Operating instructions
ROM
Identification I Charge Coil Test Specifications
Model System
ROM
10
ROMPN
Type
1990
RXL
I 1
990
V2
Contact Service
Dept.
1991
RXL
I
FSM
582
404
0032
1991
500
II
FSM
752
4040033
1992
RXL
I
FSM
582
4040032
1992500
II
FSM
752
4040033
1993
RXL
I
FSM
583
4040036
1993500
II
FSM
762
4040037
1994-1995
RXL
I
FSM
581
4040044
1994500
II
FSM
782
4040043
1995500
II
1995500
V1
4040051
1993-1995
RXL
II
1995650
V1
4040057
Optional ROMs
for special applications
ROMID
Part
Number Application
1992500
V2
4040038 1991-1992500
1994650
HE1
4040042 1993-1994
RXL
ENGINE ELECTRICAL
EFI
Introduction
and Operation
Battery Charge Coil Test
Position/Resistance
G
to
G/W
.3
to
.5
ohms
G to
G/W
.3
to
.5
ohms
G to
G/W
.3
to .5
ohms
G to 8/W
.2
to
.4
ohms
8/W to
G/W
.2
to
.4
ohms
G to
G/W
.3
to
.5
ohms
G to 8/W .2
to
.4
ohms
8/W to
G/W
.2
to
.4
ohms
G to
G/W
.2
to.4
ohms
G to 8/W
.2
to
.4
ohms
81W
to
GIW
.2
to
.4
ohms
G
to
81W
.2
to
.4
ohms
81W
to
GIW
.2
to
.4
ohms
G to
81W
.2
to
.4
ohms
81W
to
GIW
.2
to
.4
ohms
G to
81W
.2
to
.4
ohms
81W
to
GIW
.2
to
.4
ohms
Description
For
repeated l
ean
failures
and
lean
starts.
For
high
el
eva
ti
on
lean
drive
away
.
Ca
li
br
ated
for
ethano
l.
NOTE: FSM 581 and
1994650
HE1
can be used for 1991-1992 RXLs, but may experience rich mid-range and
reduced fuel economy.
The machines equipped with Polaris Electronic
Fuel Injection (EFI) have many advantages over the normal
carburetor equipped models. The most noticeable improvements
wi
ll
be ease
of
throttle operation, better cold
weather starting and improved cold engine drive away. The EFI system also compensates for temperature and
altitude, and with minor adjustments
will perform well over a wide range
of
temperatures and altitudes.
To
assist technicians in troubleshooting and understanding the EFI,
we
have divided it into three separate
systems.
The
following is a short description
of
these three systems:
System
I is battery, battery charging, and how the EFI is powered up
or
energized.
System"
is fuel handling, fuel filtering, and fuel pressure regulations.
System'"
is electronics contro
l,
which includes the Electronic Control Unit (ECU), ECU inputs from
various sensors, and control of fuel to the cylinders by injector operation.
The
following information is a more detailed explanation
of
the three systems. It's very important during diagnosis
that each
of
these systems be checked. Failure to do so may result in a reoccurrence
of
that particular problem.
Basic Operation - System I
Battery, Battery Charging and Powering
Up
The
battery is the heart
of
the EFI system, its condition is critical to all EFI function
s.
Long off-season storage
periods, the high vibrations and extreme temperature variations which are encountered in snowmob
il
e
applications make periodiC battery inspection and service
essential.
Some
Polaris EFI systems have an alternator
or
charging system which will produce just enough output to
maintain the
EFI system (1990-1991 RXL). If the battery is partially shorted,
or
if
connections offer any high
resistance, the result might be a
lean fuel condition.
4.35
8/94