ROAD CALL TECHNICIAN WAS PICKING UP BUS, COMPLAINT: ABS INDICATOR LIGHT ON DASHBOARD MALFUNCTION. PARKING BRAKE PRESSURE INDICATOR ON AND WARNING, MECHANIC REPORTED FLAME AND SMOKE FROM THE EHCU COMING FROM HYDRAULIC UNIT AT CONNECTOR TO ECU BRAKE MODULE. MECHANIC DISCONNECTED BATTERY CABLES. NO INJURY REPORTED. BUS WAS TOWED TO THE LANCASTER (NH) SHOP. THERE WAS NO FIRE EXTENSION TO THE BODY OR ANY OTHER COMPONENT. ONLY THE CABLE HARNESS AND THE EHCU WAS AFFECTED. IC NAVISTAR SERVICE NOTIFIED IMMEDIATELY - BUS WAS TOWED TO NAV DEALER IN MANCHESTER, NH FOR WARRANTY REPAIR. *TR