Pinpoint Tests Hd: Misfire Detection Monitor: Introduction

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 PCM DTCs erases any PCM recorded freeze frame data. Make sure to record any PCM freeze frame information before proceeding. Refer to Freeze Frame Data.