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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 593 (Information Center - Instrumentation, Message Center, And Warning Chimes) >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test Ai : The Engine Hours And Engine Idle Hours Display Is Inoperative >> Notes

Pinpoint Test Ai : The Engine Hours And Engine Idle Hours Display Is Inoperative: Notes

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions 

See Engine Hours Display and Engine Idle Hours Display. Refer to Information And Message Center .

If the engine speed message is missing or invalid for less than 5 seconds, the IPC defaults engine hours and engine idle hours displays to the last display based on the last message received.

If the vehicle speed message is missing or invalid for 5 seconds or longer, the IPC sets DTC U0100:00 and defaults the engine hours and engine idle hours to the last displayed value with no additional accumulation.

Possible Sources 

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