Relays - Polaris A12MH46AX Service Manual

RELAYS

Operation
The relays, located under the front storage box, assist with
component operation such as the fan, fuel pump, etc.
The fan relay, controlled by the ECU, operates the fan.
(Carbureted model also utilizes a fan relay)
The ECU relay, controlled by the key switch, operates the
ECU
The Ignition Coil and Fuel Pump relay, controlled by the
ECU, turns on power for components such as the fuel
pump, injectors, etc.
FAN RELAY
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10-amp breaker protected,
Red (EFI / Carb)
unswitched FAN power supply.
Y/B - Fan 'ON' Command.
Yellow /Black (EFI)
Ground is supplied by the ECU,

closing the relay to turn on the

fan.
Brown (Carb)
BN - Ground
Key 'ON' 12 Vdc power supply,
switched on by the key and LH
Red / White (EFI / Carb)
control switches, enables
power to relay.
Orange / Black (EFI) O/B - Fan 12 Vdc supply,

switched on by the ECU,
 enables power to fan. 
Red / Black (Carb) R/B - 12 Vdc to fan switch
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9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
ECU RELAY
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KEY-ON Battery power supply,
Red/White switched on by the key and LH control
switches, enables power to relay.
Relay "ON" command. The ECU
supplies a ground which closes the
Gray/Black
relay, supplying power to run the fuel
pump, injectors, etc.
Fused 15-amp, unswitched battery
Red power IN supply for EFI component
operation.
EFI power output. 'ON' when ECU
sends a signal on the GRY/W wire,
Red/Black closing the relay. Supplies 15-amp
power for ECU-operation of EFI
components.
IGNITION COIL/FUEL PUMP RELAY
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Fused 15A power supply, switched on
Orange/Green by the key and LH control switches,
enables power to relay.
Relay "ON" command. The ECU
supplies a ground which closes the
Gray/White
relay, supplying power to run the fuel
pump, injectors, etc.
Fused 20-amp, switched battery power
Red/White
IN supply for EFI component operation.
Power output. 'ON' when ECU sends a
signal on the GRY/W wire, closing the
Red/Dark
relay. Supplies power for ECU-
Green
controlled operation of EFI
components.
ELECTRICAL
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