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Home >> Ford >> 1994 >> Probe Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Engine Controls - Tests W/Codes - EEC-V (4.6L)) >> Additional System Functions >> Failure Mode Effects Management (FMEM)

Failure Mode Effects Management (FMEM)

WARNING: This page is about a different car, the 1995 Mercury Grand Marquis, 1995 Mercury Cougar, 1995 Lincoln Town Car, 1995 Ford Thunderbird, and 1995 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

FMEM mode allows system operation when sensors fail or transmit signals that are out of normal operating range. During FMEM mode, PCM substitutes a mid-range signal for defective sensor while continuing to monitor sensor. If faulty sensor signals return to normal operating range, PCM will use those signals. Depending on specific failure, a fault code may be set in PCM memory.