Honda Civic Service Manual page 463

I
L
1D16Y5, D16Y8 engine with M/T 81642 engine)
I
D16Y7 engine:
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Check the IAC valve:
Disconnect the 3P connector from
the IAC valve.
Check the IAC valve:
D i s c o n n e c t t h e 2 P c o n n e c t o r
from the IAC valve.
Does the engine speed drop or
the engine stall?
Adiust the {base} idle speod (see
page 11-220 - 2231.It it's impos-
aible, clean the ports in lhe throt'
tle bodv,
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Check Ior vacuum leaks:
1. Turn the ignition switch OFF.
2 . R e m o v e t h e i n t a k e a i r d u c t
from the throttle body.
3. Start the engine and let it idle.
4. Put your finger on the lower
pon in the th.ottle body.
Ch€ck tor vecuum loaks, m.ke
sure the throttle valve is com_
pletaly closed, end repair as nec-
D o e s t h e e n g i n e s p e e d d r o P ?
Adiust the idle speed (see page
11-220 - 2231. lf it's impossible,
reolace the IAC velve.
UPPER
PORT
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