OBD1 & OBD2 Honda/Acura vehicles both use the same CEL checking procedure.
With a flashlight, you'll have to get
yourself situated under the passenger side
of your dash board and look to the right
of the glove box. You should see a green colored
stuffed up under there [Fig.1]
. Pull this block down. You should see two plugs
residing inside of the block.
Pull out the smaller of the two plugs (either
a light grey or blue colored 2 wire plug) -
this is the diagnostic plug [Fig.2]
. Now, you can either make your own plug to "jump" the diagnostic connector[Fig.3-4]
or you can use a paper clip to arc the diagnostic
, so that
your CEL light will begin to blink.
|Fig.5 p/p clip image
I've always found that it's easiest to have
the vehicle running while the CEL
is ON before
"jump" the diagnostic plug. Once the diagnostic
plug is "jumped", take a look at your gauge
and your CEL light should begin to blink [Fig.7]
Once you get the CEL light to blink, here's
the how the light is read:
long blink(s) = an incriment
blink(s) = incriments of 1
short pause = continuation of same code
long pause = a break between codeis (if more than one CEL code being thrown)
Below is a video clip showing a sample of how to read a few CEL codes. The clip shows codes 22
(vtec solenoid), 41
(02 heater), and 19
(lock solenoid) being thrown, then repeats. You may want to watch the video a couple times to familiarize yourself with how the CEL light flashes numeric patterns, pauses, then flashes numeric patterns again.
It may take you a few minutes to figure out what CEL code(s) and patterns are being thrown by your ecu.
Special thanks to Jameson Malpezzi
for this video clip.