Polaris 850 PRO-RMK 155 2.6" QD 2021, Руководство пользователя

Страница: 372 / 747

4.16
9850060 R02 - 2020-2021 850 AXYS™ Long Track Snowmobile Service Manual
© Copyright Polaris Inc.
THROTTLE POSITION SENSOR (TPS)
THROTTLE POSITION SENSOR (TPS)
OVERVIEW
IMPORTANT
The throttle position sensor (TPS) is set at the time of
throttle body manufacture. TPS adjustments should
NEVER be made.TPS voltage specifications should be
viewed using digital wrench but never adjusted.
The Throttle Position Sensor (TPS)
q
is a contact-Less
Hall-Effect type sensor mounted to the MAG (right) side
of the throttle body. The internal components of the
sensor are connected to the throttle shaft. The TPS
output signal changes as the throttle plates are opened
and closed by the operator. The ECU uses this signal to
determine the position of the throttle plates.
The TPS is set at the factory based on a throttle body idle
air gap flow specification. Do
NOT make any
adjustments to the TPS as each TPS is permanently set.
NOTICE
Follow these guidelines whenever working with the
TPS:
• Use Digital Wrench® when checking the TPS voltage.
Do not use any other diagnostic tool.
• Disconnect throttle cable from the throttle lever. If the
TPS idle voltage changes, the throttle cable is too
tight. Readjust throttle cable.
• Verify the throttle cable is not pulling on the throttle
plate cam. Turn the throttle cable in-line adjuster
clockwise to loosen the cable. If the cable continues to
pull on the throttle plate cam, readjust the throttle cable
threaded barrel on the throttle body.
• All engine management sensors/switches must be
connected to obtain accurate TPS voltage readings.
• Use a fully charged 12VDC battery to power the
engine management system.
THROTTLE POSITION SENSOR (TPS)
TESTING
Use the following tests to determine if further diagnostic
testing is required.
TEST 1: TPS Idle Voltage
1. Connect Digital Wrench to the vehicle. Confirm the
throttle lever free play is set to specification, and the
throttle cable is not pulling on the throttle plate cam.
2. Click on the DATA GRID ICON to view the current
sensor readings.
3. Locate the TPS VOLTAGE reading and compare it to
the specification for the vehicle. Verify SENSOR
REFERENCE VOLTAGE is 4.9-5.0 VDC.
4.
DESCRIPTION SPEC. UNITS
TPS Voltage 0.86 Volts
Exhaust Temperature 32.0 Deg F.
Intake Air Temperature 72.7 Deg F.
Engine Temperature 70.5 Deg F.
Barometric Pressure 29.1 InHg
Chassis Voltage 0.00 Volts
Vehicle Speed
0 MPH
Sensor Reference Voltage 4.990 Volts
TPS IDLE BASE SETTING VOLTAGE
MODEL SPECIFICATION
850 Patriot 0.86 +/- 0.05 VDC
TEST 2: TPS Signal Sweep
Utilize the sensor graph function in Digital Wrench to
view the TPS voltage return signal as a graph.
Slowly move the throttle lever in and out. The return
signal line should change without any erratic jumps or
gaps.
ENGINE ELECTRICAL