131
RPM Limiter
NOTE: The ATV is equipped with an ECM that cuts fuel spray and spark when maximum RPM is
approached. When the RPM limiter is activated, it could be misinterpreted as a high-speed misfire.
Stator Coil
VOLTAGE
(AC Generator - No Load)
The connector is a three-pin one in the harness coming
from the generator.
XR114A
NOTE: Test the connector that comes from the
engine.
1. Set the meter selector to the AC Voltage position.
2. Test between the three black wires for a total of three
tests.
3. With the engine running at a constant 5000 RPM, all
voltage tests must be within specifications.
NOTE: If the voltage test fails but the resistance
check is correct with no insulation break down, check
the rotor. If the rotor check is good, replace the stator.
RESISTANCE (AC Generator)
1. Set the meter selector to OHMS position.
2. Test between the three black wires for a total of three
tests.
3. The meter reading must be within specification.
Regulator/Rectifier
The regulator/rectifier is located in front of the gas tank.
TESTING
1. Start engine and warm up to normal operating tem-
perature; then connect a multimeter to the battery as
follows.
2. Select the DC Voltage position; then connect the red
tester lead to the positive battery post and the black
tester lead to the negative battery post.
3. Start the engine and slowly increase RPM. The volt-
age should increase with the engine RPM to a maxi-
mum of 15.5 DC volts.
NOTE: If voltage rises above 15.5 DC volts, the reg-
ulator is faulty or a battery connection is loose or cor-
roded. Clean and tighten battery connections or
replace the regulator/rectifier. If voltage does not rise,
see EFI Sensors/Components in this section. If
charging coil voltage is normal, replace the regula-
tor/rectifier.
Component data can be retrieved using the CATT II. Utilize the Sensor Data screen.
Gear
Park
Neutral
Reverse
High/Low
Fail-Safe Mode
Incorrect
ECU/Gauge
(P0630)
Warranty
Registration
(U1001)
2WD
2250
6500
4000
7650 (500)
7250 (550/700)
4000 6650
4500
4WD
4WD Lock
2WD Override
4500 (500)
5000 (550/700)
4WD Override
7000
Differential-Lock Override
CAUTION
Do not run the engine at high RPM for more than 10 sec-
onds.
CAUTION
Do not run the engine at high RPM for more than 10 sec-
onds.
Summary of Contents for 2016 Alterra 500
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