Honda Accord 2008 Manual page 399

07/11/02 09:02:40 61TA0000_110_0080
PGM-FI System
DTC Troubleshooting (cont'd)
DTC P0112: IAT Sensor 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. Check the IAT SENSOR in the DATA LIST with the
HDS.
Is about 356 °F ( 180 °C) or more, or 0.08 V or less
indicated?
−
YES Go to step 3.
NO − Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at the IAT sensor and the ECM/PCM.
3. Turn the ignition switch to LOCK (0).
4. Disconnect the MAF sensor/IAT sensor 5P
connector.
5. Turn the ignition switch to ON (II).
6. Check the IAT SENSOR in the DATA LIST with the
HDS.
Is about 356 °F ( 180 °C) or more, or 0.08 V or less
indicated?
−
YES Go to step 7.
NO − Go to step 11.
7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect ECM/PCM connector B (49P).
11-80
10. Check for continuity between MAF sensor/IAT
sensor 5P connector terminal No. 5 and body
ground.
MAF SENSOR/IAT SENSOR 5P CONNECTOR
Wire side of female terminals
Is there continuity?
−
YES Repair short in the wire between the IAT
sensor and the ECM/PCM (B32), then go to step 13.
NO − Go to step 18.
11. Turn the ignition switch to LOCK (0).
12. Replace the MAF sensor/IAT sensor (see page
11-227).
13. Reconnect all connectors.
14. Turn the ignition switch to ON (II).
15. Reset the ECM/PCM with the HDS.
16. Do the ECM/PCM idle learn procedure (see page
11-343).
ＴＡ０８ＡＥＡＫ７２１０００９０１１２ＦＡＡＴ３０
IAT (RED/YEL)
＊０１