Yamaha TT600R, Service Manual, Page: 357 / 380

ELEC
SIGNAL SYSTEM
7-55
SIGNAL SYSTEM CONTROL
1. The horn does not work.
1. Horn switch.
•
Disconnect the left handlebar switch con-
nector from the wire harness.
•
Connect the pocket tester (
Ω
x 1) to the
switch terminals.
•
Check the switch component for conti-
nuity between “Pink (1)” and “Black (2)”.
Refer to “SWITCH CHECK” section.
CORRECT
DISCONTINUITY
The horn switch is defective. Replace the left
handlebar switch.
2. Voltage.
•
Connect the pocket tester (DC 20V) to the
horn cable.
Tester terminal (+)
➔
Brown terminal (1)
Tester terminal (–)
➔
Earth
•
Turn the main switch to ON.
•
Check the voltage (12V) on the “Brown”
terminal of the horn.
OUT OF SPECIFICATIONS
The circuit from the main switch to the horn ter-
minal is defective. Repair.
IN COMPLIANCE WITH
SPECIFICATIONS (12V)
G
OFF
ON
P B
Y GB
P B BrL
BrB BrW
2 1
*