4.31
ELECTRONIC FUEL INJECTION
4
9924125 - 2013 RANGER RZR / RZR S / RZR 4 Service Manual
© Copyright 2012 Polaris Sales Inc.
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.
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 t
he meter set to the
ohms scale, observe the reading at the following pin
locations of the TPS:
TPS Tester / Regulator
The TPS reading can be checked by using the Throttle
Position Sensor (TPS) Tester (2201519-A).
Set-up the TPS Tester Wire Harness (PU-47466) and TPS
T
ester Regulator (547927) according to the instructions
that accompanied the tester. Make sure the 9 Volt battery
is new.
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.
Stop Screw
(Factory Calibrated)
DO NOT ADJUST
TPS Resistance Readings
Pins Throttle Position Resistance
2 - GND -----
1 - 2 Closed 4k - 5k(r
eference)
1 - 2 Open
1150 - 1250
1 - 3 ----- 4k6k
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