Engine Control Module {Ecmi - Acura Integra 1998 Service Manual

I
I
I
t :
PGM-FI System
Engine Control Module {ECMI
, i
I
{
il
i
NOTE: lf this svmotom is intermittent, check for a loose fuse No. 25 METER (7.5A) in the under_
dash fuse/relay box, a ooor connection at ECM terminal A18, or an intermittent open in the
GRN/ORN wire between the ECM (A18) and the gauge assembly.
Wire side of female terminals
I
The Mellunction Indicator Lamp
(MlLl never com€3 on leven fol
two secondsl alter ignition is
lurn6d ON lll).
T u r n t h e i g n i t i o n s w i t c h O N ( l l i .
-
Repair short or open in th€
wire betwe€n No. 25 METER
{7.5 A}fuse and gauge assem-
bty.
-
ReDlaco No.25 METER 17.5 A)
fuse.
l s t h e l o w o i l p r e s s u r e l i g h t o n ?
T r y t o s t a r t t h e e n g i n e ,
Check for an open in ih6 wires
IPG lines):
1. Turnthe ignition switch ON (ll).
2 . M e a s u r e v o l t a g e b e t w e e n
body ground and ECM connec-
tor terminals A10 and A23 indi-
vidually.
Chock for an open in the wire or
bulb:
1. Turn the ignition sw;tch OFF.
2. Connectthe ECM connector ter
minal 418 to body ground with
3. Turn the ignition switch ON (ll).
R e p a i r o p e n i n t h e w i r e ( s l
between ECM and G101 (located
at thermostat housingl that had
more than 1.0 V.
ls there less than 1.0 V?
Substitute . known-good ECM
and .echeck, lf symptom/indica-
tion goes away, replace the origi-
n a l E C M .
-
R € p a i r o p e n i n t h e w i r e s
b€tweon ECM {A18land gaug€
ess€mbly.
-
Replace the MIL bulb.
ls the MIL on?
S u b s t i t u t e a k n o w n - 9 o o d E C M
and rech6ck. It symptom/indica-
tion goes away, repbce the origi-
n a l E C M .
ECM CONNECTOR A {32P)
1 5 1 6 1 7 1 8 1 9
r 2 3 a l
1 5 G
a 9 1 0 1 1
1 2 , , t 5 1 6 1 t t 9 20 / 2 2
2 3 2 a
2 5 2 6 2 1 1 18 4
t t -
M I L
JUMPER
(GRN/ORN) I WIRE