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ROYAL ENFIELD VEHICLE SERVICE MANUAL - EURO IV
175
SPECIFICATIONS / FUNCTIONS OF THE VARIOUS EMS PARTS
1. ELECTRONIC CONTROL UNIT (ECU)
The Electronic Control Unit (ECU) is located inside the Electricals box on the Left side (Bullet EFI/ Classic EFI models)
and under the seat (Continental GT models).
The ECU consists of a microprocessor with two memories Flash Memory and E
2
PROM.
Flash memory is an exclusive recording unit. It collects different inputs from various sensors and calculates optimized
values and provides the outputs to the respective controlling devices.
E
2
PROM is an abbreviation for Electronically Erasable Programmable Read Only Memory. This memory records
information related to performance of the various sensors in the EMS on a real time basis AND also records any sensor
failures if it occurs during operation of the motorcycle.
The main advantage of E2PROM is it records data, even when the motorcycle’s electrical system is switched OFF.
This will help in diagnosing the motorcycle performance and also to view the history and defect codes, whenever the
Royal Enfield NACS II diagnostic tool is connected to the socket in the wiring harness of the motorcycle.
Once the defect is diagnosed and corrected, the history of the defect can be erased using the Royal Enfield NACS II
diagnostic tool.
SPECIFICATION
Operating Voltage: 8 – 16 V
Sensor Supply Voltage: 5 V
Operating temperature: –10ºC to + 60ºC
Storage Temperature: –20ºC to + 80ºC
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