5-13
5
3. Remove the two cap screws securing the starter to
the crankcase; then remove the starter. Account for
the wiring forms and an O-ring.
INSTALLING
1. Apply a small amount of grease to the O-ring seal on
the starter; then install the starter into the crankcase.
Secure with two machine screws and wiring forms.
2. Secure the positive cable to the starter with the nut.
3. Connect the battery.
Electronic Control Unit
(ECU)
The electronic control unit (ECU) is located beneath
the seat near the battery.
NOTE: The ECU is not a serviceable component.
If the unit is defective, it must be replaced.
The ECU is rarely the cause for electrical problems;
however, if the ECU is suspected, substitute another
ECU of the same part number to verify the suspected
one is defective.
Error codes can be cleared by following the procedures
located in the ECU Malfunction Codes sub-section in
this section.
Regulator/Rectifier
The regulator/rectifier is located under the rear rack
and rear fenders.
TESTING
1. Start engine and warm up to normal operating
temperatures; then connect a multimeter to the bat-
tery 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
voltage should increase with the engine RPM to a
maximum of 15.5 DC volts.
NOTE: If voltage rises above 15.5 DC volts, the
regulator is faulty or a battery connection is loose
or corroded. Clean and tighten battery connec-
tions or replace the regulator/rectifier. If voltage
does not rise, check Voltage in this section. If
charging coil voltage is normal, replace the regula-
tor/rectifier.
Headlights
The connectors are the four 2-prong ones plugged into
the headlight bulbs (two on each side).
VOLTAGE
NOTE: Perform this test in turn on the main har-
ness side of all four connectors. Also, the ignition
switch must be in the LIGHTS position.
NOTE: The LO beam is the outside bulb, and the
HI beam is the inside bulb.
1. Set the meter selector to the DC Voltage position.
2. Connect the red tester lead to one wire; then con-
nect the black tester lead to the other wire.
3. With the dimmer switch in the LO position, test
the two outside connectors (LO beam). The meter
must show battery voltage.
4. With the dimmer switch in the HI position, test the
two inside connectors (HI beam). The meter must
show battery voltage.
NOTE: If battery voltage is not shown in any test,
inspect the LIGHTS fuse, battery, main wiring har-
ness, connectors, or the left handlebar switch.
Taillight - Brakelight
The connector is the 3-prong one located under the
rear fender assembly.
VOLTAGE (Taillight)
NOTE: Perform this test on the main harness side
of the connector. Also, the ignition switch should
be in the LIGHTS position.
1. Set the meter selector to the DC Voltage position.
2. Connect the red tester lead to the white wire; then
connect the black tester lead to the black wire.
3. With the ignition key in the LIGHTS position, the
meter must show battery voltage.
NOTE: If the meter shows no voltage, inspect
fuses, wiring harness, connectors, and switches.
VOLTAGE (Brakelight)
NOTE: Perform this test on the main harness side
of the connector. Also, the ignition switch should
be in the ON position and the brake (either foot
pedal or hand lever) must be applied.
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Manual
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