Chassis Control Unit (Ccu)/Codes (F5 Lxr); Testing Oil Level Sensor (2-Stroke); Accessing Ccu Codes; Clearing Fault Codes - Arctic Cat Sno Pro 120 Service Manual

5. Test between the three yellow wires for a total of
three tests.
6. With the engine running at 2500-3000 RPM, all wire
tests must be within 36-44 volts.
 NOTE: If tests failed, check all connections, etc.,
and test again. If no voltage is present, replace the
stator assembly.
Chassis Control Unit
(CCU)/Codes (F5 LXR)
The CCU distributes regulated DC power to the chassis
electrical systems and controls the forward/reverse shift-
ing of the ACT drive to ensure safe operation.
The CCU has two DC outputs used for lighting circuits.
Both outputs have a circuit breaker (self resetting
devices) protecting components from over-current and
short circuit situations. If a system stops working, a short
has likely occurred and the system has shut itself off
much like a fuse will blow if a circuit is shorted to
ground. However, unlike a fuse if the short is resolved,
the CCU will reset the output and the system will return
to normal operation.
The first output, labeled the High Power DC Output, sup-
plies power for the headlights and handwarmers and is on
only while the engine is running. This output is turned off
during shifting to allow maximum power transfer to the
ACT drive.
The second output, labeled the Low Power DC Output,
supplies power to the gauge, speed sensor, taillight,
accessory plugs, and APV servomotor via the Engine
Control Unit. This output is on only while the engine is
running. It is not turned off during shifting.
 NOTE: If the engine will not run, the problem is not
related to the CCU.
SERVICE ICON
The Service Icon is controlled by the CCU/ECU and may
illuminate for a number of reasons. The icon should illu-
minate or illuminates each time the engine is started, and it
should go out after a few seconds. If the icon stays illumi-
nated while the engine is running, the CCU/ECU is receiv-
ing input that is outside of its established parameters.
Deluxe Gauge

Accessing CCU Codes

1. Connect the appropriate harness from CCU Diagnos-
tic Test Kit to the diagnostic port.
2. Start the engine. After approximately 5 seconds, the
service icon on the gauge will begin flashing.
3. The readout screen will display an error code as
CCU followed by a number (refer to the CCU Diag-
nostic Codes chart for descriptions). When all error
codes have been output, the service icon flashes
twice quickly.
Code Trouble
CCU 32 High power DC
output over current.
CCU 33 High power DC
output shorted.
CCU 34 Low power DC
output over current.
CCU 35 Low power DC output
shorted.
CCU 37 System over voltage. Spike in battery voltage - excessive
CCU 38 Gear shift actuator
failure.
CCU 42 Tachometer input
failure (engine
running - no
tachometer signal
present).
CCU 43 Gear position switch
failure.
CCU 44 CCU over
temperature.

Clearing Fault Codes

1. Connect the appropriate harness from CCU Diagnos-
tic Test Kit to the diagnostic port.
2. Start the engine; then press and hold the shift button
for 5 seconds.
 NOTE: Two quick flashes of the service icon indi-
cate the codes have been cleared.
Testing Oil Level Sensor
The oil level sensor is a magnetic switch. Its operation is
based on a magnet located in the float. The switch
located in the stem of the sending unit is positioned
through the hole in the float. When the float drops to the
lower part of the stem, the magnet closes the electrical
contacts (located in the stem) allowing the current to pass
on to the warning light.
FZ001D
CCU Diagnostic Codes
Cause
Headlight and Hand Warmer (Red/
Black) circuit current greater than 20
Amps.
Headlight and Hand Warmer (Red/
Black) circuit shorted to ground.
Gauge, Taillight, and APV Servo
Power (Red/Blue) circuit current
greater than 20 Amps.
Gauge, Taillight, and APV Servo
Power (Red/Blue) circuit shorted to
ground.
gear case shifting.
Wires to reverse actuator damaged or
shorted to ground.
Tachometer signal wire shorted to
ground.
Gear position switch damaged or
unplugged - reverse actuator not
working correctly.
Internal CCU temperature over 105° C
(221° F).
(2-Stroke)
5
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