Failure Effects Mode Management (Fail Safe Operation)

OPERATION
During some Distributorless Ignition System (DIS) faults, the Failure Mode Effects Management (FMEM) portion of the DIS module will maintain vehicle operation. If the ignition module does not receive the Spark Output (SPOUT) input signal, it will turn the coils "ON" and "OFF" using the Profile Ignition Pick-up (PIP) signal. In doing so, the timing and dwell are fixed at 10 degrees BTDC. If the module does not receive the Cylinder Identification (CID) input signal, random coil synchronization will be attempted. Several start attempts may be required before the engine will start. If the DIS module loses CID input while the engine is running, the module will remember the proper firing order and continue to fire in order to maintain engine operation.