Speed Sensor; Ignition Switch - Arctic Cat 2014 450 Service Manual

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).
3. Turn the ignition switch to the ON position.
4. The meter must show greater than 5.0 volts.
5. Leave the black tester lead connected; then connect
the red tester lead to the signal lead pin (S).
6. Slowly move the ATV forward or backward; the
meter must show 0 and 6 volts alternately.
 NOTE: If the sensor tests are within specifications,
the speedometer must be replaced (see Steer-
ing/Frame/Controls section - LCD Gauge).
To replace a speed sensor, use the following procedure.
1. Disconnect the three-wire connector from the speed
sensor; then remove the cap screw securing the sen-
sor to the sensor housing.
2. Remove the sensor from the sensor housing account-
ing for an O-ring.
90
3. Install the new speed sensor into the housing with
new O-ring lightly coated with multi-purpose grease;
then secure the sensor with the cap screw (threads
coated with blue Loctite #242). Tighten securely.

Ignition Switch

The ignition switch harness connects to the switch with a
three-pin connector. To access the connector, remove the
access panel in front of the handlebar.
VOLTAGE
 NOTE: Perform this test on the main harness con-
KC248A
nector.
1. Set the meter selector to the DC Voltage position.
2. Connect the red meter lead to the red/white wire;
then connect the black meter lead to ground.
3. Meter must show battery voltage.
 NOTE: If the meter shows no battery voltage, trou-
bleshoot the battery or the main wiring harness.
RESISTANCE
 NOTE: Perform this test on the switch harness
using the following procedure.
CD071
KC339D