Coolant Temperature Sensor - Arctic Cat Pantera 3000 Service Manual

Installing (3000)
1. Secure the ECM to the chassis using the existing four
nuts. Tighten securely; then press the connector into
the ECM and rotate the connector arm down until it
locks.
NOTE: Make sure the connector is clean and tight.

Apply dielectric grease to the connector seal.
2. Install the hood and access panels.
Removing (5000/9000)
1. Remove the left-side access panel; then remove the
quarter turn securing the lower console to the
left-side skid plate.
2. Remove the two wiring connectors from the ECM;
then remove the ECM mounting bracket from the
belt guard.
3. Remove the two torx-head screws securing the ECM
to the mounting bracket.
Installing (5000/9000)
1. Secure the ECM to mounting bracket using the exist-
ing two torx-head screws. Tighten securely.
2. Install the ECM with mounting bracket onto the rear
belt guard until it snaps into place.
3. Connect the two wiring connectors to the ECM.
4. Secure the lower console using the quarter turn; then
install the left-side access panel.
NOTE: Make sure all connectors are clean and

tight. Apply dielectric grease to all connector seals.
Removing (7000)
1. Remove both access panels; then remove the hood.
2. Remove the air intake assembly from the throttle
body and the radiator.
3. Press the retaining tabs on the ECM connectors in;
then rotate the connector arms up while will allow
the connectors to be released from the ECM.
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4. Remove the four cap screws and nuts securing the
ECM to the chassis.
Installing (7000)
1. Secure the ECM to the chassis using the existing four
nuts. Tighten securely; then press the two connectors
into the ECM and rotate the connector arm down
until it locks.
NOTE: Make sure all connectors are clean and

tight. Apply dielectric grease to all connector seals.
2. Install the air intake assembly to the throttle body
and the radiator.
3. Install the hood and access panels.
AIR TEMPERATURE SENSOR
This sensor detects air temperature entering the air
silencer and engine. The ECM sends current to this sen-
sor, and (depending on the temperature) the sensor will
pass a certain amount of current through the sensor to
ground. The ECM measures how much current passes
through the sensor to ground. From this measurement,
the ECM determines the air temperature and calculates
the fuel/air mixture ratio. Resistance will drop as the tem-
perature rises.
Removing
1. Disconnect the wiring harness from the air tempera-
ture sensor.
2. Using a flat-blade screwdriver, pry the sensor end to
end to remove it from the air silencer. Account for
two push pins.
NOTE: On 7000 models, the sensor is secured to the

air intake assembly using two screws.
Installing
1. Place the sensor into position in the air silencer and
secure with push pins.
NOTE: On 7000 models, secure the sensor using two

screws. Tighten securely.
2. Connect the wiring harness to the air temperature
sensor. Secure the sensor wires with cable ties so
they do not rub on any other components.

COOLANT TEMPERATURE SENSOR

This sensor detects coolant temperature. The ECM mea-
sures the current flow through the sensor to ground. From
this measurement, the ECM can determine the engine
coolant temperature and calculate the correct fuel/air
mixture ratio.
 NOTE: If the coolant temp rises above 105°C
(221° F) the temp light on the gauge will start to flash
and the engine will go into a fuel cut (surging) mode to
alert the rider of overheating. If the temp continues to
rise and exceeds 110°C (230° F) the temp light will be
on continuously. The fuel cut will not protect the
engine from overheating if the operator continues to
ride the snowmobile.
THROTTLE POSITION SENSOR
This sensor is a potentiometer (essentially, a resistor).
This sensor transforms the throttle-valve position into
output voltage to the ECM. In addition, the sensor detects
the opening or closing speed of the throttle valve and
feeds that rate of voltage change to the ECM.
 NOTE: The input from the throttle position sensor
is one of the main inputs for the ECM calculation of
fuel/air mixture ratio.
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