Yamaha YZ250N Owner's Service Manual page 506

SOLENOID VALVE SYSTEM
EC624000
COUPLERS AND LEADS CONNECTION
INSPECTION
1. Check:
9Couplers and leads connection
EC652040
SOLENOID VALVE OPERATION
1. Disconnect the solenoid valve coupler.
2. Connect 12V battery to the solenoid valve
coupler.
Battery (+) lead Red lead 1
Battery (–) lead Red lead 2
3. Inspectt:
9Solenoid valve 1
EC653002
SOLENOID VALVE COIL INSPECTION
1. Inspect:
9Solenoid valve coil resistance
Tester (+) lead Red lead 1
Tester (–) lead Red lead 2
6-7
Rust/ Dust/ Looseness/Short-circuit
Repair or replace.
No click when connecting the battery
Replace.
Out of specification
Solenoid
resistance
22.8~27.8Ω at
20°C (68°F)
ELEC
Replace.
Tester selector
position
Ω × 10