Accessory Power Test; Pdm To Fan Output Test; Fan Motor Test - Polaris Ranger 500 2x4 2007 Service Manual

ELECTRICAL

Accessory Power Test

The ignition switch must be turned to the "ON" position before completing this test. Measure DC volts
at the orange/white accessory terminal post leading from pin J on the PDM SSCB #1 connector.
Test Procedure Measurement should be at or near Battery voltage when RUN Signal is present at PDM (Ignition Switch
in the "ON" position). RUN Signal can be removed from the PDM by turning the Ignition Switch "OFF",
damaged wiring, or a faulty PDM.
What does passing
Passing this test indicates the accessory lead, wire harness, connections, PDM, and RUN Signal are good.
this test indicate?
Failing this test indicates there is a problem with the wire harness, connections, RUN Signal, battery, or
What does failing
PDM. If Voltage is not present on the accessory lead, check wiring, connections, and battery before
this test indicate?
proceeding to RUN Signal Test.

PDM to Fan Output Test

This test should be conducted with the vehicle Parking brake set and the Vehicle in Neutral with the engine
running. The PDM supplies power to the fan motor via pin K on SSCB # 1. To test the PDM for FAN
Test Procedure
output, unplug the thermistor at the connector near the left side of the engine cylinder head. Measure the
DC voltage on the orange/black wire at the fan connector. Voltage should be at or near battery voltage.
What does passing
A constant fan voltage of near battery voltage indicates that the fan output is correct.
this test indicate?
Fan voltage less than battery voltage indicates a problem with the fan output circuit of the PDM. If the
What does failing
fan output is 12 VDC for a few seconds then falls to zero, this means that the PDM is going into a safe
this test indicate?
mode because the PDM has detected a no load condition. Proceed to Fan Motor Test.

Fan Motor Test

Disconnect the fan connector. Verify the fan is free to rotate before proceeding. Connect a DC ammeter
in-line with the orange/black wire. Ground the brown wire leaving the fan motor connector. Unplug the
Test Procedure thermistor at the left side of the engine cylinder head. With the vehicle parking brake set and the vehicle
in Neutral, start the engine. The cooling fan should start running. The ammeter should show a constant
current draw of 8.8 A or less.
What does passing A current measurement of 8.8 A or less indicates the fan motor is in good condition and is operating
this test indicate? properly.
A current draw of 0 A (the fan is not spinning) indicates that the fan motor is inoperative or it is not
receiving voltage from the PDM. If PDM to FAN Output Test has already been passed, replace the fan
What does failing
motor; if not, proceed to the PDM to FAN Output Test after checking the fan for obstructions. Current
this test indicate?
draw greater than 8.8 A indicates that the fan motor should be replaced, but only after checking the fan
for obstructions.
10.14
ACCESORY POWER Test
PDM to FAN Output Test
Fan Motor Test