Arctic Cat 450 2010 Service Manual page 84

FOR ARCTIC CAT ATV DISCOUNT PARTS CALL 606-678-9623 OR 606-561-4983
3. The meter must show battery voltage.
NOTE: If the meter shows no battery voltage,
troubleshoot the battery, fuse, or the main wiring
harness.
NOTE: If the meter shows battery voltage, the
main wiring harness is good; proceed to test the
switch/component, the connector, and the switch
wiring harness for resistance.
RESISTANCE (Switch Connector)
NOTE: The brake lever must be compressed for
this test.
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to one black wire; then
connect the black tester lead to the brown wire.
3. When the lever is compressed, the meter must
show less than 1 ohm.
NOTE: If the meter shows more than 1 ohm of
resistance, replace the switch.
www.mymowerparts.com
Back
FI489
FI490
Manual
Table of Contents
Engine Coolant
Temperature (ECT)
Sensor
1. Connect the meter leads (selector in OHMS posi-
tion) to the sensor terminals.
2. Suspend the sensor and a thermometer in a con-
tainer of cooking oil; then heat the oil.
NOTE: Neither the sensor nor the thermometer
should be allowed to touch the bottom of the con-
tainer or inaccurate readings will occur. Use wire
holders to suspend the sensor and thermometer.
! WARNING
Wear insulated gloves and safety glasses. Heated oil
can cause severe burns.
3. On the ECT sensor when the temperature reaches
60° C (140° F), the meter should read approxi-
mately 700 ± 40 ohms.
4. On the ECT sensor when the temperature reaches
90° C (194° F), the meter should read approxi-
mately 200 ± 15 ohms.
5. On the ECT sensor when the temperature reaches
120° C (248° F), the meter should read approxi-
mately 111 ± 7 ohms.
6. If the readings are not as indicated, the sensor
must be replaced.
7. Install the sensor and tighten securely.
8. Connect the leads.
Fan Motor
The connector is the black two-prong one located
above the oil cooler/radiator.
NOTE: The ignition switch must be in the ON
position.
RESISTANCE
(Fan Motor Connector)
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to the red wire; then
connect the black tester lead to the black wire.
Section
Table of Contents
5
5-5
Next