Honda Civic Service Manual page 381

Engine Control Module/Powertrain Control Module (ECM/PCM)
('95 - 00 Models except Dl6Y5 engine with M/T)
NOTE:
. When there is no Diagnostic Trouble Code lDTC) stored, the MIL will staY on if the SCS
seruice connector is connected and the ignition switch is on.
. lf this symptom is intermittent, check for:
- A loose No. 25 (METER) {7.5 A) fuse in the underdash fuse/relay box
- A loose Fl E/M (15 Alluse in the undeFhood fuse/relay box
-
A loose No. 13 FUEL PUMPfuse (15 A) in the under-dash fuse/relay box
-
An intermittent shon in the wire between the ECM/PCM (A18) and the gauge assem'
-
an intermittent short in the wire between the ECM/PCM (C19) and the MAP sensor
-
An intermittent short in the wire between the ECM/PCM {C28), the TP sensor, the
EGR valve lift sensor (D16Y5 engine) and/or the Fuel tank pressure sensor ('96 D16Y8
engine (coupe),'97 D16Y7 engine lcoupe: KL model, sodan: KL (LX) model)"g7
Dt6Y8 engine (coupe: all mod;ls, sedanl KL model),'98-all models,'99-al' models'
'00-all models.
-
PGM'FI main relay
. See the oBD ll scan tool or Honda PGM Tester user's manuals for specific operating
instructrons,
ECM,/PCM CONNECTOR A I32PI
Wire side of {emale terminals
The Mrlfunction Indicator LamP
{MlL) never comes on {even tor
two seconds) after ignition is
turned ON lll).
Turn the ignition switch ON lll).
-
Repair shott or open in tho
wire bstwoon No. 25 IMETER)
l?.5 A)tuse and gauga tsom_
blv.
-
Reolace No. 25 (METERI (7.5
Alluse.
ls the low oil pressure light on?
Try to start the engine.
Check for an opon in the wire or
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 A18 to body
ground with a iumper wire.
3. Turn the ignition switch ON (ll)
Does the engine start?
- R e p a i r o p e n i n t h o w i r e 3
betwoon ECM/PCM (A18) and
gaugo .*tembly.
-
Rool.ce the MIL bulb.
Substitute a known-good ECM/
PCM and rochoc&. lf sYmptom/
indication goes sw6y, repl.ce
tho original ECM/PCM.
Turn the ignition switch OFF.
Inspect Fl E/M (15 A)fuse in the
underhood Iuse/relay box.
R o p . i r s h o r t i n t h e w i r c
betwo€n Fl E/M (15 A) luso
and PGM-Fl mrin rGl.y.
Reol.ce Fl E/M (15 A)tusa.
lnspect No. 13 FUEL PUMP {15 A}
luse in the under-dash fuse/relay
- R e o a i r s h o r t i n t h e w i r o
between No. 13 FUEL PUMP
115 Al luse sod PGM-FI main
relay.
-
Reolace No. 13 FUEL PUMP
115 A) tuse.
( T o p a g e 1 1 1 1 2 )
(cont'd)
1 1 - 1 1 1
. f ,