Throttle Position Sensor (Tps); Operation Overview; Tps Resistance Tests; Tps Tester / Regulator - Polaris 2014 Sportsman 570 EF Service Manual

THROTTLE POSITION SENSOR (TPS)

Operation Overview

The throttle position sensor (TPS) is used to indicate
throttle plate angle to the ECU. Mounted on the throttle
body and operated directly off the end of the throttle
shaft, the TPS works like a rheostat, varying the voltage
signal to the ECU in direct correlation to the angle of the
throttle plate. This signal is processed by the ECU and
compared to the internal pre-programmed "maps" to
determine the required fuel and ignition settings for the
amount of engine load.
The correct position of the throttle body stop screw
is established and set at the factory.
DO NOT loosen the throttle body stop screw or alter
its position in any manner. The stop screw controls
the air flow calibration of the throttle body. If the
stop screw is repositioned or adjusted, the throttle
body assembly must be replaced.
9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual

TPS Resistance Tests

The TPS is a non-serviceable item. If it is faulty, it must
be replaced. It can be tested using the following method:
With the test leads connected and the meter set to the
ohms scale, observe the reading at the following pin
locations of the TPS:
PINS
2 -
GND
1 - 2
1 - 2
1 - 3

TPS Tester / Regulator

The TPS reading must be checked by using Digital
Wrench Diagnostic Software.

TPS Replacement

NOTE: The correct position of the TPS angle on the
throttle body is established and set at the factory. If
the TPS is replaced or has been loosened it must be
repositioned to obtain the proper voltage reading.
1. Disconnect the negative (-) battery cable.
2. Remove the seat, air box and PVT ducting, andright
side panel.
© Copyright 2013 Polaris Sales Inc.
FUEL SYSTEM - GENERAL
TPS Resistance Readings
THROTTLE
RESISTANCE
POSITION
———
¥
4kΩ - 5kΩ (reference)
Closed
1150Ω - 1250Ω
Open
(reference)
———
4kΩ - 6kΩ
4
4.29