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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Information Center - Instrument Cluster (Ic), Message Center, & Warning Chimes) >> Diagnostic Tests >> Instrument Cluster (IC), Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test H: The Speedometer/Odometer Is Inoperative >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

The instrument cluster (IC) receives the vehicle speed information from the PCM over the communication network and displays it on the speedometer. If the instrument cluster (IC) receives no vehicle speed signal after 1 second, the speedometer defaults to 0.

The instrument cluster (IC) receives an odometer message from the PCM and stores the mileage in memory. When the instrument cluster (IC) fails to receive the odometer message for more than 2 seconds, the odometer displays dashes.

This pinpoint test is intended to diagnose the following:

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