10.38
9929419 R02 - 2018-2019 RZR XP / XP 4 Turbo S Service Manual
© Copyright Polaris Industries Inc.
DIGITAL WRENCH DATA TROUBLESHOOTING
The table shown below is a guide for using the Data Display to diagnose a vehicle. A more accurate representation is
to compare the readings to a known good vehicle under the same conditions.
DATA DISPLAY
ITEM
DEFINITION VALUE VALUE DESCRIPTION
Air / Fuel Ratio
Indicator of engine
operation. Value
typically bounces
between lean and
rich
Lean
Engine getting too much air / too little fuel
Rich
Engine getting too little air / too much fuel
AWD Driver
ECU control of the
AWD coil
Active
ECU is grounding the AWD coil
Inactive
ECU is not grounding the AWD coil
AWD Switch
Input to ECU to
indicate if AWD is
switched ON or OFF
Active
ECU receiving a signal that the AWD switch is in
an AWD mode
Inactive
ECU receiving a signal that the AWD switch is in
2WD or Turf mode.
Barometric Pressure
Reading of
atmospheric
pressure
28–30 InHg
Unit is being used at an elevation around sea-
level
19–21 InHg
Unit is being used at an elevation around 10,000
ft
0
Default value to indicate an open circuit. Check
for bad connection, broken wire, or faulty sensor.
Battery Voltage
Voltage seen on the
power wire feeding
the ECU
11.8 to 12.8V
typical key on voltage
12.8 to 14.5V
typical engine running voltage
Boost Pressure
Indicate intake air
pressure at the
sensor before the
throttle body
varies
≈ barometric of manifold pressure at key on
varies
≈ barometric pressure at idle since no boost is
being created until off-idle
Boost Temperature
Temperature of the
boost pressure air
varies
this value should be higher than the intake air
temperature unless engine is cold
Brake Switch
Indicates if the brake
pedal is being
pushed
Active
Brake pedal is being pushed
Inactive
Brake pedal released, open circuit, or faulty
switch
Cam Sensor Signal
Status
Indicates if the ECU
is seeing a hall-effect
signal from the cam
sensor
Yes
Camshaft is turning
No
No signal from camshaft sensor / engine not
running
Cooling Fan Relay
Driver
ECU control of the
cooling fan relay
Active
ECU is grounding the cooling fan relay. Fan
should be running
Inactive
ECU is not grounding the fan relay
Crankshaft Signal
Present
Indicates if the ECU
is seeing a hall-effect
signal from the
crankshaft sensor
Yes
ECU is receiving an RPM signal from the CPS.
Crankshaft should be turning
No
ECU does not see the crankshaft turning
Cycle
Synchronization
Checks for engine
misfire
Yes
Engine is synchronized. No spark loss
No
Engine out of synchronization. Intermittent spark
loss
Differential Lock
Driver
ECU control of the
turf solenoid
Active
ECU is grounding the diff relay to activate the turf
function. Differential unlocked
Inactive
ECU is not grounding the diff relay. Differential is
locked.
DIAGNOSTIC
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