Yamaha YZ250 2004 Manuel D'atelier Du Proprietaire page 520

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SOLENOID VALVE SYSTEM
EC624000
COUPLERS AND LEADS CONNECTION
INSPECTION
1. Check:
9 Couplers and leads connection
EC652040
SOLENOID VALVE OPERATION
R R
1. Disconnect the solenoid valve coupler.
1 2
2. Connect 12V battery to the solenoid valve
coupler.
Battery (+) lead ¡ Red lead 1
Battery (–) lead ¡ Red lead 2
3. Inspectt:
9 Solenoid valve 1
EC653002
SOLENOID VALVE COIL INSPECTION
R R
1. Inspect:
1 2
9 Solenoid valve coil resistance
Tester (+) lead ¡ Red lead 1
Tester (–) lead ¡ Red lead 2
6-8
Rust/ Dust/ Looseness/Short-circuit ¡
Repair or replace.
No click when connecting the battery ¡
Replace.
Out of specification ¡ Replace.
Solenoid
resistance
22.8~27.8Ω at
20°C (68°F)
ELEC
Tester selector
position
Ω × 10