Honda Civic 1998 Service Manual page 287

Check tor an open or short in the
wire (lG1 linell
M e a s u r e v o l t a g e b e t w e e n t h e
HO2S 4P connector term;nals No. 3
( D 1 6 Y g e n g i n e : N o . 4 ) a n d b o d y
ground-
-
Ropair open or short in the
wire between Prim.ry HO2S
{Sensor 1), (No. 15 ALTERNA-
TOR SP SENSORI 17.5 A) tuie
and Socondery HOzS, Scnsot
2l+,
-
RoDlac. the No. 15 ALTEBNA-
TOR SP SENSOR l7.s Al tuso.
Check fo. an open in the wire
{PO2SHTC, SO2SHTC* linel:
1. Turn the ignition switch OFF.
2. Reconnect the HO2S 4P con-
3. Disconnect the ECM/PCM con
nector A (32P).
4. Turn the ignition switch ON (ll).
5. Measure voltage between the
ECM/PCM connector terminals
46 and A10 (A5 and A10)*.
Repair open in the wire betweon
ECM/PCM {46, A5lt and HO2S
{Primary, Secondary*1.
ls there 0.1 V or less?
Substituta a known-good ECM/
PCM and recheck. lt 3ymptom/
indication goes away, replace
the original ECM/PCM.
PRIMARY HO2S ISENSOR 1) ilP CONNECTOR
(cr23t
SECONDARY HO2S (SENSOR 2l irP
coNNECTOR (C12s)r
1 1 2 l
- r l
t 3 t { l
lcl
L_r__.r.____J
|BLK/ O)
YELI Y
Wire side ot female terminals
*: P0141
**: D16Y8 engine
SECONDABY HO2S
{SENSOR 2I {P CONNECTOR
tc782t*r
IGl {BLK/WHTI
-l.
(v)
Y
Wiro side of female torminals
Wire side ol female terminals
so2HTClBtX/WHTtr FO2SHTCIBLK/WlfTl
{From page
'11 98}
Chock lor a short in lhe wire
{PO2SHTC, SO2SHTC. lino):
1. Turn the ignition switch OFF.
2. Disconnect the ECM/PCM con-
nector A {32P).
3. Check for continuity between
the ECM/PCM connector termi-
nal A6 (A5)* and body ground.
ReDair short in tho wi.s bstween
ECM/PCM (46, As*l and HO2S
lPrimary, S.condary.l.
ls there continuity?
Subslitute r known-good ECM/
PCM and recheck. lf symptom/
indication goes away. r€place
the original ECM/FCM.
ECM,/PCM CONNECTOR A I32PI
so2sHrc I
tBLK/wHn-J
pozsxrc E/
IBLK/WHTI ^
r-----{vF
T-r
PG1
IBLK)
6
r l l a l g l r o
l l
12
t 3 t 5 t 6
ta
t 0 20 2 1 2 3 2a
27 2A
a 3o
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