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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Pinpoint Test Dz: Universal Heated Oxygen Sensor (Ho2S) Through Pinpoint Test Hg: Positive Crankcase Ventilation (PCV) System - (Except Diesel & Hybrid) >> Pinpoint Test Hd: Misfire Detection Monitor >> Introduction

Pinpoint Test Hd: Misfire Detection Monitor: Introduction

WARNING: CROWN VICTORIA POLICE INTERCEPTOR VEHICLES EQUIPPED WITH FIRE SUPPRESSION SYSTEM, REFER TO FIRE SUPPRESSION SYSTEM ARTICLE . 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 .

Fig 1: Camshaft Position (CMP) Sensor Connector (1 Of 2)
G06054009Courtesy of FORD MOTOR CO.
Fig 2: Camshaft Position (CMP) Sensor Connector (2 Of 2)
G06054010Courtesy of FORD MOTOR CO.
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