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Control functions
23
ESU10513
Coolant temperature warning
indicator “”
If the engine overheats, the coolant tempera-
ture warning indicator and the warning light
come on. When this occurs, stop the engine
immediately and allow the engine to cool
down, and then check the coolant level in the
coolant reservoir. (See page 84 for checking
procedures.)
RS90P / RS90PLT / RST90PGT
RST90
NOTICE
ECS00041
Do not continue to operate the engine if it
is overheating.
ESU13812
Electric power steering warning
indicator “EPS” (RS90P /
RS90PLT / RST90PGT)
The electric power steering warning indicator
comes on when the key is turned to the on po-
sition, and then goes off once the engine is
started. If the warning indicator remains on or
comes on after the engine is started, the EPS
system may not be working correctly. When
this occurs, have a Yamaha dealer check the
EPS system.
TIP
If the steering load is too heavy (i.e., exces-
sive steering use when the snowmobile is
traveling at a slow speed), the power assist is
reduced to protect the EPS motor from over-
heating.
ESU13771
Self-diagnosis device
This model is equipped with a self-diagnosis
device for various electrical circuits.
If a problem is detected in any of those cir-
cuits, the warning light and the engine trouble
warning indicator flash, and an error code dis-
plays (RS90P / RS90PLT / RST90PGT) or
flashes slowly (RST90) in the meter display.
Note the error code, and then have a Yamaha
dealer inspect the snowmobile as soon as
possible. NOTICE: Do not continue to oper-
1. Coolant temperature warning indicator “”
2. Warning light “”
1. Coolant temperature warning indicator “”
2. Warning light “”
1. Electric power steering warning indicator
“EPS”
U8HV10E0.book Page 23 Monday, May 16, 2011 1:15 PM