Parameter Identification (PID)

PARAMETER IDENTIFICATION (PID)

Description
The parameter identification (PID) mode allows access to powertrain control module (PCM) information. This includes analog and digital signal inputs and outputs along with calculated values and the system status. There are 2 types of PID lists available and both are used. The first is the Generic (J1979) on board diagnostic (OBD) PID list. This is a standard set of PIDs that all diagnostic tools must be able to access. The second is a Ford specific (J21 90) PID list which can be accessed by an appropriate diagnostic tool. When accessing any of these PIDs, they are continuously updated. The Generic or Ford PID list provides definitions and values in appropriate units. For more information, refer to the Society of Automotive Engineers (SAE) document J2205.