Honda Prelude 1993 Service Manual page 146

VTEC
Troubleshooting Flowchart -
VTEC Pressure Switch (cont'dl
(From page 6-77)
1 0 v ?
VTEC PRESSURE
swtYcH
OIL PRESSURE GAUGE
COMMERCIALLY
AVAILABLE
I
ri
F.
iiri
;i
WASHER
Replaco.
NOTE: Keep measuting timo as shon
as Dossible becausg engine is running
with no load (less than one minutel.
SEALING EOLT
20 N.m (2.O kg-ln,
t 4 tb-ftt
GAUGE JONT ADAPTOR
SNAP.ON MT26-17
1 0 x l . O m m
. Use new wash€r when
installing the sealing bolt.
Inspoct lor an opon oa thort to
ground ln th. BLU/BLK wiro b.-
tw6€n tho 2P connccto. tnd D6
t.rmlnll ol th. EcM. It wko b oK,
rub.iltuto r known-good ECM
and ictort.
ls there approx. 10 V?
Measurs the voltage across the
8LU/BLK and BLK wires in 2P con-
nector.
Rgpolr opon d.ori In BLK wko bo-
twc€n lha 2P connoctor gnd body
ground.
ls ther6 approx. 10 V?
Turn the ignition switch OFF.
Reftove 10 mm soaling bolt €nd
connect oil prgss!re gauge.
Connoct a tachomster {se€ sec-
t i o n 1 ' 1 ) .
Start the €ngine and warm it uP
to normsl operating temperature.
Check oil prossure at engine
speed of
'l,OOO, 3,0OO and 5,0OO
rpm.
ls pressure below 50 kPa (O.5
kg/cm', 7 psi)7
In3pocl tho VfEc tol.nold v.lv!.
Disconnect th€
'l P
connector from
the VTEC solenoid valve,
Aftach the battory positive termi-
nal to the GRN/VVHT termin6l
{To p€ge 6-79)
6-78