Signal System Control - Yamaha TT600RE 2004 Service Manual

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.
2. Voltage.
•
Connect the pocket tester (DC 20V) to the
horn cable.
Tester terminal (+)
Tester terminal (–)
•
Turn the main switch to ON.
•
Check the voltage (12V) on the "Brown"
terminal of the horn.
P B
OFF
ON
1 2
G
BrW BrB
P B
BrL
Y GB
CORRECT
Brown terminal (1)
Earth
IN COMPLIANCE WITH
SPECIFICATIONS (12V)
*
SIGNAL SYSTEM
DISCONTINUITY
The horn switch is defective. Replace the left
handlebar switch.
OUT OF SPECIFICATIONS
The circuit from the main switch to the horn ter-
minal is defective. Repair.
7-55
ELEC