LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2017 >> Expedition XL, RWD >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Information Center - Instrumentation, Message Center, And Warning Chimes >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test Y : The Mil Is Never Or Always On >> Notes

Pinpoint Test Y : The Mil Is Never Or Always On: Notes

Normal Operation and Fault Conditions 

See MIL. Refer to Instrument Panel Cluster (IPC) .

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

If the engine MIL request message is missing or invalid for less than 5 seconds, the IPC defaults the MIL to its last state (on or off) based upon the last message received.

If the engine MIL request message is missing for 5 seconds or longer, the IPC sets DTC U0100:00 in continuous memory and defaults the MIL on.

Possible Sources 

scientia non olet · About LEMON Manuals