Honda Civic 2002-2003 Service Manual page 310

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42, Reconnect ECM connector E (31P),
43, Turn the ignition switch ON (II),
44, Measure voltage between body ground and ECM
connector terminals A2 and A3 individually,
ECM CONNECTOR A 131 PI
IGP21YEL/BLKI IGP11YEL/BLKI
=
Wire side of female terminals
Is there battery voltage?
YES-Go to step 51,
NO-Go to step 45,
45, Turn the ignition switch OFF,
46, Remove the PGM·FI main relay 1 (A),
A
47, Turn the ignition switch ON (II),
9
=
48, Measure voltage between PGM·FI main relay 1 4P
connector terminal No, 2 and body ground,
PGM·FI MAIN RELAY 1
4P CONNECTOR
2
=
Wire side of female terminals
Is there battery voltage?
YES~-~Go to step 49,
+B
IWHT/BLKI
NO-Repair open in the wire between the No, 6
ECU (ECM) (15A) fuse and the PGM·FI main
relay 1 ,.
49, Turn the ignition switch OFF,
50, Check for continuity between PGM·FI main relay 1
4P connector terminal No.1 and ECM connector
terminals A2 and A3 individually,
PGM·FI MAIN RELAY 1
4P CONNECTOR
I
IGPl IYEL/BLKI
IGP2 IYEL/BLKI
ECM IGPl IYEL/BLK}
CONNECTOR~~J;~~~~~~~~
E131P} 8 9
Wire side of female terminals
Is there continuity?
Wire side
of female
terminals
YES-Replace the PGM·FI main relay 1,.
NO-Repair open in the wire between the PGM·FI
main relay 1 and the ECM (A2, A3),.
(cont'd)
11-103