Section 7
Electrical
Controllers
Figure 7-4 Contollers
The EJB is the electrical load center for the cab. The cab and the associated controllers listed operate on 24VDC. The 12/24 VDC
converter located in the battery box supplies the necessary power requirements.
The ELC(Electronic Lighting Controller) supplies the signals for all the lighting functions(24VDC in cab and roof) and it’s
outputs are used to activate 24VDC relays in the electrical load center mounted in the battery box. These relays in turn control all
the 12VDC exterior lighting.
The VIC(Vehicle Intelligence Center) is the main controller and communicator for the vehicle.
The EBS(Electronic Braking System) is the controller for the EoA(Electric over Air) braking system.
The OBD plug in the image above is the 16-pin style OBD connector typically found in passenger cars. It is 24VDC and is to be
used with the DAVIE Service Tool. Communication with the engine must be done through the 9-pin Diagnostic
connector(12VDC) located in the lower dash between the steering wheel and door aperture.
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