Honda Civic Service Manual page 471

I
I
L
IACV N
(oRN)*
IACV P
{BLK/BLU'
ECM/PCM
CONNECTON B (25PI
IACV N
(oRNt.
Wire side of female terminals
IAC VALVE 3P CONNECTOR
IACV N
IACV P
IACV P
IBLK/BLUI
I G P
T e r m i n a l s i d e o f m a l e
(From page 11 200)
IAC VALVE 3P CONNECTOR {C1O9I
IGP (YEL/BLK)
Wire side of female terminals
Check toi an open in thg wire
{lGP line):
1. Turn the ignition switch OFF.
2. Disconnect the IAC valve 3P
connector.
3. Turn the ignition switch ON (ll)
4, At the wire harness, measure
voltage between IAC valve 3P
connector terminal No. 2 and
body gro!nd.
Repair open in the wire between
the IAC valve and PGM-FI main
reraY.
Check for an open in the wires
IIACV P. IACV N' lines):
1. Turn the ignition switch OFF.
2. Disconnect the ECM/PCM con-
nector A (32P).
3. Check lor continuity between
IAC valve 3P connector termi'
nal No. 3 and ECM/PCM con-
n e c t o r t e r m i n a l B 6 ( a n d
beNveen IAC valve 3P connec
t o r t e r m i n a l N o . 1 a n d E C M /
PCM connector terminal 815)*.
Repair open in the wiro ltstwcen
the IAC valvo and €CM/PCM (86,
815'1.
Check for a shon in the wires
(IACV P, lACv N* linesl:
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 8 6 a n d 8 1 5 *
individually.
Reoair short in the wiro Mweon
the lac valve end ECM/FCM (86,
815*).
ls there continuity?
Check the IAC valv€:
l. Disconnect the IAC Valve 3P
connector,
2. Measure resislance between
IAC Valve 3P connector termi
nal No. 2 and terminals No 1
and No.3 individually
ls there 16 - 28 O?
Substituta . known-good
ECM/
PCM and rochcdc f 3ymptom/indi
cation go€a away, r€dace the origi
nal ECM/Pqvl.
"r IACV N line
N
11-201