Service manual

ELEC
LIGHTING SYSTEM
8-24
EAS00788
CHECKING THE LIGHTING SYSTEM
1. The headlight and the high beam indicator
light fail to come on.
1. Headlight bulb and socket
• Check the headlight bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”
• Are the headlight bulb and socket OK?
2. Voltage
• Connect the pocket tester (DC 20 V) to the
headlight and high beam indicator light
couplers as shown.
 A When the dimmer switch is set to “HI”
When the dimmer switch is set to “LO”
Headlight coupler (wire harness side)
Headlight
Positive tester probe

yellow  or
green 
Negative tester probe

black 
High beam indicator light
Positive tester probe

yellow 
Negative tester probe

black 
Meter light coupler (wire harness side)
• Set the main switch to “ON”.
• Start the engine.
• Set the dimmer switch to “HI” or “LO”.
• Measure the voltage (DC 12 V) of yellow

or green  on the headlight coupler (wire
harness side).
• Is the voltage within specification?
EAS00789
2. The meter light fails to come on.
1. Meter light bulb and socket
• Check the meter light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”
• Are the meter light bulb and socket OK?
2. Voltage
• Connect the pocket tester (DC 20 V) to the
meter light coupler (wire harness side) as
shown.
Positive tester probe

blue 
Negative tester probe

black 
Replace the head-
light bulb, socket
or both.
G
Y
B
1 2
3
LY
Br
Ch Dg
RB
Gy GR
BY Sb G LG
Dg Ch L GR Y Gy
RBrBBYSbG
RY
RYLG
45
The wiring circuit
from the main
switch to the head-
light coupler is
faulty and must be
repaired.
This circuit is OK.
Replace the meter
light bulb, socket or
both.
LY
Br
Ch Dg
RB
Gy GR
BY Sb G LG
Dg Ch L GR Y Gy
RBrBBYSbG
RY
RYLG
12
YES
NO
YES
NO
YES
NO
A