Sakai SW300-1, Shop Manual

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10-042
TROUBLESHOOTING
2-6-8. Hydraulic oil fi lter warning lamp remains ON
Reference Fig. : 2-6-1
Check point Check/Cause Action
1. Hydraulic Oil Filter
Switch
• When starter switch is OFF, check continuity between
hydraulic oil fi lter switch inlet terminal wire LR and chassis
ground.
There is no continuity in normal condition.
• If there is continuity, hydraulic fi lter switch is faulty.
Replace hydraulic oil
fi lter switch.
2-6-9. Engine oil pressure warning lamp remains ON
Reference Fig. : 2-6-1
Check point Check/Cause Action
1. Harness • Disconnect connectors between combination meter and
engine oil pressure switch.
• Measure resistance between terminals and chassis
ground.
• Combination meter connector terminal wire No.25
wire and chassis ground.
• Engine oil pressure switch terminal wire YB and
chassis ground.
Standard resistance : 100 k Ω or more
• If resistance is abnormal, harness is faulty.
Repair or replace
harness.
2. Engine Oil Pressure
Switch
• Disconnect engine oil pressure switch and check
continuity between its terminals.
There is continuity in normal condition.
• If there is continuity, engine oil pressure switch is faulty.
Replace engine oil
pressure switch.
3. Combination Meter
(Engine oil pressure
warning indicator lamp)
(1) When starter switch is ON, measure voltage between
combination meter terminal wires and ground terminal
wire.
• Battery terminal inlet wire No. 15 inlet wire Y and
ground terminal wire B.
• Starter switch terminal inlet wire No. 14 inlet wire BrB
and ground terminal wire B.
Standard voltage : 12 V or more
(2) When starter switch is ON, measure voltage between
combination meter engine oil pressure warning terminal
outlet wire No. 25 wire YB and chassis ground.
Standard voltage : 12 V or more
• If above items (1) and (2) are OK and no abnormality
is found in engine oil pressure switch but engine oil
pressure warning lamp remains on after starting engine,
combination meter is faulty.
Replace combination
meter.
10̲TROUBLESHOOTING̲oku.indd 10-042 10̲TROUBLESHOOTING̲oku.indd 10-042 2012/11/14 20:25:57 2012/11/14 20:25:57