Clean Fire Electrical; Iq Throttle Position Sensor; Iq Temperature Light; Lamp Circuit Test - Polaris 340 CLASSIC 2006 Manual

CLEAN FIRE ELECTRICAL

IQ THROTTLE POSITION SENSOR

When the sensor is inoperative or disconnected the system will
switch to a LIMP HOME" mode. Limp Home mode reduces
performance to a default value and monitors other sensors.

IQ TEMPERATURE LIGHT

The TEMP light (A) is controlled by the CDI using water
temperature input from the water temp sensor (B), throttle
position input (TPS) and RPM input. The water temp sensor is
a thermistor. As the temperature increases the resistance
decreases. Each input has thresholds programmed into the CDI
for when to illuminate the TEMP light according to coolant
temp, throttle position (TPS) and engine speed (RPM).
For example, the TEMP light will come on at idle (under 2000
RPM, 0% throttle) and coolant temperature of 230_F (110_C).
Timing retard initiates at 176_F and a TPS of over 80-100%.
For more severe conditions, the engine fail-safe is turned on at
high TPS input and high temps.

LAMP CIRCUIT TEST

1. Ground the Black/White wire from the Temperature light.
2. Run the machine, and light should be on.

THERMISTOR SENSOR TEST

At room temperature 68_ F (20_ C) the Thermistor should
read 2190 to 2575 Ω. See chart below for other temperature
resistances.
Table 13-10: IQ Temperature Sensor
Resistance Range
TEMPERATURE _F (_C)
68 (20)
149 (65)
203 (95)
239 (115)
275 (135)
CAUTION
I
F ATTEMPTING TO HEAT THE SENSOR
. N
TER BATH EVER SUBJECT THE SENSOR TO AN OPEN
FLAME TO ATTEMPT TO CLOSE THE CONTACTS AS SENSOR
.
DAMAGE MAY RESULT
ELECTRICAL
Ω RESISTANCE RANGE
2189 - 2675
455 - 566
197 - 240
120 - 147
77 - 94
, -
HEAT ONLY IN A WA
13.17