Cross-checking processors for powertrain control systems using a dedicated serial data link

An engine management system for a vehicle, comprising:

• a serial vehicle data bus;
• an engine control module connected to said serial vehicle data bus;
• a transmission control module connected to said serial vehicle data bus;
• and
• a dedicated data bus connecting said transmission control module to said engine control module, wherein said engine control module and said transmission control module perform processor validity and integrity checks over said dedicated data bus.

An engine management system for a vehicle, comprising:

• a vehicle data bus;
• an engine control module connected to said vehicle data bus;
• a transmission control module connected to said vehicle data bus;
• an electronic throttle control sensor connected to said engine control module;
• and
• a dedicated data bus connecting said transmission control module to said engine control module, wherein said engine control module and said transmission control module perform processor validity and integrity checks over said dedicated data bus.

An engine management system for a vehicle, comprising:

• a serial vehicle data bus;
• an engine control module connected to said serial vehicle data bus;
• a transmission control module connected to said serial vehicle data bus;
• an electronic throttle control sensor connected to said engine control module;
• an electronic throttle control sensor connected to said serial vehicle data bus;
• and
• a dedicated serial data bus connecting said transmission control module to said engine control module, wherein said engine control module and said transmission control module perform processor validity and integrity checks over said dedicated data bus.