Honda Accord 2008 Manual page 479

07/11/02 09:05:56 61TA0000_110_0160
PGM-FI System
DTC Troubleshooting (cont'd)
DTC P1157: A/F Sensor (Sensor 1) AFS 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, and wait 1 minute.
4. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P1157 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).
11-160
9. Check for continuity between A/F sensor (Sensor 1)
4P connector terminal No. 1 and ECM/PCM
connector terminal C29.
A/F SENSOR (SENSOR 1) 4P CONNECTOR
AFS ＋
Wire side of female terminals
ECM/PCM CONNECTOR C (49P)
AFS ＋ (RED)
Terminal side of female terminals
Is there continuity?
YES − Go to step 10.
NO − Repair open in the wire between the ECM/
PCM (C29) and the A/F sensor (Sensor 1), then go to
step 12.
ＴＡ０８ＡＥＡＫ７２１０００９１１５７ＦＡＡＴ３０
(RED)
＊０１