Arctic Cat 2013 Prowler XT, Service Manual

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3. Slowly increase RPM. The voltage should increase
with the engine RPM to a maximum of 15.5 DC
volts.

NOTE: If voltage rises above 15.5 DC volts, the reg-
ulator is faulty or a battery connection is loose or cor-
roded. Clean and tighten battery connections or
replace the regulator/rectifier. If voltage does not rise,
see Stator Coil/Crankshaft Position (CKP) Sensor -
Voltage in this section. If charging coil voltage is nor-
mal, replace the regulator/rectifier.
Headlights
The connectors are the four 2-prong ones secured to the
headlight bulbs (two on each side).
VOLTAGE

NOTE: The low beams are the outside bulbs (black
and white wires) and the high beams are the inside
bulbs (yellow and black wires). Always connect the
black tester lead to the black wires. The ignition
switch must be in the ON position.
1. Set the meter selector to the DC Voltage position.
2. Set the light switch to the correct position for the
affected light; then connect the black tester lead to
the black wire using a MaxiClip.
3. Connect the red tester lead to the yellow wire (high
beam) or white wire (low beam) using a MaxiClip.
The meter must show battery voltage.

NOTE: If battery voltage is not shown in any test,
inspect the LIGHTS fuse on the power distribution
module, headlight switch, ignition switch, switch con-
nectors, or wiring harness.
Taillight-Brakelight
VOLTAGE (Taillight)

NOTE: Perform this test at the socket end of the tail-
light-brakelight harness (pigtail). The ignition switch
must be in the ON position and either high beam or
low beam selected on the light switch.
1. Set the meter selector to the DC Voltage position.
2. Connect the black tester lead to the black wire; then
connect the red tester lead to the white wire. The
meter should show battery voltage.
3. With the ignition key in the LIGHTS position, the
meter must show battery voltage.

NOTE: If battery voltage is not shown and the head-
lights are illuminated, inspect the three-wire connec-
tor in the left-rear canopy tube at the juncture of the
canopy tube and lower frame. If battery voltage is
shown on the meter, replace the bulb.
VOLTAGE (Brakelight)

NOTE: Perform this test at the socket end of the tail-
light/brakelight harness (pigtail). The ignition switch
must be in the ON position.
1. Set the meter selector to the DC Voltage position.
2. Connect the red tester lead to the red/blue wire; then
connect the black tester lead to the black wire.
3. With the brake applied, the meter must show battery
voltage.

NOTE: If the meter shows no voltage, inspect the 10
amp ignition (IGN) fuse, brakelight switch, wiring har-
ness, or connectors.
Ignition Timing
The ignition timing cannot be adjusted; however, verifying
ignition timing can aid in troubleshooting other components.
To verify ignition timing, use the following procedure.

NOTE: To check ignition timing, the seats and cen-
ter console must be removed.
1. Attach the Timing Light to the spark plug high ten-
sion lead; then remove the timing inspection plug
from the left-side crankcase cover.
2. Start the engine and using the RPM function on the
speedometer/tachometer, run at 1500 RPM; ignition
timing should be 10° BTDC.
3. Install the timing inspection plug.
If ignition timing cannot be verified, the rotor may be dam-
aged, the key may be sheared, the trigger coil bracket may
be bent or damaged, or the ECM may be faulty.
ECM Error Codes
(XT/XTZ)
If a sensor fails or an out-of-tolerance signal is sensed by
the ECM, an error code will be generated by the ECM.
This will result in the analog needle swinging full scale.
The EFI icon will flash.
To read the error code(s), use the following procedure.
1. Make sure the ignition switch is in the OFF position;
then remove the seats.
2. Locate the diagnostic plug next to the PDM; then
remove the black rubber cap.