Honda Civic Service Manual page 380

PGM-FI System
( F r o m p a g e 1 1 - 1 0 9 )
Replace the sensor that caused
the light to go out.
Does the N4lL go OFF?
Check fo. a short in the wi.os
(VCC lines):
':. Turn the ignition
switch OFF.
2 . D i s c o n n e c t t h e E C M / P C M
connector D (16P).
3. Check for continuity between
b o d y g r o u n d a n d E C M / P C M
c o n n e c t o r t e r m i n a l s D 4 a n d
D10 individually.
Ropair short to body ground
in the wire betweon ECM/
PCM {O4) and MAP s6n3or.
Repair short to body ground
in the wire between ECM/
PCM lD10l, the TP sensor, the
EGR valve lift sensor {D16Y5
engine) and/or the Fuel tank
pressure sensor {'96 Dl6Yg
e n g i n e l c o u p e ) , ' 9 7 D 1 6 Y 7
e n g i n e ( c o u p e : K L m o d e l ,
s e d a n : K L ( L X l m o d e l ) , ' 9 7
D 1 6 Y 8 e n g i n e ( c o u p e : a l l
models, sedan: KL model. €8-
allmodelsl.
ls there continuity?
Check tor rn open in the wires
(lGP lines):
1. Disconnect the fuel injectors
and IAC valve connectors,
2. Turn the ignition switch ON (ll).
3 . M 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
c o n n e c t o r t e r m i n a l s A 1 1 a n d
424 indivjdually.
-
Repair open in the wirels)
b e t w e e n E C M / P C M ( A 1 1 ,
A24land PGM-Fl main relay.
-
Check for poor connections
or loose wiras at the PGM-FI
main relay,
-
Test the PGM-FI mdin relav
lsee pag6 11-237).
ls there battery vohage?
Check for an open in the wires
(LG line3):
1. Reconnect all sensor connec
tors.
2. Reconnect the ECM/PCM con-
nector D (16P).
3. Turn the ignition switch ON (ll).
4 . M 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
c o n n e c t o r t e r m i n a l s A g a n d
A22 individually.
R e p a i r o p e n i n t h e w i r o l g l
b€twe€n ECM/PCM {A9, A22} and
G101 that had more than 1.0 V.
ls there less than 1.0 V?
Substitute 6 known-good ECM/
PCM and r€check. lf symptom/
indication 9o€s away, replace
the original ECM/PCM.
Engine Control Module/Powertrain Control Module (ECM/pCMl
('96 - 98 Models, '99 - 00 D16Y5 engine with M/Tl (cont,dl
ECM/PCM CONNECTOR D {16P}
Wire side of female terminals
ECM/PCM CONNECTOR A (32P}
Wire side of female terminals
1 1 - 1 1 0
LG1
VCCl {YEL/RED}
IGP 1
{YEL/BLKI
2 I 1 1
12 1 3 l 5 t 6
I t
t 8 t 9
20 23
21
25
27
2a
29 3 0
IGP 2
(YEL/BLKI
v ) ( l
{8RN/
BLK)
I
2
5 8 t o
l 1
'12 t t 1 1 t 5
l 6 1 7 t 8 t 9 20 23 2a
2A
23 30
LG2
{8RN/
8LK}