Table of Contents
GENERAL INFORMATION
NO CRANK NO START OR SLOW CRANK
1. Verify that battery is charged and has ~12.6 V using
DMM or battery tester.
• Check battery electrolyte level. If low top off battery.
See Maintenance — Electrical and Ignition
Systems.
• Charge battery at recommended rate. See. Attempt
starting after charging.
• If battery will not reach ~12.6 V could be caused by
battery draw. Refer to Diagnostic — Electrical
Diagnostics.
• If battery will not reach ~12.6 V, load test battery.
Replace if necessary. Refer to Electrical — Battery
Removal / Installation.
2. Verify connections at battery are installed correctly
and are tight.
• If battery terminals are not installed correctly, install
terminals correctly
• Make sure terminals are clean of dirt and corrosion.
If not refer to Maintenance — Battery Maintenance.
3. Visually inspect vehicle for any electrical connectors
or wiring that may be loose or damaged.
• If wiring issues are found, repair as necessary.
Refer to wiring diagrams if needed.
• Check battery ground. Follow Negative (-) Cable
from battery to chassis and make sure connection
is clean and tight.
4. Check connections at starter and starter solenoid.
Refer to Electrical Chapter.
• Make sure connections are clean and tight. If not
repair before further diagnosis.
• Check Positive (+) terminals at starter and solenoid
for available voltage using DMM. Readings should
be ~12.6 V
• With battery disconnected check cables for high
resistance. Reading should be less than 1 Ohm. If
resistance is higher than specification replace
wiring.
• Reconnect battery and perform voltage drop test
on wiring to starter and to starter solenoid. Concern
may still be caused by high resistance in wires
even if resistance is within specification when
disconnected.
• If voltage drop test fails, continue testing to isolate
component that will require replacement (starter /
starter solenoid / wiring). Acceptable voltage drop
during cranking is 0.1 V per connection.
5. Check Brake Switch operation.
1.26
• Using Digital Wrench® verify that the Brake Switch
is changing state from "Active" when the brake is
depressed to "Inactive" when the brake is released.
• Most vehicles need to see brake being depressed
before vehicle will start. If brake lights do not light
when brake is depressed, concern may be caused
by brake switch operation.
6. Possible faulty key switch.
• Attempt turning key switch on and off multiple
times.
• Wiggle key switch while turning.
• If vehicle starts, concern may be caused by key
switch or connection to switch. Refer to Electrical
Chapter.
7. Check for communication with ECU using Digital
Wrench®
• If there is no communications with ECU there may
be a concern with the CAN system or ECU causing
the no start.
8. Concern may be caused by mechanical engine
concern.
• Refer to Engine Troubleshooting.
9940259 R02 - 2022 RZR PRO R / PRO R 4 Service Manual
© Copyright Polaris Industries Inc.
Chapters
Table of Contents
Troubleshooting
