Subsection 01 (DIAGNOSTIC AND FAULT CODES)
DIAGNOSTIC AND FAULT CODES
GENERAL
MONITORING SYSTEM
The Engine Management System (EMS) features
a monitoring system that self-diagnoses various
electrical and electronic components. This mode
becomes active when the ignition key is turned
ON.
NOTE:
Some components require the engine to
be running to be monitored (fuel injectors for ex-
ample).
The monitoring system continuously validates
that the components (control modules, sensors
and actuators) are not faulty or defective. When
a malfunction is detected, the related electronic
module(s):
– Sets an active fault code.
– Adapts the proper protection strategy accord-
ing to the failure.
– Sends out signals to the multifunction gauge to
inform the rider of a particular condition.
A fault code is an indication that a glitch or mal-
function is detected by the monitoring system of
the vehicle.
If a minor fault occurs, the engine and vehicle will
continue to operate without noticeable loss of per-
formance.
If a more important fault occurs, engine RPM may
be limited. The engine/vehicle will continue to op-
erate with reduced performance.
If a major component of the EMS fails, engine
RPM will be limited as well as vehicle speed.
These
strategies
are
used
to
protect
engine/electrical
system
from
damage
and
to maintain safe operation of the vehicle. In ex-
treme cases, the engine may also be completely
shut down.
Pilot Lamps for Problematic
Conditions
When a problem is detected, a pilot lamp will turn
on or blink in the multifunction gauge. If the fault
that caused the pilot lamp to come on is momen-
tary, the pilot lamp may turn off automatically, or
may need to be reset by powering down the ve-
hicle and then restarting it.
A message may also be displayed to provide ad-
ditional information related to the fault that turned
on the pilot lamp. Refer to the following chart.
NOTE:
In some cases, the CHECK ENGINE mes-
sage can be displayed along with other messages.
PILOT
LAMP
MULTI-
FUNCTION
GAUGE
MESSAGE
CAUSE
DESS KEY NOT
RECOGNIZED
Module unable to read the
key
BAD KEY
Key not programmed for
the vehicle
LO BATT VOLT Low system voltage
HIGH BATT VOLT High system voltage
LOW OIL
PRESSURE
STOP ENGINE
Low engine oil pressure
LIMP HOME
MODE
An important engine
management component
is not working properly.
Vehicle performance is
purposely limited
CHECK ENGINE
An engine management
component is not
functioning properly
MAINTENANCE
REQUIRED
Periodic maintenance
required
ECM NOT
RECOGNIZED
Communication error
between gauge and ECM
CHECK DPS
DPS malfunction
TRANSMISSION
SIGNAL FAULT
Gauge receives an invalid
gear position data
BRAKE
Displayed when brake is
applied for more than 15
seconds (while riding)
HI TEMP
High engine temperature
Limp Home Mode
When a major component of the EMS is not oper-
ating properly, limp home mode will be set.
Engine RPM will be limited and/or engine behav-
ior and control may be modified depending on the
cause of the failure.
This mode allows the rider to return home, which
would otherwise not be possible without this ad-
vanced system.
LIMP HOME will be displayed in the multifunction
gauge and the CHECK ENGINE light symbol will
be on in the gauge.
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