Yamaha 2016 Grizzly yf700gg, Service Manual, Page: 424 / 474

EPS (ELECTRIC POWER STEERING) SYSTEM (for EPS models)
9-69
EBS30287
EPS CONTROL UNIT’S SELF-DIAGNOSTIC FUNCTION
The EPS control unit is equipped with a self-diagnostic function. If this function detects a malfunction in
the EPS system, it lights the EPS warning light to alert the rider that a malfunction has occurred in the
system. Once a malfunction has been detected, it becomes stored in the EPS control unit memory in
the form of a fault code.
• The EPS warning light comes on when the main switch is turned to “
” (on), and then goes off once
the engine is started. If the warning light remains on or comes on after the engine is started, the EPS
system may be defective.
• The electrical circuit of the warning light can be checked by turning the main switch to “ ” (on). If the
warning light does not come on, the electrical circuit may be defective.
TIP
• If the engine is stopped using the engine stop switch and the main switch is in the “ ” (on) position,
the EPS warning light comes on to indicate that the power assistance for the steering is not function-
ing.
• If the steering usage is too heavy (i.e., excessive steering use when the vehicle is traveling at a slow
speed), the power assist is reduced to protect the EPS motor from overheating.
EBS30288
EPS WARNING LIGHT DURING NORMAL OPERATION
The EPS warning light comes on initially for 2 seconds after the main switch is turned to “ ” (on). How-
ever, the warning light remains on until the engine is started.
In addition, if a malfunction is detected while the warning light comes on initially, the warning light re-
mains on.
Furthermore, the warning light comes on whenever a malfunction has occurred.
TIP
The EPS system does not operate while the EPS warning light is on.
1
1. EPS warning light
a
b
c
d
f i
e
g
g
h
f
a. Main switch
b. EPS warning light (no malfunction detected) c. EPS warning light (malfunction detected)
d. “
” (off)