Yamaha 2002 TDM900, Service Manual

Page: 433 / 475

8-33
EAS00791
4. The auxiliary light fails to come on.
YES NO
1. Auxiliary light bulb and socket
Replace the auxiliary
light bulb, socket or
both.
S
Check the auxiliary light bulb and socket for
continuity.
Refer to “CHECKING THE BULBS AND
SOCKETS”
S
Are the auxiliary light bulb and socket OK?
YES NO
2. Voltage
The wiring circuit
from the main switch
to the auxiliary light
coupler is faulty and
must be repaired.
S
Connect the pocket tester (DC 20 V) to the
auxiliary light coupler (wire harness side) as
shown.
Positive tester probe
!
blue / red
Negative tester probe
!
black
1
2
S
Set the main switch to “ON”.
S
Set the light switch to “ ” or “ ”.
S
Measure the voltage (DC 12 V) of blue / red
on the auxiliary light coupler (wire har-
ness side).
S
Is the voltage within specification?
1
This circuit is OK.
LIGHTING SYSTEM
ELEC