Service manual

ELEC
LIGHTING SYSTEM
8-28
EAS00789
2. The meter light fails to come on.
1. Meter light bulb and socket
9
Check the meter light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
9
Are the meter light bulb and socket OK?
YES NO
Replace the meter
light bulb, socket or
both.
EAS00790
3. The tail/brake light fails to come on.
1. Tail/brake light bulb and socket
9
Check the tail/brake light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
9
Are the tail/brake light bulb and socket OK?
YES NO
Replace the tail/
brake light bulb,
socket or both.
2. Voltage
9
Connect the pocket tester (AC 20 V) to the
meter light coupler (wire harness side) as
shown.
Positive tester probe
→→
blue
11
Negative tester probe
→→
black
22
9
Set the main switch to “ON”.
9
Start the engine.
9
Measure the voltage (AC 12 V) of blue lead
terminal
1
on the meter light coupler (wire
harness side).
9
Is the voltage within specification?
Br
G
Ch
L
B
Dg
L
B
Br
Dg
G
Ch
1
2
YES NO
Replace the rectifi-
er/regulator.
This circuit is OK.
2. Voltage
9
Connect the pocket tester (AC 20 V) to the
tail/brake light coupler (wire harness side) as
shown.
Positive tester probe
→→
blue
11
Negative tester probe
→→
black
22
9
Set the main switch to “ON”.
9
Start the engine.
9
Measure the voltage (AC 12 V) of blue lead
terminal
1
on the tail/brake light coupler
(wire harness side).
9
Is the voltage within specification?
B
Ch
L
Dg
Y
L
Dg
B
G/Y
Ch
12
YES NO
Replace the rectifi-
er/regulator.
This circuit is OK.
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