Signal System Check - Yamaha TDM850 1996 Service Manual

3. Main switch
Refer to "SWITCH INSPECTION".
4. Wiring connection
S Check the entire signal system for connec-
tions.
Refer to "WIRING DIAGRAM".
Check condition of each circuit for signal sys-
tem. Refer to "SIGNAL SYSTEM CHECK".

SIGNAL SYSTEM CHECK

1. Horn does not sound.
1. Horn switch
Refer to "SWITCH INSPECTION".
2. Voltage
S Connect the pocket tester (DC 20 V) to the
horn lead.
Tester (+) lead ! Black/White lead
Tester (–) lead ! Frame ground
S Turn the main switch to "ON".
S Push the horn switch.
S Check for voltage (12 V) on the "Black/White"
lead at the horn terminal.
:
CORRECT
CORRECT
CORRECT
1
MEETS
SPECIFICATION
:
SIGNAL SYSTEM
INCORRECT
Replace main switch.
POOR CONNECTION
Correct.
INCORRECT
Replace handlebar switch (left).
OUT OF SPECIFICATION
Wiring circuit from main switch to horn terminal
is faulty, repair.
8-34
ELEC