Polaris RZR 900 2017 Service Manual page 326

FUEL SYSTEM
DATA DISPLAY
ITEM
Fuel Pump
Number of steps the
Idle Air Control
Desired Position
Number of steps the
Idle Air Control
Position Command
Ignition Coil Dwell
Degrees BTDC that
the ECU is signaling
Ignition Timing
the coil to send spark
Injector Pulse Width
Intake Air
Temperature
Manifold Absolute Reading will be high
Pressure
Reading will be low
How much load the
Percent Engine Load
Indicates if the ECU
RPM Limit
Indicates what gear
Selected Gear
transmission switch
Spark Angle
Start Enable Driver
5.30
DEFINITION
≈ 232° F (111° C)
≈ 237° F (114° C)
≈ 252° F (122° C)
ECU control of the
fuel pump
ECU would like to
have the IAC open
ECU has the IAC
valve open
Time the ECU is
grounding the coil
0 to 10° BTDC
30 to 40° BTDC
to a cylinder
Time the ECU is
grounding the
injectors
Measures air
temperature at the
TMAP sensor
Measures air 14.7 PSI (101 kPa)
pressure inside the
5–7 PSI (34–48
intake manifold on
the TMAP sensor.
at key on and wide
7–11 PSI (48–76
open throttle.
at idle / closed
throttle.
engine is under
is currently limiting
RPM
position the dependent on gear
is in
Same as ignition
timing
ECU control of the
start solenoid
VALUE
Engine protection (ignition misfire)
ECU is grounding the fuel pump relay. ECU
ground this relay for the first 2–3 seconds after
On
key on and any time RPM is seen from the CPS
ECU is not grounding the fuel pump relay. Pump
Off
35–50
35 – 50
≈ 2–3 ms
Typical ignition timing on a warm engine at idle
Typical max spark at wide open throttle
Average reading on a warm engine at idle
2–3 ms
Unit is start-up enrichment or under rapid
4–7 ms
should be close to ambient air temperature.
Warm engine at idle may cause reading to be
varies
Engine not running and unit is near sea level
Normal reading when warm engine is at idle
kPa)
Normal reading when unit is 1/2 throttle to WOT
kPa)
Typical warm idle. Cold start up reading will be
20–30%
Active
Inactive
High, Low, Neutral, Reverse, Park
"–" or Null indicates no reading from the sensor /
selected
—
ECU is grounding the start solenoid. Unit should
Active
crank when key is turned to START
ECU is not grounding the start solenoid
Inactive
9930588 R02 - 2017-2020 RZR 900 900/S 900/S4 1000/S 1000/S4 Service Manual
VALUE DESCRIPTION
Hot light on – power limit
Engine protection (shutdown)
not running
typical warm idle
typical warm idle
–
acceleration
higher
higher
ECU is limiting the RPM
ECU is not limiting RPM
stuck between gear positions
—
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