have been tested to satisfy
a drive cycle, without any other faults occurring. For more information about a drive cycle, refer to Drive Cycles.
The following events occur when a PCM reset is performed:
-
Clears the number of Diagnostic Trouble Codes (DTC).
-
Clears the DTCs.
-
Clears the freeze frame data.
-
Clears oxygen sensor test data.
-
Resets status of the OBD II system monitors.
-
Sets DTC P1000.
PROCEDURE
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Turn key OFF.
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Perform the necessary vehicle preparation and visual inspection.
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Select VEHICLE & ENGINE SELECTION menu (OPTIONAL).
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Select NEW VEHICLE YEAR & MODEL.
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Select year, engine, model with the appropriate qualifier, if needed (i.e., transmission, 49 States, California) (OPTIONAL).
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Follow operating instructions from the menu.
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Select GENERIC OBD II FUNCTIONS.
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Press CONT button if all OBD II monitors are not complete.
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Turn key ON.
