Honda Civic 2002-2003 Service Manual page 309

PGM-FI System
MIL Circuit Troubleshooting (cont'd)
37. Measure voltage between ECM/PCM connector
terminal E7 and body ground.
ECM CONNECTOR E (3tP)
=
Wire side of female terminals
Is there battery voltage?
YES-Go to step 42.
NO-Go to step 38.
38. Turn the ignition switch OFF.
39. Remove the PGM·FI main relay 1 (A).
A
--
11-102
40. Measure voltage between PGM·FI main relay 1 4P
connector terminal No.4 and body ground.
PGM·FI MAIN RELAY 1
4P CONNECTOR
=
-B
(WHT/BlK)
Wire side of female terminals
Is there battery voltage?
YES-Goto step 41.
NO-Repair open in the wire between the NO.6
ECU (ECM) (15A) luse and the PGM·FI main relay 1.
•
41. Check for continuity between PGM·FI main relay 1
4P
connector
terminal NO.3 and ECM connector
terminal E7.
PGM-FI MAIN RELAY 1
4P CQrjNE·CTOIR
Wire side of
female terminals
ECM
CONNECTO~R~E;'~17;:;~M~~~E'D/"VEl)
Wire side of female terminals
Is there continuity?
YES- Test the PGM-FI main relay 1 (see page 22-
51). II the relay is OK, update the ECM il it does not
have the latest software, or substitute a known-
good ECM, then recheck (see page 11-6). If the
symptom/indication goes away with a known-good
ECM, replace the original ECM .•
NO-Repair open in the wire between the PGM-FI
main relay 1 and the ECM (E7) .•
•
•
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