Page 691 - Manual Oficina Polaris Sportsman 570 2014 a 2016

ELECTRICAL

COOLING SYSTEM COMPONENTS

FAN CONTROL CIRCUIT OPERATION FAN MOTOR CURRENT DRAW TEST
Power is supplied to the fan via the Orange/Black wire A current draw test will provide a good indication of fan
when the relay is ON. The ground path for the fan motor motor condition. A worn or damaged fan motor will draw
is through the Brown harness wire. Refer to “RELAYS” more current, which causes a reduction in blade speed
later in this chapter for more information on fan functions. and reduced cooling.

CAUTION
Keep hands away from fan blades during operation.
Serious personal injury could result.

NOTE
The fan may not function or operation may be delayed if
coolant level is low or if air is trapped in the cooling
system. Be sure cooling system is full and purged of air.
Refer to Maintenance Chapter 2 for cooling system
information.

FAN CONTROL BYPASS TEST
1. Disconnect harness from coolant temperature
sensor on engine.
2. With the ATV in “Park” and with the parking brake on,
turn the ignition key and engine stop switch “ON”.
Start the engine. The fan should start running. 1. Disconnect the harness from the coolant sensor.
3. If the fan does not run or runs slowly, check the fan 2. Connect a DC ammeter in-line on the fan switch
motor wiring, ground, motor condition for proper harness wires. See illustration(An inductive clamp is
operation (refer to “FAN MOTOR CURRENT DRAW” required).
in this section). Repair or replace as necessary. If the
fan runs with the sensor harness disconnected, but 3. Be sure fan blade is free to rotate.
will not turn on when the engine is hot, check the 4. Turn ignition key and engine stop switch to “ON”
coolant temperature sensor, wires, grounds, position. Read the current draw on ammeter with fan
connector terminals. running.
5. ( Direct 12 Vdc to fan required)
6. If the fan motor draws more than 10 Amps, replace
the motor.
d
Fan Motor Current Draw:
Should Be Less Than 10 Amps

NOTE
11
Fan motor current draw specification may vary.

9926803 R06 - 2014-2016 Sportsman 325 / ETX / 450 HO / 570 Service Manual 11.29
© Copyright Polaris Industries Inc.