Hisun HS 500 Owner's Manual page 78

But if there is no inspection or maintenance as
stated time period during in use of EPS, it may
cause EPS system work abnormally or spare parts
in EPS system are damaged abnormally.
When EPS system work wrong or get malfunction,
the malfunction warning and fault code can be
indicated on meter.
■ Malfunction assortment：

During long time continuous fast steering,
especially when ambient temperature is very
high, it may cause ECU radiator of high
temperature, and at this time ECU can get
through detection temperature sensor's signal
to issue ECU over-heating failure warning's
fault code to meter. Meanwhile, EPS system
fault indicator light is lighten.

When ECU detected 1# steering torque
sensor or 2# steering torque sensor had fault,
then it will indicate 1# steering torque sensor
fault or 2# steering torque sensor fault code to
dash board.
Meanwhile, EPS system fault indicator light is
lighten.
When ECU detected the storage batter's
voltage is lower than 9VDC through sensor, it
will indicate the fault code of storage battery
voltage low to dash board. Meanwhile, EPS
system fault indicator light will be lighten.

When ECU detected motor is out of work
through sensor, it will indicate fault code of
dynamic motor without power warning to dash
board. Meanwhile, EPS system fault indicator
light is lighten.

When ECU detected the speed sensor had
fault, it will indicate vehicle speed sensor fault
code to dash board. Meanwhile, EPS system
fault indicator light is lighten.
ELECTRIC POWER STEERING SYSTEM

When ECU detected its own fault and can not
be work normally, it will indicate EUC stop
working code to dash board. Meanwhile, EPS
system fault indicator light is lighten.
■ To drive UTV at every time, need to do daily
inspection of EPS system
Before drive UTV at every time, need to do daily
inspection as following steps.
Check steering system's mechanical part of
1.
each part's interval.

Check steering wheel is loosened or not.
Move steering wheel and Check whether is loosen
or with squeak through axis direction and
horizontal direction. If defection found, repair or
replace it.
Steering wheel's range of free clearance is：

0-15mm（0-0.59in.）
If the free clearance is over range, check spare
parts as below, any defection found, replace it. Any
defection found, replace it.

Steering tie rod ball head is whether to wear
down。

Swizzle ball of knuckle wear out or not

Gear rack on steering wheel wear out or not

Spline on steering drive shaft is loosen or not
 Between input and output shaft's reducer
whether had idle running.

The steering system checking in steering
process:
Turn the steering wheel from left to right and right
to left .it required smoothly and no blocking
allowed.
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