Honda ACCORD HYBRID 2005 Service Manual page 326

PGM-FI System
D T C T r o u b l e s h o o t i n g ( c o n t ' d )
DTC P0116: ECT Sensor 1 Range/
Performance Problem
1. Turn the ignition switch ON (II).
2. Check ECT SENSOR 1 in the DATA LIST w i t h the
HDS.
Is about 176 °F (80 °C) or higher, or 0.78 V or less
indicated?
Y E S — G o t o step 6.
N O — G o t o step 3.
3. Note the value of ECT SENSOR 1 in the DATA LIST
w i t h the HDS.
4. Start the engine. Hold the engine speed at
3,000 r p m w i t h o u t load (in Park or neutral) until the
radiator fan comes o n , then let it idle.
5. Check ECT SENSOR 1 in the DATA LIST w i t h the
HDS.
Does ECT SENSOR 1 change 18 °F (10 °C) or
more?
Y E S — I n t e r m i t t e n t failure, system is OK at this t i m e .
Check for poor connections or loose terminals at
ECT sensor 1 and the P C M . B
N O — G o t o step 11.
6. Note the value of ECT SENSOR 1 in the DATA LIST
w i t h the HDS.
7. Turn the ignition switch OFF.
8. Open the hood, and let the engine cool for 3 hours.
9. Turn the ignition switch ON (II).
10. Check ECT SENSOR 1 in the DATA LIST w i t h the
HDS.
Does ECT SENSOR 1 change 18 °F (10 °C) or
more?
Y E S — I n t e r m i t t e n t failure, system is OK at this time.
Check for poor connections or loose terminals at
ECT sensor 1 and the PCM.B
N O — G o t o step 11.
11. Turn the ignition switch OFF.
12. Replace ECT sensor 1 (see page 11-215).
13. Turn the ignition switch ON (II).
14. Reset the PCM w i t h the HDS.
15. Do the PCM idle learn procedure (see page 11-340).
16. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Are any Temporary DTCs or DTCs indicated?
Y E S — I f DTC P0116 is indicated, check for poor
connections or loose t e r m i n a l s at ETC sensor 1 and
the PCM, then go to step 1. If any other T e m p o r a r y
DTSs or DTCs are indicated, go to the indicated
D T C s t r o u b l e s h o o t i n g .
NO—Troubleshooting is complete. B
11-86