Honda Accord 2008 Manual page 426

07/11/02 09:04:05 61TA0000_110_0107
DTC P0141: Secondary HO2S (Sensor 2)
Heater Circuit Malfunction
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine.
4. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P0141 indicated?
YES − Go to step 5.
NO − Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the secondary HO2S (Sensor 2) and the ECM/
PCM.
5. Turn the ignition switch to LOCK (0).
6. Check the No. 7 ACG (15 A) fuse in the under-dash
fuse/relay box.
Is the f use OK ?
YES − Go to step 7.
−
NO Repair short in the wire between the
secondary HO2S (Sensor 2) and the No. 7 ACG
(15 A) fuse. Also replace the No. 7 ACG (15 A) fuse,
then go to step 23.
7. Disconnect the secondary HO2S (Sensor 2) 4P
connector.
8. At the secondary HO2S (Sensor 2) side, measure
resistance between secondary HO2S (Sensor 2) 4P
connector terminals No. 3 and No. 4.
SECONDARY HO2S (SENSOR 2) 4P CONNECTOR
Wire side of female terminals
Is there 5.4 7 .3 − at room temperature?
−
YES Go to step 9.
NO − Go to step 22.
9. At the secondary HO2S (Sensor 2) side, check for
continuity between body ground and secondary
HO2S (Sensor 2) 4P connector terminals No. 3 and
No. 4 individually.
SECONDARY HO2S (SENSOR 2) 4P CONNECTOR
Wire side of female terminals
Is there continuity?
−
YES Go to step 22.
NO − Go to step 10.
ＴＡ０８ＡＥＡＫ７２１０００９０１４１ＦＡＡＴ３０
＊０１
＊０２
(cont'd)
11-107