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Cylinder Head
DTC Troubleshooting (cont'd)
10. Measure voltage across the VTEC oil pressure
s w i t c h harness 2P connector.
V T E C O I L P R E S S U R E S W I T C H H A R N E S S
2 P C O N N E C T O R
W i r e s i d e o f f e m a l e
t e r m i n a l s
Is there battery
voltage?
Y E S - G o t o step 11.
NO —Repair open in the w i r e between the VTEC oil
pressure switch and G101. If the wire is OK,
substitute a known-good ECM/PCM and recheck.B
11. T u r n the ignition switch OFF.
12. Disconnect the VTEC solenoid valve 1P connector.
13. Check f o r continuity on the VTEC solenoid valve
between the solenoid valve 1P connector terminal
and body g r o u n d .
V T E C S O L E N O I D V A L V E
1P C O N N E C T O R
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
Is there
14-30
Q ?
Y E S - Go to step 14.
NO—Replace the VTEC solenoid valve.I
14. Remove the VTEC oil pressure switch (A) and
install the special tools as s h o w n , then reinstall the
VTEC oil pressure switch.
0 7 4 0 6 - 0 0 7 0 3 0 0
0 7 N A J - P 0 7 0 1 0 A
2 2 N m {2.2 k g f m ,
16 I b f f t )
0 7 4 0 6 - 0 0 2 0 2 0 1
o r
0 7 M A J - P Y 4 0 1 1 A a n d
0 7 M A J - P Y 4 0 1 2 0
15. Reconnect the VTEC solenoid valve 1P connector
and VTEC oil pressure switch 2P connector.
16. Connect a tachometer.
17. W a r m up the engine t o normal operating
temperature (cooling fan comes on).
18. Check oil pressure at engine speeds of 1,000, 2,000
and 4,000 r p m . Keep measuring t i m e as short as
possible because the engine is running w i t h no
load (less than one minute).
Is pressure
below 49 kPa (0.5 kgf/cm
2
,
7 psi)?
Y E S - G o t o step 19.
NO —Inspect the VTEC solenoid valve (see page 6-
1 0 ) . •
19. Turn the ignition switch OFF.
20. Disconnect the VTEC solenoid valve 1P connector.
2 1 . Attach the battery positive t e r m i n a l to the VTEC
solenoid valve terminal.
22. Start the engine and check oil pressure at an engine
speed of 3,000 r p m .
Is pressure
above 390 kPa (4.0 kgf/cm
2
,
57 psi) ?
Y E S - G o to step 23.
NO —Inspect the VTEC solenoid valve (see page 6-
10).a
6-8
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Table of Contents
Troubleshooting
