Honda ACCORD HYBRID 2005 Service Manual page 328

PGM-FI System
DTC Troubleshooting (cont'd)
DTC P0118: ECT Sensor 1 Circuit High
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 - 40 °F (-40 °C) or less, or 4.90 V or
more 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. Connect ECT sensor 1 2P connector terminals No. 1
and No. 2 w i t h a j u m p e r w i r e .
E C T S E N S O R 1 2P C O N N E C T O R
ECT1 (RED/WHT)
1 2
S G 2 ( G R N / Y E L )
J U M P E R WIRE
W i r e side of female t e r m i n a l s
6. Turn the ignition switch ON (II).
7. Check ECT SENSOR 1 in the DATA LIST w i t h the
HDS.
Is about - 40 °F (-40 °C) or less, or 4.90 V or
more indicated?
Y E S — G o to step 8.
NO—Go to step 18.
8. Turn the ignition switch OFF.
9. Remove the j u m p e r w i r e f r o m ECT sensor 1 2P
connector.
10. Turn the ignition switch ON (II).
11. Measure voltage 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 f e m a l e t e r m i n a l s
Is there about 5 V?
Y E S — G o t o step 12.
N O — G o t o step 17.
12. Turn the ignition switch OFF.
13. J u m p the SCS line w i t h the HDS.
14. Disconnect PCM connector C (22P).
15. Connect ECT sensor 1 2P connector terminal No. 2
to body ground w i t h a j u m p e r w i r e .
E C T S E N S O R 1 2P C O N N E C T O R
S G 2 ( G R N / Y E L )
J U M P E R WIRE
W i r e side of f e m a l e t e r m i n a l s
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