Efi Sensors; Speed Sensor - Arctic Cat 2014 XC 450 Service Manual

3. The meter reading must be within specification.
 NOTE: If the meter does not show as specified,
replace ignition coil.
Spark Plug Cap
1. Connect the red tester lead to one end of the cap;
then connect the black tester lead to the other end of
the cap.
2. The meter reading must be within specification.
 NOTE: If the meter does not read as specified,
replace the spark plug cap.

EFI Sensors

CRANKSHAFT POSITION (CKP)
SENSOR
To test the CKP sensor, see Stator Coil/Crankshaft Posi-
tion (CKP) Sensor in this section.
OXYGEN (O2) SENSOR
The sensor is located in the exhaust pipe.
1. On the right side of the ATV, unplug the connector.
2. On the sensor side of connector, connect the black
(negative) test lead to one white wire pin; then con-
nect the red (positive) test lead to the other white
wire pin.
3. With the meter in the OHMS position, the reading
should be between 6.7-10.1 ohms.
NOTE: If the meter does not read as specified,
replace sensor.
MANIFOLD ABSOLUTE PRESSURE
(MAP) SENSOR/INLET AIR
TEMPERATURE
NOTE: Preliminary checks may be performed on
this component using the diagnostic mode on the
LCD gauge (see EFI Diagnostic System in this sec-
tion)
1. Disconnect the MAP/IAT connector from the sensor
located on top of the throttle body.
2. Select DC Voltage on the tester and turn the ignition
switch to the ON position.
3. Connect the black tester lead to the black/pink wire
and the red tester lead to the orange/blue wire. The
meter should read 4.5-5.5 DC volts. If the meter does
not read as specified, check the ECM connector or
AR603D
wiring.
4. Connect the MAP/IAT to the harness; then using
MaxiClips, connect the red tester lead to the brown/
white wire and the black tester lead to the black/pink
wire. With the engine running at idle speed, the
meter should read approximately 2.5 DC volts (MAP
sensor signal).
5. Connect the red tester lead to the green/red wire.
With the engine at idle and at room temperature
(approximately 68° F), the meter should read
approximately 2.9 DC volts.
NOTE: If the meter does not read as specified,
replace the sensor.

Speed Sensor

NOTE: Preliminary checks may be performed on
this component using the diagnostic mode on the
LCD gauge (see EFI Diagnostic System in this sec-
tion)
1. Set the meter selector to the DC Voltage position.
2. With appropriate needle adapters on the meter leads,
connect the red tester lead to the voltage lead (V); then
connect the black tester lead to the ground lead (G).
KC518A
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