T Troubleshooting - Subaru SVX 1992 Manual

2-4 ITOOO1
ENGINE LUBRICATION SYSTEM
T TROUBLESHOOTING
Before troubleshooting, make sure that the engine oil level is correct and no oil leakage exists .
Trouble
Possible cause
Corrective action
1) Oil pressure switch fail-
Cracked diaphragm or oil leakage within switch Replace .
ure
Broken spring or seized contacts Replace .
Clogged oil filter
Replace .
Malfunction of oil by-pass valve of oil filter Clean or replace .
Malfunction of oil relief valve of oil pump Clean or replace .
1 . Warning light remains
2) Low oil pressure
Clogged oil passage Clean.
on .
Excessive tip clearance and side clearance of oil
pump rotor and gear
Replace .
Clogged oil strainer or broken pipe Clean or replace .
Insufficient engine oil Replenish .
3) No oil pressure Broken pipe of oil strainer Replace .
Stuck oil pump rotor Replace .
1) Burn-out bulb
Replace .
2 . Warning light does not
go on . .
2) Poor contact of switch contact points
Replace .
3) Disconnection of wiring Repair .
1) Poor contact at terminals Repair .
3 . Warning light flickers
2) Defective wiring harness
Repair .
momentarily .
3) Low oil pressure
Check for the same possi-
ble causes as listed in
1 .-2)
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