4.36
9929422 R02 - 2017-2019 ACE 900 Service Manual
© Copyright Polaris Industries Inc.
ELECTRONIC THROTTLE CONTROL (ETC)
ETC OVERVIEW
Mounted to the intake plenum, the ETC
q
acts as an
electronically controlled throttle body. The ETC controls
engine throttle 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 Pedal Position Sensor (PPS) and Electronic Control
Unit (ECU).
NOTE
DO NOT attempt 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.
ETC TEST
Never attempt to disassemble the ETC assembly.
Warranty is void if the end cover is opened or tampered
with in any way.
All operating and control functions within the ETC are
pre-set. No internal servicing or adjustments may be
performed. If a problem is encountered, and you
determine the ETC to be faulty, contact the Polaris
Service Department for specific handling instructions. Do
not replace the ETC without factory authorization.
Use Digital Wrench® to perform all troubleshooting of
this component. Use a Volt Ohm meter to test the vehicle
harness continuity between the ETC connector and ECU
connector. Refer to the wire diagram for pin-out details. If
the ETC is faulty, the entire ETC assembly must be
replaced.
ETC REPLACEMENT
1. Remove the cargo box access panel.
2. Remove the ETC connector
q
and remove the wire
harness from ETC retainer clip
w
.
3. Loosen the clamp
e
retaining the intake boot to the
ETC. Remove the boot from the ETC.
4. Remove the four bolts
r
retaining the ETC housing
to intake plenum.
5. Remove the ETC housing and gasket
t
from intake
plenum.
FUEL SYSTEM
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