10.39
Battery and Electrical Systems
10
Hand Warmer Diagnostics
There are two types of hand warmer element pads used
on Polaris snowmobiles. One version is used on steel/
painted handlebars and touring model rear passenger
grab bars, while the other is used on aluminum (Pro
Taper) handlebars. The difference between the two hand
warmer element pads is in the resistance values. A lower
resistance element pad is used on aluminum bars
because aluminum dissipates heat faster than steel.
A common misconception with Polaris hand warmer
e
lements is the higher resistance circuit is the high
temperature element. In reality, the hand warmer circuit
with the least amount of resistance will flow more current,
and thus create more heat. This is an important fact that
must be taken into consideration when performing
resistance checks on a set of hand warmers.
For example, if a customer h
as a concern that the left
hand warmer appears to be cooler than the right, the
technician should compare the resistance readings of
each pad to the specifications, and then between the left
and right pads. If the resistance of the left pad is
significantly higher than that of the right, more current will
flow to the right side. While more common reasons for this
can be attributed to how the customer holds the bar in
their hands (fingers on brake lever and not wrapped
around grip, etc.), there may be instances where
comparing the left and right hand warmer resistance
values may resolve the customer's concern.
Another issue is when one or both of the element circuits
sho
rts to the handlebar itself. This can occur either
because the pad was improperly installed, solder breaks,
or if the grip moves on the bar.
Hand Warmer Resistance Checks
NOTE: Hand warmer pads do not feature a high
temperature circuit. On snowmobiles featuring a left-
hand control, high temperature is achieved by
supplying power to both the low and medium circuits.
On snowmobiles featuring console-mount controls,
the medium circuit is the high temperature circuit.
CIRCUIT (Wire Color)
RESISTANCE @ ROOM
TEMP. (68 F / 20 C)
STEEL HANDLEBARS
LOW (BLUE) to GROUND
(BROWN)
20.5 +/-10%
MEDIUM (BLUE/RED) to
GROUND (BROWN)
13 +/-10%
LOW or MEDIUM to CHASSIS
(SHORT)
O.L. (OPEN CIRCUIT)
ALUMINUM HANDLEBARS
LOW (BLUE) TO GROUND
(BROWN)
10 +/-10%
MEDIUM (BLUE/RED) to
GROUND (BROWN)
5 +/-10%
LOW or MEDIUM to CHASSIS
(SHORT)
O.L. (OPEN CIRCUIT)
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