Digital Wrench Data Troubleshooting - Polaris RZR XP Turbo Service Manual

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
DEFINITION
ITEM
Indicator of engine
operation. Value
Air / Fuel Ratio typically bounces
between lean and
ECU control of the
AWD Driver
Input to ECU to
AWD Switch indicate if AWD is
switched ON or OFF
Reading of
atmospheric
Barometric Pressure
Voltage seen on the
Battery Voltage
power wire feeding
Indicate intake air
pressure at the
Boost Pressure
sensor before the
throttle body
Temperature of the
Boost Temperature
boost pressure air
Indicates if the brake
pedal is being
Brake Switch
Indicates if the ECU
Cam Sensor Signal is seeing a hall-effect
Status signal from the cam
ECU control of the
Cooling Fan Relay
cooling fan relay
Driver
Indicates if the ECU
Crankshaft Signal is seeing a hall-effect
Present signal from the
crankshaft sensor
Cycle
Checks for engine
Synchronization
Differential Lock ECU control of the
Driver turf solenoid
9928491 R04 - 2017-2018 RZR XP Turbo / XP4 Turbo Service Manual
© Copyright Polaris Industries Inc.
VALUE
Lean
Rich
rich
Active
AWD coil
Inactive
Active
Inactive
28–30 InHg
19–21 InHg
pressure
0
11.8 to 12.8V
12.8 to 14.5V
the ECU
varies
varies
varies
Active
Inactive
pushed
Yes
No
sensor
Active
Inactive
Yes
No
Yes
misfire
No
Active
Inactive
EFI / FUEL SYSTEM
VALUE DESCRIPTION
Engine getting too much air / too little fuel
Engine getting too little air / too much fuel
ECU is grounding the AWD coil
ECU is not grounding the AWD coil
ECU receiving a signal that the AWD switch is in
an AWD mode
ECU receiving a signal that the AWD switch is in
2WD or Turf mode.
Unit is being used at an elevation around sea-
level
Unit is being used at an elevation around 10,000
ft
Default value to indicate an open circuit. Check
for bad connection, broken wire, or faulty sensor.
typical key on voltage
typical engine running voltage
≈ barometric of manifold pressure at key on
≈ barometric pressure at idle since no boost is
being created until off-idle
this value should be higher than the intake air
temperature unless engine is cold
Brake pedal is being pushed
Brake pedal released, open circuit, or faulty
switch
Camshaft is turning
No signal from camshaft sensor / engine not
running
ECU is grounding the cooling fan relay. Fan
should be running
ECU is not grounding the fan relay
ECU is receiving an RPM signal from the CPS.
Crankshaft should be turning
ECU does not see the crankshaft turning
Engine is synchronized. No spark loss
Engine out of synchronization. Intermittent spark
loss
ECU is grounding the diff relay to activate the turf
function. Differential unlocked
ECU is not grounding the diff relay. Differential is
locked.
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