Polaris RANGER XP 1000 2018-2019, Service Manual

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9929399 R01 - 2018-2019 RANGER XP/ CREW 900/1000 Service Manual
© Copyright Polaris Industries Inc.
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TROUBLESHOOTING - HVAC
BLOWER MOTOR DOES NOT OPERATE
1. Verify power is present at the blower motor.
• “Low Setting” should have power present on the
yellow wire.
• “Medium Setting” should have power present on
the red wire.
• “High Setting” should have power present on the
red/dark green wire.
• The black wire should have continuity to ground.
• Repair/Replace harness as necessary or replace
the blower motor if no issues were found.
2. Verify the HVAC control head blower motor switch
has proper continuity.
• Pin 5 should have proper continuity to pin 4 on
“Low Setting.”
• Pin 5 should have proper continuity to pin 1 on
“Medium Setting.”
• Pin 5 should have proper continuity to pin 2 on
“High Setting.”
• Pin 5 should have proper continuity to pin 3 in all
operating positions.
• Pin 5 should have no continuity to any pins when in
the off position.
• If no issues were found, verify all wires between the
HVAC control head and blower motor have proper
continuity.
3. Verify power is present on the Red/Blue wire at the A/
C control head.
• If power is not present, proceed to next step.
• If power is present, replace the A/C head.
4. Verify proper operation of the HVAC relay with the
switch on.
• Pin 45 should have continuity to ground when
powered on. Fan should also turn on.
–
If the fan does not turn on, verify proper
continuity to the HVAC control head. Repair/
replace harness as necessary.
• Pin 46 should have continuity to ground. Repair/
replace harness as necessary.
• Pin 40 should have battery voltage present from
the HVAC fuse.
• Pin 39 should have battery voltage with the key
turned on.
–
If power is not present with the key on, verify
continuity between the key switch pin “D” and
pin 39. Repair/replace harness as necessary.
SYMPTOM POSSIBLE CAUSE SOLUTION
1. Blown fuse
Inspect the fuse / wiring. Replace fuse / repair wiring
2. Broken wiring / connection Check the fan motor ground and connectors. Repair the wiring or connector
3. Fan motor malfunction
Check the lead wires form the motor with a circuit
tester.
Replace Motor
4. Resistor malfunction
Check resistor using a circuit tester. Replace Resistor
5. Fan switch malfunction
Check power into and out of the fan switch. Replace Fan Switch
BLOWER MOTOR OPERATES NORMALLY BUT AIR FLOW IS INSUFFICIENT
SYMPTOM POSSIBLE CAUSE SOLUTION
1. Evaporator inlet obstruction Check evaporator for plugging.
Remove obstruction and clean
evaporator fins
2. Air leak
Check to make sure air hoses are properly
hooked to Louvers, and air ducts.
Repair or adjust
3. Defective thermostat.
switch (frozen evaporator)
Check thermostat using a circuit tester. Replace thermostat
4. Plugged cab filters
Check cab filter condition.
Clean or replace filters
ENGINE / COOLING / HVAC SYSTEM