Failure Effects Mode Management (Fail Safe Operation)

Failure Mode Effects Management

During some EDIS faults, the failure mode effects management (FMEM) portion of the EDIS ignition module will maintain vehicle operation. If the EDIS module does not receive the SAW input, it will automatically turn the ignition coils on and off using the PIP signal. However, this condition will result in fixed spark timing (10 degrees BTDC). If the EDIS module does not receive the VRS input, the vehicle will not start.