Circuit Identification System
- Primary Circuit Identification -
The OEM method of circuit identification is known as the primary circuit identification system.
- Supplemental Circuit Identification -
The supplemental circuit identification is a/four - character code with the first two characters referencing a general subsystem and the second two characters referencing a more specific circuit function. The subsystems and circuit functions can be found in the list of general categories shown as follows:
- Braking/Traction System (Air System)
- Charging
- Control (Fuel, Engine, Cruise, Aftertretament)
- Emergency/Vision/Collision Avoidance
- Engine Accessories
- Ground
- HVAC
- Instrumentation, Monitoring (Warning Systems)
- Lighting Systems
- Operator Convenience, Entertainment, Navigation, Accessories
- Power
- Serial/Data Communication
- Trailer Systems
- Transmission and Drivetrain (Rear Axles)
- Body Functions
- Hybrid
- Separator -
The "#" character is used to separate the primary OEM circuit identifier from the supplemental suffix. The single space on each side of the "#" character is required for improved clarity.
- Application -
The methods used to apply the supplemental identification to the cables shall be specified by the OEMs. The application durability of the supplemental circuit characters must meet the OEMs specification for abrasion and fluid resistance.
- Application to Technical Document -
Each individual OEM shall determine the documents by which the supplemental circuit identification information will be furnished to their service organization.