Page 333 - Manual Oficina Polaris Sportsman 570 2014 a 2016

FUEL SYSTEM

ELECTRONIC THROTTLE CONTROL

ETC SERVICE PRECAUTION connector. Refer to the wire diagram for pin-out details. If
the ETC is faulty, the entire ETC assembly must be
CAUTION replaced.
Always disconnect power from the Electronic Throttle ETC REPLACEMENT
Control (ETC) before servicing.
1. Remove the seat and side panels.
Placing fingers or other body parts in the ETC while
power is connected may lead to injury. 2. Remove the airbox and breather box (if equipped).
3. Disconnect the wire harness from the ETC.

ETC OVERVIEW

NOTE 4
DO NOTattempt to service the ETC. The ETC is a non-
serviceable component and can only be tested using
Digital Wrench®. If the ETC is faulty, the entire
assembly must be replaced.

4. Remove the 4 bolts retaining the ETC housing to
intake .
5. Reverse these steps for installation. Torque the ETC
housing retaining bolts and intake boot clamp to
specification.
TORQUE
ETC Housing Retaining Bolts:
7 ft-lb (10 Nm)
Mounted to the intake, the ETC acts as an electronically Intake Boot Clamp:
controlled throttle body. The ETC controls engine throttle 35 in-lb (4 Nm)
operation to provide the proper air/fuel ratio needed for
engine operation at all RPM ranges. The ETC controls
engine RPM based off input provided by the Throttle
Control Sensor (TCS) and Electronic Control Unit (ECU). ETC LEARN PROCEDURE

IMPORTANT
ETC TEST
This procedure MUST be performed on the vehicle
Never attempt to disassemble the ETC assembly. whenever the ECU is replaced or reflashed or the
Warranty is void if the end cover is opened or tampered throttle body is replaced.
with in any way.
All operating and control functions within the ETC are
pre-set. No internal servicing or adjustments may be 1. After the reflash / ECU replacement / throttle body
performed. If a problem is encountered, and you change, leave the key on (engine not running) for 60
determine the ETC to be faulty, contact the Polaris seconds. Do NOTcrank the engine during this time.
Service Department for specific handling instructions. Do 2. Turn the key off and wait 3 minutes. During this time,
not replace the ETC under warranty without factory the ECU will write values into memory and then
authorization. completely shut down.
Use Digital Wrench® to perform all troubleshooting of 3. Turn key back on and start the vehicle. The vehicle
this component. Use a Volt Ohm meter to test the vehicle should operate normally.
harness continuity between the ETC connector and ECU

9926803 R06 - 2014-2016 Sportsman 325 / ETX / 450 HO / 570 Service Manual 4.17
© Copyright Polaris Industries Inc.