Honda 2002 Accord Manual page 390

Fuel Supply System
PGM-FI Main Relay Circuit Troubleshooting (cont'd)
13. Turn the ignition switch OFF, then ON (II) again,
and measure voltage between the ECM/PCM
connector terminals A15 and B2 within the first 2
seconds after the ignition switch is turned ON (II).
E C M / P C M C O N N E C T O R S
/
2 3 4 5 6
/
8 9 10
12 13 14 15
/
17 18 19 20 21
/
23 24
25 2 6 21 28 29 30
/
32
F L R ( G R N / Y E L )
P G 1 ( B L K )
B (25P)
1
2
3 4 5
/
7 8
9
10 11 12 13 14
/
16 17 18
19 20
21 22 23 24 25
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
Is there 1.0 V or less?
Y E S - T h e PGM-FI main relay may be faulty. Go to
step 14.
N O - S u b s t i t u t e a known-good ECM/PCM and
recheck (see page 11-5). If the prescribed voltage is
now available, replace the original E C M / P C M . •
14. Remove the PGM-FI main relay.
15. Connect battery power to the PGM-FI main relay 7P
connector terminal No. 2, and connect ground to the
PGM-FI main relay 7P connector terminal No. 1.
Then check for continuity between the PGM-FI
main relay 7P connector terminals No. 5 and No. 4.
NOTE: Use the terminal numbers shown. Ignore
the terminal numbers molded into the relay.
No. 2
No. 1
No. 3
No. 4
T o IG1
T o G R O U N D
T o S T . S W I T C H
T o E C M / P C M
(A15)
T o E C M / P C M
(B1, B9)
T o F U E L P U M P
Is there continuity?
Y E S - G o to step 16.
NO —Replace the PGM-FI main relay and retest.
16. Connect battery power to the PGM-FI main relay 7P
connector terminal No. 5, and connect ground to
the PGM-FI main relay 7P connector terminal No. 3.
Then check for continuity between the PGM-FI
main relay 7P connector terminals No. 7 and No. 6.
Is there continuity?
Y E S - G o to step 17.
NO —Replace the PGM-FI main relay and retest. •
17. Connect battery power to the PGM-FI main relay 7P
connector terminal No. 6, and connect ground to
the PGM-FI main relay 7P connector terminal No. 1.
Then check for continuity between the PGM-FI
main relay 7P connector terminals No. 5 and No. 4.
Is there continuity?
Y E S - T h e PGM-FI main relay is O K . B
N O - R e p l a c e the PGM-FI main relay and retest. •
11-114