Honda Civic 2002-2003 Service Manual page 276

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11. Check for continuity between ECM connector
terminal E6 and body ground.
ECM CONNECTOR E {31 PI
S02SHTC
{BLK/WHTI
=
Wire side of female terminals
/s there continuity?
YES-Repair short in the wire between the ECM
(E61 and the secondary H02S (Sensor 21 .•
NO-Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-61. If the symptom/indication
goes away with a known-good ECM, replace the
original ECM .•
12. Measure voltage between secondary H02S
(Sensor 21 4P connector terminal No.4 and body
ground.
SECONDARY H02S {SENSOR 21 4P CONNECTOR
1 2
3 4
IGl
{BLK/ORNI
':i.
=
Terminal
side
of male terminals
Is there battery voltage?
YES-Gotostep 13.
NO-Check the No.4 ACG (10AI fuse in the under-
dash fuse/relay box. If the fuse is OK, repair open in
the wire between the secondary H02S (Sensor 21
and No.4 ACG (lOA) fuse .•
13. Turn the ignition switch OFF.
14. Reconnect the secondary H02S {Sensor 214P
connector.
15. Disconnect ECM connector E (31P).
16. Turn the ignition switch ON (III.
17. Measure voltage between ECM connector terminal
E6 and A5.
A {31 PI
E
(31 PI
ECM CONNECTORS
PGl {BLKI
S02SHTC
(BLK/WHT)
1 2 3 4 5 6
8 9
Wire side of female terminals
Is there 0.1 V or less?
YES-Repair open in the wire between the ECM
(E61 and the secondary H02S (Sensor 2) .•
NO-Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-61. If the symptom/indication
goes away with a known-good ECM, replace the
original ECM .•
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