Acura Integra 1998 Service Manual page 273

I
PGM.FI
Primary
System
Heated Oxygen Sensor (HO2S) (Sensor 1l(cont'dl
PRIMARY HO2S {Sensor'l} CONNECTOR (C1131
PHO2S T--
rwHTl -
--l
. l 1
2 l
l 1 - {
0 t l s r l
Y , -
I
Wire side of female terminals
D o e s i t s t a y a t 0 . 1 V o r l e s s ?
Check lor a short in the wires:
1 . T u r n t h e i g n i t i o n s w i t c h O F F .
2 . D i s c o n n e c t t h e E C M c o n n e c
t o r D ( 1 6 P ) .
3 . 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
H O 2 S c o n n e c t o r t e r m i n a l N o . 1
a n d b o d y g r o u n d .
1 1 - 6 8
Check ror a short in the HO2S:
1 - T u r n t h e i g n i t i o n s w i l c h O F F .
2 . D i s c o n n e c t t h e P r i m a r y H O 2 S
( S e n s o r 1 ) c o n n e c t o r .
3 . S t a n t h e e n g i n e a n d l e t i t ; d l e .
4 . C h e c k t h e P r i m a r y H O 2 S ( S e n
s o r 1 ) o u t p u t v o h a g e w i t h t h e
(From page '11 67i
S u b s l i t u t e a k n o w n - g o o d E C M
and recheck. lf symptom/indica-
tion goes away, replace lhe origi-
n a l E C M .