Rotax 915 i A series Maintenance Manual page 354

SYSTEM DESCRIPTION
GENERAL NOTE
The control unit is the central module in the engine
management system.
Sensors continuously measure pressure, rotation
speed, temperature, load and knock signals and
send these measurement values to the ECU.
The digital ECU uses these measurement values to
determine not only the mixture but also the optimum
injection point for the fuel and ignition points specifi-
cally for each cylinder.
NOTE
The general safety instructions must be followed
during all work on the ECU!
SAFETY INSTRUCTION
m WARNING
Danger of damage to engine! There is a risk of
short circuits and cable fires during work on
the engine management system.
All installation work on the engine management
system should be carried out with the engine
switched off and the battery (negative terminal)
disconnected. All engine controls (e.g. switches)
must be set in a way that the engine in not sup-
plied with electrical power.
ATTENTION
Danger of damage to the fuel distribution sys-
tem and ignition unit!
MAINTENANCE
Beside maintenance and special checks,
see the Maintenance Manual Line for the
engine type 915 i A Series
76–10–00
Page 4
August 01 2018
BRP-Rotax
MAINTENANCE MANUAL HEAVY
ATTENTION
The wiring harness or service wiring harness
connectors must be only installed into respec-
tive sockets of the ECU (pay attention to the
marking). If excessive force is used or the po-
sition is wrong, the pins can be bent and the
ECU must be replaced.
Effectivity: 915 i A Series
Edition 0/Rev. 0