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(1) Safety lock valve
(Continuity test : Lever down)
(2) Safety lever lock circuit malfunction
1) Check battery voltage at (+) terminal of coupler.
Check the fuse if no voltage were tested.
Upper side solenoid valve is for the safety lock circuit.
Lower one is for the travel hi-low function.
(1)
2) Pull the harness to see if the coupler is not out of the lever
lock solenoid valve. (Pull by a 3 kg or less force.)
3) Continuity test of corresponding harness are required.
4) Solenoid valve check
1. Coil resistance test
Specification: Approx. 10
• Shown here is a measurement with digital tester.
(Note that the positive (+) and negative (-) connec-
tions are reversed with the analog type.)
2. Coil insulation test
Specification: Over 1 M
5) Check lever lock switch for continuity by operating the lever
and 12V test.
(Battery 12V test : Key switch is on)
II-117
WSM U15-3
at 20 °C
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