Fault recognition in engine control module

The following faults are monitored in the engine control module:

• Interface, i.e. line to CAS control module: In this case, the check is carried out in order to establish whether a signal is received and whether this signal is not subject to excessive interference.
• Variable code: A check is conducted as to whether the variable code which is sent by the CAS control module agrees with the value calculated in the DME (DDE) control module.

Engine start is inhibited if a fault is detected.