ISO 11992-4:2014 pdf free

ISO 11992-4:2014 pdf free.Road vehicles – Interchange of digital information on electrical connections between towing and towed vehicles
Vehicle inspection and repair specifies the use case to enable external test equipment connected to the road train to qualify the readiness of any vehicle and to perform vehicle diagnostic fault tracing as part of a repair.
In this case, usually the external test equipment is connected to the commercial vehicle and requests data from the road train that can be qualified to determine the readiness of the vehicle(s) or to perform vehicle diagnostic fault tracing as part of a repair.
ECU/vehicle software reprogramming specifies the use case to reprogram the ECU(s) of a towed vehicle through its data communication channel.
In this case, usually the external programming equipment is connected to the commercial vehicle or directly to a towed vehicle and uses diagnostic communication to (re)program or configure ECU(S) located in the towed vehicle.
ECU/vehicle assembly line inspection and repair specifies the use case to enable an external test system connected to a towed vehicle to support the assembly line inspection and repair of the towed vehicle’s ECU systems.
In this case, usually the external test equipment is connected to the commercial vehicle or directly to the towed vehicle and uses diagnostic services to determine the readiness of the vehicle(s) or to perform vehicle diagnostic fault tracing as part of a repair.
Multipurpose data transfer between vehicles specifies the use case to enable the ECU(S) in any vehicle of the road train to retrieve information from other vehicle’s ECU(S).
The diagnostic applications are divided into two types.
– Basic diagnostics:
The purpose of the basic diagnostics is to provide the vehicle’s independent identification and diagnostic information. All basic diagnostic functions and services shall be provided under all operation conditions in the default diagnostic session without the need for specific access rights.
– Enhanced diagnostics:
The support and the conditions, under which the enhanced diagnostic functions and services are provided, are manufacturer/system-supplier specific. It is in the responsibility of the manufacturer/system supplier to secure a server against unauthorized access and to ensure;performance and safe operation in all operation modes allowing enhanced diagnostics.
The functions, services, and protocols of the OSI layers 1 to 4 shall be identical for basic diagnostics and enhanced diagnostics. For OSI layers 5 to 7, the implementation of the functions, services, and protocols are varying according to the definitions given in this document.ISO 11992-4 pdf download.