4
9926813 R04 - 2013-2016 RZR 570 Service Manual
© Copyright Polaris Industries Inc.
4.29
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.
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:
TPS Resistance Readings
PINS
THROTTLE
POSITION
RESISTANCE
2 -
GND
——— ∞
1 - 2 Closed
4kΩ - 5kΩ (reference)
1 - 2
Open
1150Ω - 1250Ω
(reference)
1 - 3
———
4kΩ - 6kΩ
FUEL SYSTEM
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