Engine Control Module/Powertrain - Honda Civic Service Manual

I
Engine Control Module/Powertrain Control Module (ECM/PCM)
t'96 - 98 Models,'99 - 00 Dl6Y5 engine with M/Tl
L
NOTE: lf th is svmptom is intermittent, check for a loose fuse No. 25 {METER 7.5 A) in the
underdash {use/relay box, a poor connection at ECM/PCM terminal A18, or an intermit
tent ooen in the GRN/ORN wire between the ECM/PCM (A18) and the gauge assemblv.
ECM/PCM CONNECTOR A I32PI
PGl {BLKI
Wire side ot female terminals
ECM/PCM CONNECTOR A (32P}
Wire side of female terminals
(cont'd)
1 1- 10 7
The Malfunc{ion Indicator Lamp
{MlLl never comes on (even lor
two secondsl atter ignition is
turned on.
Turn the ignition switch ON (ll).
-
Repair short or open in the
wile botwoen No. 25 {M€TERI
17,5 Altus€ and gau99 assem'
bty.
-
Replaco No.25 IMETERI (7,5
A)tuse.
ls the low oil pressure light on?
Try to start the engine.
Does the engine stan?
Check lor an open in the wiles
{PG linosl:
1. Turn the ignition switch ON (ll).
2 . l d e a s u r e v o l t a g e b e t w e e n
b o d y g r o u n d a n d E C M / P C M
connector terminals A10 and
A23 individually.
Check tor an open in the wire ot
bulb (MlL line):
1. Turn the ignition switch OFF.
2 . C o n n e c t t h e E C M / P C M c o n -
nector terminal A'18 to body
ground with a jumper wire.
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 )
b e t w e e n E C M / P C M a n d G 1 0 1
(localod at the thetmostat hous_
ingl that had more than 1.0 V.
ls thore less than 1.0 V?
Substituto . known-good ECM/
PCM and recheck. It symptom/
indication go6s away, roPlace
the origin.l ECM/PCM.
-
R e p a i r o p e n i n t h € w i r e s
betwoen ECM/PCM lAl8l and
gaug6 a$embly.
-
Replace the MIL bulb,
ls the MIL on?
Substitute a known-good ECM/
PCM and .echeck. lf symptom/
indication goes away, replaco
the origin.l ECM/PCM.
2 6
8
l 0 1 1
12
l 3 t 5 t 6 1 t
I t
19
20
22 23
2a
25
27 xt 30
MrL
I luanpen wrnr
IGRN/ORN) I
! 1 ,