Polaris 2009 Trail Boss 330 Service Manual page 198

ELECTRICAL
POWER DISTRIBUTION MODULE (PDM)
COIL 1
COIL 2
COIL 3
Jl- -C
RUN
Jl- -B
BRAKE
Jl- -G
TRANS
Jl- -F
THERM
Jl- -E
THERM RTN
The Power Distribution Module (PDM) integrates
these electronic features found on Polaris ATVs;
Rectifier/regulator, Solid- -state circuit breaker
output, Starter Lockout output and Engine
temperature controller. There are no service parts
in the PDM. If the PDM fails, it must be replaced.
Following are overviews of the various PDM circuits
and how they function:
10.6
Power Distribution Module (PDM)
PDM Located Inside Front Grill Cover
Jl- -L
3 Phase
Jl- -K
Regulator
Jl- -J
Regulator
Control
Circuit
Breaker
Control
Starter
Lockout
Temperature
Controller
PDM Control Circuit
Jl- -M
Jl- -P
High Side
Switch
High Side
Switch
High Side
Switch
Low Side
Switch
Low Side
Switch
High Side
Switch
Regulator
The rectifier converts the the output of the 3--phase
alternator (COIL 1,2,3) and applies it to the battery
and the PDM loads. The regulator monitors the
battery voltage and shuts off the rectifier when
full--charge exists on the battery. SCR's are used to
connect and disconnect the alternator from the
battery to achieve regulation of the battery voltage.
The regulator shuts off current on the BAT+ pin if the
batter exceeds the over--voltage threshold. A high
voltage transient will cause the regulator to turn off for
a short period of time. If there truly is an open battery
BAT+
GND
Jl- -R
BAT PROT
LIGHTS
Jl- -H
RELAY
Jl- -N
ACC_PWR
Jl- -A
STARTER
HOT
Jl- -D
INDICATOR
Jl- -S FAN