I looked through the manual before posting, the manual only says that if fuel cap is not replaced or if it is not properly replaced, the fuel cap warning light will be lit and in due course of time will also trigger the CEL, and that once the problem is corrected, the CEL should go out after a period of normal driving.
It also says in bold that it may take the system a LONG time to detect a missing or mis-applied cap.
[My Thought] The fuel cap warning light should come on sooner than CEL, so that the vehicle operator could correct the problem before it triggers CEL.
On gross inspection, I do not see any electrical connection to the cap or the fuel inlet where a sensor could have been.
Matt
===========================================================
'> BUT, it does not turn on if the fuel cap is NOT capped back on the fuel '> inlet. '>
'> During the last week twice I forgot to cap the fuel inlet after fueling, '> there '> was no warning light on the dash, I discovered my mistake after reaching '> the '> destination, about 50 miles of highway driving.. '>
'> Where is the sensor for this light and where should I start looking to '> return it '> to normal function ? '>
'> Thanks in advance. '>
'> Matt '