Failure Mode Effects Management - Lincoln 1996 Continental V8-4.6L DOHC Service Manual

Failure Mode Effects Management

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Failure Mode Effects Management (FMEM) is an alternate system strategy in the Powertrain Control Module (PCM) designed to maintain vehicle operation if one or more sensor inputs fail.

When a sensor input is perceived to be out-of-limits by the PCM, an alternative strategy is initiated. The PCM substitutes a fixed value and continues to monitor the incorrect sensor input. if the suspect sensor operates within limits, the PCM returns to the normal engine running strategy.

All FMEM sensors display a sequence error message on the scan tool. The message may or may not be followed by a Key On Engine Off or Continuous DTCs when attempting Key On Engine Running Self-Test Mode.