4.24
ELECTRONIC FUEL INJECTION
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 Tester / Regulator
The throttle position sensor (TPS) reading can be checked by
using the TPS Tester Adapter Harness (PU-47082) and TPS
Tester Regulator (4010264).
Set-up the TPS Tester Adapter Harness (PU-47082), according
to the instructions that accompanied the tester. Make sure the 9
Volt battery is new.
As mentioned in the instructions included with the tester, be sure
the TPS Tester Adapter Harness is set up along with the TPS
Tester Regulator (4010264).
NOTE: If your dealership sells Polaris snowmobiles,
you may already have this regulator from TPS Tester
Kit (2201519). If you do not have this regulator, you
must order one from SPX at 1-800-328-6657.
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 Connector
Throttle Body
Stop Screw
(Factory Set)
Yellow
(Output)
Blue
(Input)
Black
(Ground)
TPS
DO NOT ADJUST
PU-47082
TPS Tester
Use NEW
9V battery
4010264
TPS Tester Regulator
Typical Tester
9 Volt Battery
Regulator
Cable Ties
Test Ports
Install Regulator
R = RED
P = PINK
Bk = BLACK
Y = YELLOW
Set-up
Connections Here
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