Can-Am DS 450 2008, Руководство по ремонту

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Section 04 ENGINE MANAGEMENT SYSTEM
Subsection 03 (MONITORING SYSTEM/FAULT CODES)
MONITORING SYSTEM/FAULT CODES
MONITORING SYSTEM
The EMS features a monitoring system that self-
diagnose its electronic components (control mod-
ules, sensors and actuators) to ascertain they are
not faulty or defective. This mode comes active
when ignition key is turned on.
NOTE: Some components need the engine to be
running so that they can be monitored (fuel injec-
tors for example).
When a malfunction is currently detected, the
ECM:
– Sets an active fault code.
– Adapts the proper protection strategy according
to the failure.
– Sends out signals to the check engine pilot lamp
to inform the rider of a particular condition.
When a minor fault occurs, the check engine pilot
lamp will turn on. The fault may disappear auto-
matically when the ignition key is turned off and
kept off until ECM turns off, then turned back on.
When an important fault occurs, the check engine
light will flash.
In the following situations, engine RPM will be
limited.
CONDITION
MAXIMUM
RPM
From 111 to 119°C
(232 to 246°F)
10250
From 120 to 130°C
(248 to 266°F)
8750
High engine
temperature
Above 130°C
(266°F)
7000
Limp home mode 5500
Low or high battery voltage 10250
Safety fuel cut-off
(TPS or internal memory error)
7000
When the fault is not active anymore, its status is
changed from active to occurred and it is stored in
the ECM. Stored fault codes are kept in the ECM
even if the battery is disconnected.
Verify if the check engine pilot lamp is ON or
blinks. If so, use the B.U.D.S. software and look
for fault codes to diagnose the trouble.
The following components or functions are moni-
tored.
COMPONENT
EMS (TPS, CPS, AAPTS, MAPS, CTS, IACV, neutral
switch, ignition coil and fuel injector)
Battery voltage
Engine RPM
CAN
ECM
Starter solenoid
Fuel pump
Cooling fan
Relays
FAULT CODES
The fault codes recorded in the ECM can be
checked by using the software B.U.D.S.
Many fault codes at the same time is likely to be
burnt fuse(s) or a faulty relay.
For more information pertaining to the fault codes
(state, count, first, etc.)
and report, refer to
B.U.D.S. online help.
When using the service action suggested in the
Fault section of B.U.D.S., the circuits are referred
to as ECM pins A1-1, which means the wiring be-
tween the ECM pin A1 and the sensor pin 1.
IMPORTANT: After a problem has been solved,
ensure to clear the fault(s) in the ECM using the
B.U.D.S. software. This will properly reset the ap-
propriate counter(s) and will also record that the
problem has been fixed in the ECM memory.
TPS (Throttle Position Sensor) Faults
Faults which are reported in B.U.D.S. fall into two
groups: TPS faults and adaptation faults. These
are displayed on the B.U.D.S. system as TPS OUT
OF RANGE and TPS ADAPTATION FAILURE.
TPS “OUT OF RANGE” Fault
It is caused by the sensor reading going out of its
allowable range. This fault can occur during the
whole range of movement of the throttle.
To diagnose this fully, it is recommended to oper-
ate the throttle through its full range. It is also rec-
ommended to release the throttle quickly as this
may also reveal a fault that is intermittent.
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