Service manual

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ELEC
LIGHTING SYSTEM
2. The tail/brake light fails to come on.
YES
NO
YES
NO
1. Tail/brake light bulb and socket
• Check the tail/brake light bulb and socket
for continuity.
Refer to “CHECKING THE BULBS AND
BULB SOCKETS”.
• Are the tail/brake light bulb and socket
OK?
Replace the tail/
brake light bulb,
socket or both.
2. Voltage
• Connect the pocket tester (AC 20 V) to the
tail/brake light coupler as shown.
Tail/brake light coupler (wire harness side)
Tail/brake light
Positive tester probe
→
blue
1
Negative tester probe
→
black
2
• Set the main switch to “ON”.
• Start the engine.
• Measure the voltage (AC 12 V) of blue 1
on the tail/brake light coupler (wire har-
ness side).
• Is the voltage within specification?
This circuit is OK. Replace the rectifier/
regulator.
YL
B
LY
B
1
2