Honda Accord 2008 Manual page 505

07/11/02 09:10:08 61TA0000_110_0186
PGM-FI System
DTC Troubleshooting (cont'd)
DTC P2252: A/F Sensor (Sensor 1) AFS
Circuit Low Voltage
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 P2252 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 A/F sensor (Sensor 1) and the ECM/PCM.
5. Turn the ignition switch to LOCK (0).
6. Jump the SCS line with the HDS.
7. Disconnect the A/F sensor (Sensor 1) 4P connector.
8. Disconnect ECM/PCM connector C (49P).
11-186
−
9. Check for continuity between ECM/PCM connector
terminal C30 and body ground.
ECM/PCM CONNECTOR C (49P)
Terminal side of female terminals
Is there continuity?
YES − Repair short in the wire between the ECM/
PCM (C30) and the A/F sensor (Sensor 1), then go to
step 11.
NO − Go to step 10.
10. Replace the A/F sensor (Sensor 1) (see page
11-225).
11. Reconnect all connectors.
12. Turn the ignition switch to ON (II).
13. Reset the ECM/PCM with the HDS.
14. Do the ECM/PCM idle learn procedure (see page
11-343).
ＴＡ０８ＡＥＡＫ７２１０００９２２５２ＦＡＡＴ３０
AFS − (RED/YEL)
＊０１