Checking The Couplers And Leads Connection; Checking The Solenoid Valve Operation; Checking The Solenoid Valve Coil - Yamaha YZ250 Owner's Service Manual

CHECKING THE COUPLERS AND
LEADS CONNECTION
1. Check:
• Couplers and leads connection
Rust/ Dust/ Looseness/Short-cir-
cuit → Repair or replace.
CHECKING THE SOLENOID
VALVE OPERATION
1. Disconnect the solenoid valve
coupler.
2. Connect 12V battery to the sole-
noid valve coupler.
Tester (+) lead → Red lead "1"
Tester (-) lead → Red lead "2"
3. Inspect:
• Solenoid valve "1"
No click when connecting the bat-
tery → Replace.
CHECKING THE SOLENOID
VALVE COIL
1. Inspect:
• Solenoid valve coil resistance
Out of specification → Replace.
Tester (+) lead → Red lead "1"
Tester (-) lead → Red lead "2"
Tester se-
Solenoid
lector posi-
resistance
22.8–27.8
Ω at 20°C
(68 °F)
tion
Ω × 10
SOLENOID VALVE SYSTEM
6-7