Honda Civic Service Manual page 469

t
lFrom page 11-198)
Chock for an opon in tho wilo
(lGP lins):
'1. Turn the ignition switch OFF.
2. Disconnect the IAC valve 3P
connector,
3. Turn the ignition switch ON (ll),
4. At the wire hamess, measure
voltage between IAC valve 3P
connector terminal No. 2 and
body ground.
Raprir op€n in th€ wirc botw.€n
th. IAC vrlv6 and PGM.FI mtin
rehy.
ls there baftery voltage?
Check for rn open in tho wil.s
(IACV P,IACV Nr linesl:
1. Turn the ignition switch OFF.
2. Disconnect the ECM/rcM con-
necror A (32P).
3. Check for continuity between
IAC valve 3P connecto. terma_
nal No. 3 and ECM/PCM con-
n e c t o r t e r m i n a l A 1 4 ( a n d
between IAC valve 3P connec-
tor terminal No. 1 and ECM/
rcM connector terminal A13l*.
Ropair opan in tha wito bgtwoon
ths IAC vrlv! rnd ECM or PCM
{A14, 413.1.
Check for e lhort in tho wiros
(IACV e nCV Nr linc):
C h e c k f o r c o n t i n u i t y b e t w e e n
body ground and ECM/PCM con-
n e c t o r t e r m i n a l s A 1 4 a n d A 1 3 *
individually.
Rapair rhort in thr wi]. batwaon
th. IAC v.lvc .nd ECM/PCfvl {A14,
Ar3.t.
ls there continuity?
Check the IAC V.lvo:
1. Disconnect the IAC Valve 3P
3. Measure resistance between
IAC Valve 3P connector termi-
nai No. 2 and terminals No. 1
and No. 3 individuallY.
ls there 16 - 28 O?
Subrtituto a known-good ECM/
PCM and r€ch€d( lt .vmptom/indi
calioo gp€. .way, ruplace tho odgi
ml Eqvt/FCM.
IAC VALVE 3P CONNECTOR IClG'}
IGP IYEL/BIX)
tAcv N (oRNt*
IACV N
Wirc side of lemale teaminals
IAC VALVE 3P CONNECTOR
IACV P
Terminal side of mal6
tetmtnats
(32P)
l l
toRNt*
t I
IACV P
(BLK/8LU}
ECM/PCM
CONNECIOR A
IACV P
(BLK/BLU}
I
o
,
t l 0
' t 1
1Z
13 ta
1 5
l 6
1 7
ta
l 9
m x2
23
21
25
21
i6
a
3o
,|
3 1 .
5 7
a
I
l 0 t l
1 2 t 3
r . l r s
t 5 1 1
r8
t 9 20
22
23
2a
27
2a
A
30
IACV P (BLK/SLU}
r l a
-: IACV N line
1 1 - 1 9 9