Arctic Cat Cougar Service Manual page 250

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12. Press the handlebar mounted throttle control
to the wide open (fast) position and measure the
voltage between pin No. 3 and pin No. 17 (Fig-
ure 5) of the diagnostic harness. The voltage
should be 3.8-4.2 VDC. If the voltage is more
than in Step 11, but is too low, make sure the
throttle cable is adjusted properly to permit the
throttle to open fully.
Throttle position sensor-1997 and 1998
models. Test the throttle position sensor (TPS),
with the engine not running.
1. Disconnect the electrical plug from the TPS
(Figure 14).
2. Use an ohmmeter to read the resistance be-
tween the terminals for the red and black wires.
Resistance should be 4250-6750 ohms.
3. With the throttle at idle, measure the resis-
tance between the black and white wires. Resis-
tance should be 722.5-977.5 ohms.
4. Open the throttle and measure the resistance
between the black and white wires again. Resis-
tance should be 4250-6750 ohms.
5. With the ohmmeter attached to the black and
white wires, move the throttle lever. The resis-
tance should change as the control is moved.
6. Make sure the ignition switch is OFF, then
connect the wiring harness to the terminal of the
throttle position sensor.
7. Attach the diagnostic harness as described in
this chapter.
8. Tum the ignition switch ON.
9. Measure voltage between pin No. 20 (Figure
5) of the diagnostic harness and ground. The
voltage should be 0.8 VDC at idle and 3.81-4.23
VDC at wide open throttle.
10. If the voltage measured at idle is incorrect,
adjust the idle speed screw to obtain correct
voltage reading.
11. If the voltage reading is incorrect at wide
open throttle after adjusting idle setting, attempt
to obtain desired voltage reading by adjusting the
throttle cable. If correct voltage reading is not
obtainable, replace the throttle body.
CHAPTER SEVEN
Coolant temperature sensor- To test the en-
gine coolant temperature sensor, make sure the
engine is not running and ignition is off.
1 A. If the sensor is installed, detach the electrical
connectors from the sensor (Figure 15).
lB. If the sensor is removed, put the sensor in a
container filled with water and measure the tern-
perature of the water.
2. Attach an ohmmeter to the sensor terminals
and measure the resistance of the unit.
3. Compare the measured resistance with the
values in Table 2. The temperature of the sensor
should be as indicated.
4. Models prior to 1997-The condition of the
coolant temperature sensor can also be checked
by measuring the voltage as follows.
a. Attach the diagnostic harness as described
in this chapter.
b. Tum the ignition switch ON.