ELECTRICAL
10.25
FAN CONTROL SWITCH
OPERATION TEST
The fan is controlled through the ECM and thermistor.
Refer to “Engine Temperature Controller” for fan
operation information.
Also refer to “COOLANT
TEMPERATURE SENSOR (THERMISTOR) TEST”
for Fan ON and Fan OFF readings on the previous
page.
ELECTRONIC THROTTLE
CONTROL (ETC) SWITCH
The Electronic Throttle Control (ETC) system is
designed to stop the engine of an ATV in the event of
a mechanical problem with the throttle mechanism.
The ETC switch is mounted independently of the
throttle actuator lever inside the throttle block
assembly. This is a
normally closed
switch, and is
held in the open position (contacts are separated (as
shown below) by throttle cable tension. The contacts
are “open” during normal operation regardless of
throttle lever position. In the event of a mechanical
problem in the throttle mechanism (cable tension is
lost), the switch contacts close, connecting the CDI
black wire to ground, which prevents ignition spark.
This is the same as turning the key or engine stop
switch “OFF”.
Test the ETC switch at the harness connector.
NOTE:
Adjust throttle cable freeplay (ETC switch) and make
sure throttle mechanism is functioning properly before
testing the switch. Refer to Maintenance Chapter 2
for cable adjustment procedure
.
ETC OPERATION TEST
Remove throttle block cover by carefully releasing all
tabs around edge of cover.
Place transmission in neutral and apply parking
brake.
Start engine and open throttle lever slightly until
engine RPM is just above idle speed.
Hold throttle cable with fingers at point “A” as
shown below and release throttle lever. If the ETC
system is functioning properly, the engine will lose
spark and stop.
Switch contacts are
open
during normal op-
eration
A
ETC switch contacts
are
closed
in a fault
condition (throttle cable
slack).
Electronic Throttle Control (ETC) Switch
(Composite Throttle Housing)
Brn
Blk
Brn
CDI UNIT
Содержание 2004-2005 Sportsman 6x6
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