5-17
5
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.
NOTE: Make sure the brake lever (hand) and
brake pedal (auxiliary) are properly adjusted for
this procedure.
1. Set the meter selector to the DC Voltage position.
2. Connect the red tester lead to the red/blue wire; then
connect the black tester lead to the black wire.
3. With either brake applied, the meter must show
battery voltage.
NOTE: If the meter shows no voltage, inspect bulb,
fuses, wiring harness, connectors, and switches.
Ignition Timing
The ignition timing cannot be adjusted; however, veri-
fying ignition timing can aid in troubleshooting other
components. To verify ignition timing, use the follow-
ing procedure.
1. Attach the Timing Light to the spark plug high ten-
sion lead; then remove the timing inspection plug
from the left-side crankcase cover.
2. Using the Tachometer, start the engine and run at
1500 RPM; ignition timing should be 10° BTDC.
3. Install the timing inspection plug.
If ignition timing cannot be verified, the rotor may be
damaged, the key may be sheared, the trigger
coil/CKP sensor bracket may be bent or damaged, or
the CDI unit/ECU may be faulty.
ECU Error Codes
(EFI)
If a sensor fails or an out-of-tolerance signal is sensed
by the ECU, an error code will be generated by the
ECU. This will result in the analog needle swinging
full scale (if equipped) or the LCD gauge going blank
(if equipped). The EFI icon will flash.
To read the error code(s), use the following procedure.
1. Make sure the ignition switch is in the OFF posi-
tion; then remove the seat.
2. Locate the diagnostic plug next to the PDM; then
remove the black rubber cap.
3. Connect the Diagnostic Harness to the diagnostic
plug.
ATV-112
4. Turn the ignition switch to the ON position and
read the error code on the LCD. Refer to the fol-
lowing ECU Error Code List to identify the spe-
cific problem area.
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