Honda Civic Service Manual page 170

Engine Lubrication
Oil Pressure Switch Test
1 . R e m o v e t h e Y E U R E D w i r e ( A ) f r o m t h e e n g i n e o i l
pressure switch (B).
Check for continuity between the positive terminal
( C ) a n d t h e e n g i n e ( g r o u n d ) . T h e r e s h o u l d b e
continuity with the engine stopped. There should
be no continuity with the engine running.
lf the switch fails to operate, check the engine oil
l e v e l . l f t h e e n g i n e o i l l e v e l i s O K . c h e c k t h e e n g i n e
oil pressure. lf the oil pressure is OK, replace lhe oil
Dressure switch.
2.
8-4
Oil Pressure Test
lf the oil pressure indicator stays on with the engine
r u n n i n g . c h e c k t h e e n g i n e o i l l e v e l . l f t h e o i l l e v e l i s
correct:
Connect a tachometer.
Remove the engine oil pressure switch, and install
a n o i l p r e s s u r e g a u g e { A ) .
{
' 1 .
\ .
(
4.
Sta rt the engine. Shut it off immediately if the
gauge registers no oil pressure. Repair lhe problem
before continuing.
Allow the engine to reach operating temperature
(fan comes on at least twice), The pressure should
be:
Engine Oil Temperature: 176'F (80'Cl
Engine Oil Pressure:
At ldle:
70 kPa (0.7 kgf/cm', 10 psi)
mtntmum
At 3,000 rpm: 300 kPa (3.1 kgf/cm',44 psi)
minimum
lf the oil pressure is NOT within specifications,
inspect these items:
. C h e c k t h e o i l s c r e e n f o r c l o g g i n g .
. Check the oil pump (see page 8-8).
. Check crankshaft and connecting rod bearing
clearances.
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