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Pinpoint Test I : The Tachometer Is Inoperative: Notes

WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions 

See Tachometer. REFER to: INSTRUMENT PANEL CLUSTER (IPC) - SYSTEM OPERATION AND COMPONENT DESCRIPTION

NOTE: If DTC U0100:00 sets in the IPC, other observable symptoms can be an inoperative speedometer, temperature gauge or odometer.

If the BCM does not receive the engine RPM data from the PCM for more than 1 second, the BCM and IPC set DTC U0100:00.

If the IPC does not receive the engine RPM data for more than 1 second, the IPC defaults the tachometer to 0 RPM.

Possible Sources 

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