Engine Temperature Sensor; General Information; Engine Temperature Sensor Test; Engine Temperature Sensor Replacement - Polaris Ranger 500 2x4 2007 Service Manual

ELECTRONIC FUEL INJECTION
• Set up the TPS Test Adapter Harness 2201519. Verify
that the 9 volt battery is new.
TPS Tester Adapter
Harness- 2201519
500 EFI ONLY
Apply RED meter lead to the "R" port and
BLACK meter lead to the "Y" port of TPS
Tester Harness to obtain correct reading.
• (NOTE: Applies to 500 EFI ONLY) Attach the RED
meter lead to the "R" port and BLACK meter lead to
the "Y" port of the TPS Tester Harness 2201519, verify
the voltage output of the TPS reads 1.10 - 1.14 vdc.
• If it does not read 1.10 - 1.14 vdc, loosen the screws
holding the TPS to the throttle body. Rotate TPS until
voltmeter reads 1.10 - 1.14 vdc.
• Retighten TPS mounting screws to 17.7 in lbs.
(2 ± 0.5 Nm) and verify the voltage did not change.

ENGINE TEMPERATURE SENSOR

General Information

Mounted on the cylinder, the engine temperature sensor
measures coolant temperature. The engine temperature sensor
is a Negative Temperature Coefficient (NTC) type sensor, as the
temperature increases the resistance decreases.
4.40
Should Read: 1.10 - 1.14 vdc
1.12v
Coolant passes through the cylinder and by the sensor probe,
varying a resistance reading which is relayed to the ECM. This
signal is processed by the ECM and compared to it's
programming for determining the fuel and ignition
requirements during operation. The ECM also uses this signal to
determine when to activate the fan during operation. If for any
reason the engine temperature sensor circuit is interrupted, the
fan will default to "ON".

Engine Temperature Sensor Test

Polaris dealers can test the sensor by using the Digital Wrench
Diagnostic Software (dealer only). Refer to the Digital
™
Wrench User Guide for more information.
To measure the sensor using an ohmmeter, place the tester leads
on each terminal an read the resistance with the sensor at an
°
ambient temperature of 68
Resistance Readings
Temperature °F (°C)
68 °F (20 °C)

Engine Temperature Sensor Replacement

1. Disconnect sensor from engine harness.
2. Using a wrench, remove and replace the sensor, applying
a light coating of thread sealant to aid installation.
3. Torque the sensor to 18.5 ft. lbs. (25 Nm).
°
F (20 C).
Resistance
37.3K - 39.2K Ω
™