Pgm-Fl Main Relay Circuit - Honda S2000 Service Manual

Fuel Supply System
PGM-Fl Main Relay Circuit Troubleshooting (cont'd)
1 3 . T u r n t h e i g n i t i o n s w i t c h O F F , t h e n O N ( l l ) a g a i n ,
and measure voltage between ECM connector
t e r m i n a l s 4 1 5 a n d 8 2 w i t h i n t h e f i r s t 2 s e c o n d s
after the ignition switch is turned ON (ll).
ECM CONNECTORS
Wire side of female terminals
ls there 1.0 V or less?
YES The PGM-Fl main relay may be faulty; go to
s t e p 1 4 . 1
NO Substitute a known-good ECM and recheck
(see page 1 1-5). lf the voltage is now normal,
r e p l a c e t h e o r i g i n a l E C f M . I
1 4 . R e m o v e t h e P G M - F I m a i n r e l a y .
A l32Pl
11-104
15. Connect battery power to PGM-FI mainrelayTP
connector terminal No. 2 and connect ground to the
P G M - F l m a i n r e l a y 7 P c o n n e c t o r t e r m i n a l N o . 1 .
Then check for continuity between PGM-Fl main
relay 7P connector terminals No. 5 and No. 4.
N O T E : U s e t h e t e r m i n a l n u m b e r s s h o w n . l g n o r e
the terminal numbers molded into the relay.
ls there continuity?
YES Go to step 16.
NO Replace the PGM-Fl main relayand recheck
t h e c i r c u i t . l
16. Connect battery power to PGM-Fl mainrelayTP
connector terminal No. 5. and connect ground to
PGM-Fl main relay 7P connector terminal No. 3.
Then check for continuity between PGM-FI main
r e l a y 7 P c o n n e c t o r t e r m i n a l s N o . 7 a n d N o . 6 .
ls there continuity?
YES Go to step 17.
NO Replace the PGM-Fl main relay and recheck
t h e c i r c u i t . I
17. Connect battery powerto PGM-FI main relay 7P
connector terminal No. 6, and connect ground to
P G M - F l m a i n r e l a y T P c o n n e c t o r t e r m i n a l
N o . 1 .
Then check for continuity between PGM-Fl main
r e l a y 7 P c o n n e c t o r t e r m i n a l s N o . 5 a n d N o . 4 .
Is thete continuity?
Y E S T h e P G M - F l m a i n r e l a y i s O K . l
N O R e p l a c e t h e P G M - F l m a i n r e l a y a n d r e c h e c k
t h e c i r c u i t . I