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Home >> Ford >> 2011 >> Escape Base, 2.5 7, AWD, Standard >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Instrumentation System, Message Center & Warning Chimes >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test C: The Temperature Gauge Is Inoperative (Non-Hybrid) >> Normal Operation

Normal Operation

The PCM uses the Engine Coolant Temperature (ECT) sensor to measure the engine temperature on the 3.0L engine and the Cylinder Head Temperature (CHT) sensor on the 2.5L engine. The Instrument Cluster (IC) receives the engine temperature data from the PCM over the High Speed Controller Area Network (HS-CAN) communication bus. The IC  monitors the engine temperature data received from the PCM and commands the temperature gauge indication with a corresponding movement of the pointer.

If the IC  receives invalid engine temperature data from the PCM for 5 seconds or less, the IC  defaults the temperature gauge to the last setting, based upon the last known good temperature status message.

If the IC  does not receive the engine coolant temperature status message from the PCM for more than 5 seconds, the IC  sets DTC U0100 in continuous memory and defaults the temperature gauge to cold (C).

If the IC  receives invalid data for more than 5 seconds, the IC  sets DTC U2199 and defaults the temperature gauge to cold (C).

This pinpoint test is intended to diagnose the following: 

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