Signal System - Yamaha XZ550RJ 1982 Service Manual

Signal system tests and check
The battery provides power for operation of the
horn, brake light, indicator lights, and flasher light. If
none of the above operates, always check the bat-
tery voltage before proceeding further. Low battery
voltage indicates either a faulty battery, low battery
electrolyte, or a defective charging system. See
page 7-8 CHARGING SYSTEM for checks of the
battery and charging system. Also check the fuse
condition. Replace any "open" fuses. There are
individual fuses for various circuits (see the com-
plete circuit diagram).
Horn does not work:
1. Check for 12V on the brown wire to the
horn.
2. Check for good grounding of the horn (pink
wire) when the horn button is pressed.
Brake light does not work:
1. Check the bulb.
2. Check for 12V on the yellow wire to the
brake light with brake pedal depressed.
3. Check for 12V on the brown wire to each
brake light switch (front brake and rear
brake switches).
Flasher light(s) do not work:
1. Check the bulb.
2. Right circuit:
a) Check for 12V on the dark green
wire to the light.
b) Check for ground on the black wire
to the light assembly.
3. Left circuit:
a) Check for 12V on the dark brown
wire to the light.
b) Check for ground on the black wire
to the light assembly.
c)
4. Right and left circuits do not work:
a) Check for 12V on the brown/white
wire to the flasher switch on the left
handlebar.
b) Check for 12V on the brown wire to
the flasher relay.
c) Replace the flasher relay.
d) Replace the flasher switch.
5. Check the self-cancelling unit. (Refer to
Flasher Self-Cancelling Unit.)
The neutral light does not work:
1. Check the bulb.
2. Check for 12V on the sky blue wire to the
neutral switch.
3. Replace the neutral switch.
Oil level warning light does not work:
1. Connect the oil level switch (black/red wire)
to ground. If the light comes on, check for
proper oil level.
2. If the oil level is correct, replace the oil level
switch.
Flasher self-cancelling unit
The self-cancelling unit turns off the flashers. Gen-
erally, the signal will cancel after either 10 seconds
of operation or after the motorcycle has traveled
150 meters (490 feet), whichever is greater. At low
speed, the cancelling is a function of distance; at
high speeds, it's a function of both time and dis-
tance. The handlebar switch has three positions: L
(left), OFF, and R (right). The switch lever will re-
turn to the OFF position after being pushed to L or
R, but the signal will function. By pushing the lever
in, the signal may be cancelled manually. Inspec-
tion
If the flasher self-cancelling unit should become
inoperative, proceed as follows:
1. Pull off the 6-pin connector from the flasher
self-cancelling unit, and connect the yel-
low/green lead to ground. Operate the han-
dlebar switch. If the signal operates nor-
mally in L, R, and OFF, the following are in
good condition:
a. Flasher unit
b. Bulb
c. Lighting circuit
d. Handlebar switch light circuit
If (a) and (b) are in good condition, the following
may be faulty:
•
Flasher cancelling unit.
•
Handlebar switch reset circuit.
•
Speedometer sensor circuit.
2. Pull off the 6-pin connector from the flasher
self-cancelling unit, and connect a tester
(ohms x 100 range) across the white/green
and the black leads on the wiring harness
side. Turn the speedo-
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