Honda ACCORD HYBRID 2005 Service Manual page 381

DTC P1116: ECT Sensor 1 Performance
Problem
NOTE: If DTC P0096 is stored at the same t i m e as DTC
P1116, troubleshoot DTC P0096 first, then recheck for
DTC P1116.
1. Check for poor connections or loose terminals at
ECT sensor 1 and ECT sensor 2.
Are the connections and terminals OK?
Y E S — G o t o step 2.
NO—Repair the connectors or terminals, then go to
step 27.
2. Turn the ignition switch ON (II).
3. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Are DTC P1116 and P2183 indicated at the same
time?
Y E S — G o t o step 15.
N O — G o t o step 4.
4. Start the engine, and let it idle 10 minutes.
5. Check ECT SENSOR 1 in the DATA LIST w i t h the
HDS.
Is about 129 °F (54 °C) or less, or 1.54 V or more
indicated?
Y E S — R e p l a c e ECT sensor 1 (see page 11-215), then
go to step 27.
N O — G o t o step 6.
6. Turn the ignition switch OFF.
7. Drain the coolant (see page 10-6).
8. Remove ECT sensor 1 (see page 11-215).
9. A l l o w ECT sensor 1 to cool to 77 °F (25 °C).
10. Note the outside temperature.
11. Connect ECT sensor 1 to its 2P connector, but do
not install it into the engine.
12. Turn the ignition switch ON (II).
13. Note the value of ECT SENSOR 1 quickly in the
DATA LIST w i t h the HDS.
14. Compare the value of ECT SENSOR 1 and the
outside temperature.
Does the value of ECT SENSOR 1 differ 5.4 °F
(3 °C)or more?
Y E S — R e p l a c e ECT sensor 1 (see page 11-215), then
go to step 27.
NO—Intermittent failure, system is OK at this t i m e .
Check for poor connections or loose terminals at
ECT sensor 1, ECT sensor 2, and the P C M . B
15. Start the engine, and let it idle 10 minutes.
16. Check ECT SENSOR 1 in the DATA LIST w i t h the
HDS.
Is about 118 °F (48 °C) or less, or 1.75 V or more
indicated?
Y E S — R e p l a c e ECT sensor 1 (see page 11-215), then
go to step 27.
NO—Go to step 17.
17. Let the engine idle 10 minutes.
18. Check ECT SENSOR 2 in the DATA LIST w i t h the
HDS.
Is about 131 °F (55 °C) or less, or 1.50 V or more
indicated?
Y E S — R e p l a c e ECT sensor 2 (see page 11-218), then
go to step 27.
N O — G o t o step 19.
(cont'd)
11-141