Honda Accord 2008 Manual page 404

07/11/02 09:03:19 61TA0000_110_0085
DTC P0116: ECT Sensor 1 Circuit Range/
Performance Problem
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 ECT SENSOR 1 in the DATA LIST with the
HDS.
Is about 17 6 °F ( 80 °C) or more, or 0.7 8 V or less
indicated?
−
YES Go to step 6.
NO − Go to step 3.
3. Note the value of ECT SENSOR 1 in the DATA LIST
with the HDS.
4. Start the engine. Hold the engine speed at
3,000 rpm without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle.
5. Check ECT SENSOR 1 in the DATA LIST with the
HDS.
Does ECT SENSOR 1 change 18 °F ( 10 °C) or
more?
−
YES Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at ECT sensor 1 and the ECM/PCM.
NO − Go to step 11.
6. Note the value of ECT SENSOR 1 in the DATA LIST
with the HDS.
7. Turn the ignition switch to LOCK (0).
8. Open the hood, and let the engine cool for 3 hours.
9. Turn the ignition switch to ON (II).
10. Check ECT SENSOR 1 in the DATA LIST with the
HDS.
Does ECT SENSOR 1 change 18 °F ( 10 °C) or
more?
YES − Intermittent failure, the system is OK at this
time. Check for poor connections or loose terminals
at ECT sensor 1 and the ECM/PCM.
NO − Go to step 11.
11. Turn the ignition switch to LOCK (0).
12. Replace ECT sensor 1 (see page 11-228).
13. Turn the ignition switch to ON (II).
14. Reset the ECM/PCM with the HDS.
15. Do the ECM/PCM idle learn procedure (see page
11-343).
16. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P0116 indicated?
−
YES Check for poor connections or loose
terminals at ECT sensor 1 and the ECM/PCM, then
go to step 1.
NO − Troubleshooting is complete. If any other
Temporary DTCs or DTCs are indicated, go to the
indicated DTC's troubleshooting.
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11-85