Pinpoint Test HD: Misfire Detection Monitor: Introduction
WARNING:
CROWN VICTORIA POLICE INTERCEPTOR VEHICLES EQUIPPED WITH FIRE SUPPRESSION SYSTEM, REFER TO APPROPRIATE FIRE SUPPRESSION ARTICLE FOR IMPORTANT SAFETY WARNINGS
. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
NOTE:
Mechanical noise caused by the front end accessory drive components, mechanically driven cooling fans, or rough roads at high RPM with light load conditions may produce a non-symmetrical loss of cylinder acceleration, which may result in a misfire.
This pinpoint test is intended to diagnose the misfire detection monitor.
Clearing the powertrain control module (PCM) diagnostic trouble codes (DTCs) erases any PCM recorded freeze frame data. Make sure to record any PCM freeze frame information before proceeding. Refer to FREEZE FRAME DATA .