Polaris RZR PRO XP 2020, Service Manual, Page: 76 / 598

1.70
9850068 R01 - 2020-2021 RZR PRO XP / XP 4 Service Manual
© Copyright Polaris Industries Inc.
EPS TROUBLESHOOTING (POWER STEERING NON-FUNCTIONAL WITH MIL OFF)
IMPORTANT
READ BEFORE YOU REPLACE THE EPS UNIT!
Verify the EPS unit has the latest software version and calibration loaded before replacing the EPS unit. If not, update
to the latest version for each and follow the guided diagnostic procedure(s) available in Digital Wrench®.
Power
Steering
Non
Functional,
MIL is OFF
↓
Is Battery
Voltage >11
and
<16VDC?
→
No
Determine
cause of
incorrect
battery
voltage and
repair
Yes
↓
Is EPS Fuse
OK?
→
No
Replace
EPS Fuse.
Yes
↓
12 VDC and
GND across
2 Pin EPS
Connector
with Key
On?
→
No
Check EPS
Power
Relay and
Circuit
Yes
↓
12 VDC on
Pin 3 of the
8 pin EPS
Connector?
→
No
Check
wiring from
Connector
to Ignition
Switch
Circuit
Yes
↓
Begin
Digital
Wrench
EPS
Trouble-
shooting
Procedure
←
Yes
EPS MIL
turns on
during
Instrument
Cluster
Power Up
Self Test?
→
No
MIL Lamp
should
come on
briefly
during
Instrument
Cluster
Power Up.
→
Instrument
Cluster EPS
MIL lamp
OK?
→
No
Trouble-
shoot per
“Non
Functional
and MIL
ON”
↑ ←
← ← ↓
GENERAL INFORMATION