Yamaha 2002 TDM900 Service Manual page 412

Negative tester probe !
Positive tester probe !
S Measure the secondary coil resistance.
Secondary coil resistance
10.4 X 15.6 kΩ at 20_C
S Is the ignition coil OK?
YES
EAS00749
7. Main switch
S Check the main switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the main switch OK?
YES
1
spark plug lead
spark plug lead
2
NO
Replace the ignition
coil.
NO
Replace the main
switch.
8-12
IGNITION SYSTEM
EAS00750
8. Engine stop switch
S Check the engine stop switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the engine stop switch OK?
YES
EAS00752
9. Sidestand switch
S Check the sidestand switch for continuity.
Refer to "CHECKING THE SWITCHES".
S Is the sidestand switch OK?
YES
ELEC
NO
Replace the right
handlebar switch.
NO
Replace the side-
stand switch.