LEMON Manuals: Even more car manuals for everyone
Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 630 (Instrument Cluster) >> Diagnosis And Testing >> Instrument Cluster >> Pinpoint Tests >> Pinpoint Test S: The Powertrain Malfunction (Wrench) Warning Indicator is Never/Always On >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The powertrain control module (PCM) and the transmission control module (TCM) monitor the powertrain system and provide the instrument cluster with the operating status over the communication network. When a system concern is detected, the PCM and/or the TCM provides the instrument cluster with a signal commanding the instrument cluster to illuminate the powertrain malfunction (wrench) warning indicator.