Yamaha DT125RE 2005 Service Manual page 300

TROUBLESHOOTING
Servomotor does not move
Check:
1. fuse
2. battery
3. main switch
4. servomotor operation
5. wiring connections (Yamaha Power Valve
System)
6. servomotor and tachometer operation
NOTE:
• Before troubleshooting, remove the follo-
wing part(s):
1. side covers (left and right)
2. seat
3. fuel tank
4. headlight cover
5. headlight unit
• Troubleshoot with the following special
tool(s).
Pocket tester
90890-03112
MOTOR
1. Fuse
• Remove the fuse.
• Connect the pocket tester (Ω 1) to the fuse.
• Check the fuse for continuity.
• Is the fuse OK?
YES
2. Battery
• Check the battery condition.
Refer to the "BATTERY INSPECTION" sec-
tion in chapter 3.
8-43
ELEC
NO
Replace the fuse.