Efi Sensors/Components - Arctic Cat HDX CREW 2017 Service Manual

3. Connect the black tester lead to battery ground.
4. Using the red tester lead, contact each end of the fuse
holder connector terminals individually.
5. The meter must show battery voltage from one side
of the connector terminal ends.
 NOTE: Battery voltage will be indicated from only
one side of the fuse holder connector terminal; the
other side will show no voltage.
NOTE: When testing the HI fuse holder, the head-

light OFF/HI/LO switch must be in the HI position;
when testing the LIGHTS fuse holder, the headlight
dimmer switch can be in either the HI or the LO posi-
tion.
 NOTE: If the meter shows no battery voltage, trou-
bleshoot the battery, switches, power distribution
module, or the main wiring harness.
RELAYS
The 4-pin relays are identical plug-in type located on the
power distribution module. Relay function can be
checked by switching relay positions. The 4-pin relays
are interchangeable.

EFI Sensors/Components

FUEL INJECTOR
Component data can be tested using the CATT II. Utilize
the Test screen.
Voltage
Remove the connector from the fuel injector. Place the
red meter lead to the orange wire and black meter lead to
ground. With the ignition switch in the on position the
meter must read battery voltage.
Resistance
With the connector still removed from the injector, place
the red meter lead to either terminal; then connect the
black tester lead to the other terminal. Reading is typi-
cally 9.78-10.82 ohms.
NOTE: If voltage is not present, troubleshoot the

battery, connector pins, wiring harness, fuses, or
relay. If resistance is not present or largely out of
specification, replace the injector.
CRANKSHAFT POSITION (CKP)
SENSOR
Resistance
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to the brown wire; then
connect the black tester lead to the white wire. The
meter reading must be 104-156 ohms.
AC Voltage
 NOTE: The battery must be at full charge for these
tests.
1. Set the meter selector to the AC Voltage position.
2. Connect the red tester lead to the brown wire; then
connect the black tester lead to the white wire.
3. Start the engine.
4. The meter reading must be approximately 1.8 volts
or more.
OXYGEN (O2) SENSOR
Component data can be retrieved using the CATT II. Uti-
lize the Sensor Data screen.
The Oxygen Sensor (O2 Sensor) is located in the exhaust
pipe.
NOTE: When testing the resistance of the sensor's

heater, the engine/exhaust pipe must be at room tem-
perature (65-75° F) or inaccurate readings will occur.
1. Open the cargo box; then remove the seat, air filter
cover, and air filter.
2. Remove the backrest and seat base.
3. Disconnect the sensor.
HDX360
 NOTE: For this test, the meter must be in OHMS
position.
4. On the sensor side of connector, connect the black
(negative) test lead to one white wire pin; then connect
the red (positive) test lead to the other white wire pin.
Readings should be between 6.7 and 10.1 ohms.
NOTE: If the meter does not read as specified,

replace the sensor.
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