Polaris 2007 Sportsman 450 EFI, Service Manual

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10.5
ELECTRICAL
10
POWER DISTRIBUTION MODULES (PDM)
Sportsman EFI Overview
The Power Distribution Module (PDM) integrates these electronic features found on Polaris 500 and 500 X2 EFI ATVs; rectifier/
regulator, main solid-state circuit breaker (SSCB) output, accessory power output, ignition relay output, fan relay controller,
ECM relay output, ECM/cluster memory power, light output, starter lockout, active descent control (ADC) and differential
solenoid drive (X2 ONLY)
. 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:
Regulator
The rectifier converts the output of the 3-phase alternator 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 battery
exceeds the over-voltage threshold. The regulator will not turn on unless there exists battery voltage in excess of the minimum battery
voltage requirement. Therefore, do not attempt to charge dead batteries using the vehicle’s charging system.
Power Distribution Module (PDM)
PDM Located Inside Front Grill Cover
SPORTSMAN 500 EFI X2
SPORTSMAN 500 EFI