Honda ACCORD HYBRID 2005 Service Manual page 327

DTC P0117: ECT Sensor 1 Circuit Low Voltage
1. Turn the ignition switch ON (II).
2. Check ECT SENSOR 1 in the DATA LIST w i t h the
HDS.
Is about 356 °F (180 °C) or higher, or 0.08 V or
less indicated?
Y E S — G o to step 3.
NO—Intermittent failure, system is OK at this t i m e .
Check for poor connections or loose terminals at
ECT sensor 1 and the PCM. •
3. Turn the ignition switch OFF.
4. Disconnect ECT sensor 1 2P connector.
5. Turn the ignition switch ON (II).
6. Check ECT SENSOR 1 in the DATA LIST w i t h the
HDS.
Is about 356 °F (180 °C) or higher, or 0.08 V or
less indicated?
Y E S — G o t o step 7.
NO—Go to step 11.
7. Turn the ignition switch OFF.
8. J u m p the SCS line w i t h the HDS.
9. Disconnect PCM connector A (31P).
10. Check for continuity between ECT sensor 1 2P
connector terminal No. 1 and body g r o u n d .
E C T S E N S O R 1 2P C O N N E C T O R
ECT1 (RED/WHT)
W i r e side of female t e r m i n a l s
Is there continuity?
Y E S — R e p a i r short in the w i r e between ECT
sensor 1 and the PCM (A14), then go to step 13.
N O — G o t o step 18.
11. Turn the ignition switch OFF.
12. Replace ECT sensor 1 (see page 11-215).
13. Reconnect all connectors.
14. Turn the ignition switch ON (II).
15. Reset the PCM w i t h the HDS.
16. Do the PCM idle learn procedure (see page 11-340).
17. Check for Temporary DTCs or DTCs w i t h the HDS.
Are any Temporary DTCs or DTCs indicated?
Y E S — I f DTC P0117 is indicated, check for poor
connections or loose terminals at ECT sensor 1 and
the PCM, then go to step 1. If any other T e m p o r a r y
DTCs 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 c o m p l e t e . •
18. Update the PCM if it does not have the latest
software, or substitute a k n o w n - g o o d PCM
(see page 11-6).
19. 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 P0117 is indicated, check for poor
connections or loose terminals at ECT sensor 1 and
the PCM, then go to step 1. If any other T e m p o r a r y
DTCs or DTCs are indicated, go to the indicated
D T C s troubleshooting.
NO—If the PCM was updated, t r o u b l e s h o o t i n g is
complete. If the PCM w a s substituted, replace the
original PCM (see page 1 1 - 2 1 9 ) . •
11-87