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Home >> Mercury >> 2008 >> Milan Base, 2.3 Z, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster (Ic), Message Center, And Warning Chimes >> Diagnostic Tests >> Instrument Cluster (IC), Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test E: The Tachometer Is Inoperative >> Normal Operation

Normal Operation

The PCM uses the crankshaft position sensor to measure the engine rpm, and sends the instrument cluster (IC) the data over the communication network, to command the tachometer gauge according to the data.

This pinpoint test is intended to diagnose the following:

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