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

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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