Honda Civic Service Manual page 164

(From page 6-52)
Test the VTEC Solenoid Valve:
1. Turn the ignition switch OFF
2. Disconnect the VTEC solenoid
valve 1P connector,
3 . A t t a c h t h e b a t t e r Y P o s r t r v e
terminal to the VTEC solenoid
valve terminal.
4 . S t a r t t h e e n g i n e a n d c h e c k
t h e o i l P r e s s u r e a t e n g i n e
speed ol5,000 rPm
lrcoect the VTEC solenoid valve
(see page S54)
ls the pressure above 390 kPa
(4.0 kgt/cm?, 57 Psi)?
Test the VTEC Pressure Switch:
With the battery Positive terminal
connected to the VTEC solenoid
valve, measure voltage between
the ECM connector terminal C10
and body ground.
ls there battery voltage above
5 , 0 0 0 r p m ?
Test the VTEC Solenoid Valve
Wire:
1. Turn the ignition switch OFF
2. Check for continuitv between
t h e V T E C s o l e n o i d v a l v e 1 P
c o n n e c t o r t e r m i n a l a n d t h e
ECM connector terminal 812
Repair open in the wire between
the ECM lB12| and VTEC aolenoid
Test lhe VTEC Solenoid Valve
Wire:
Check for continuity between the
VTEC solenoid valve'lP connector
terminal and body ground.
Repair short in the wiro b€'tween
the ECM ( 812) and VTEC aolenoid
S u b s t i t u t e a k n o w n ' g o o d
E C M
and recheck. lI sYmptom/indica'
tion goes away. repleca the origi-
n a l E C M .
VTEC SOLENOID VALVE
1P CONNECTOR
T e r m i n a l s i d e o f
m a l e t e r m i n a l
VIEC SOLENOID
VALVE
1P CONNECIOR
ECM CONNECTOR
B l2sP)
ECM CONNECTOR C (31PI
WM
Wire side ot female
termrnals
VTEC SOLENOID VALVE
1P CONNECTOR
I ' f t
I
I
Wire side of female
termanal
6-53