Honda Civic Service Manual page 510

Fuel Supply System
-
Repair op€n or short in the
wir€ betlveen the PGM-FI main
relay and the No. 31 STARTER
SIGNAL 17.5 A) fuse.
-
RoDlace the No. 31 STARTER
S I G N A L { 7 , 5 A l t u s e i n t h e
under-dash luse/rolay box.
ls there battery voltage?
Check tor an open in the wire
(FLR linel:
1. Turn the ignition switch OFF.
2. Disconnect the ECM/PCM con-
nector A (32P).
3. Check for continuity between
the PGM-FI main relay 7P con-
nector terminal No. 1 and ECM/
PCM connector terminal A16.
Repair open in the wir6 botween
t h e E C M / P C M ( A 1 6 1 a n d r h e
PGM-FI main relay.
Check for an open in the wires
{lGPl, lGP2 line3):
1. Reconnect the ECM/PCM con-
nector A {32P).
2 . R e c o n n e c t t h e P G M - F l m a i n
relay connector.
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
ECN4/PCM connector terminals
8 1 a n d 8 2 0 , a n d b e t w e e n
B g a n d 8 2 0 .
-
Repair open in the wire bet-
ween th. ECM/PCM (81, Bg)
snd the PGM-F main rolay.
-
Roplace th€ PGM-FI main relav.
Chock tor an open in th6 ECM/
PCM:
1. Turn the ignition switch OFF.
2 . M e a s u r e v o l t a g e b e t w e e n
ECM/PCM connector terminals
A16 and 82 when the ignition
switch is first turned ON lll) for
Sub3titute . known-good ECM/
PCM and rochock. lf prescribed
vohege is now available, replace
the original ECM/PCM.
ls there 1.0 V or less?
C h o c k t h e P G M - F l m . i n r 6 l a y
{see p.ge 11-2371.
PGM-FI Main Relay (cont'd)
_._(9x . qq -gqerll _
PGM.FI MAIN FELAY 7P CONNECTOR {C4€}
FLR
ECM/PCM CONNECTORS
A (32P1
Wire side ot female terminals
W i r e s i d e o f f e m 6 l e t e r m i n a l s
ECM/PCM CONNECTOR B {25PI
IGP2 {YEL/BLKI
IGRN/YEL}
IGP2
(YEL/BLKI
W i r e s i d e o f f e m a l e t e r m i n a l s
11-240
I J
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