"Thorsten Ostermann" <News@Ostermann-net.de> wrote in message
news:3hpth4Fi3d4pU1@news.dfncis.de...
> [X'post to rec.autos.makers.honda and alt.autos.honda]
>
> Hi!
>
> Has anyone experience with reading sensor values (e.g. lambda, speed,
> temperature) from the ECU via the diagnosis interface? For cars
> manufactured in 2000 and later, this interface is a standard called OBD-2.
> But what about older Honda cars? Many VWs are OBD-2 compliant, even if
> manufactured before 2000. Is it the same for Honda?
>
> Recording to
> http://www.hondata.com/techecuid.html
> the ECU units build in 1996 and later are called "OBD2", so they may
> behave similar to the standard, even if the connetor is different. But
> what about older ECUs (called "OBD1")?
>
> I'm especially interested in doing this diagnosis for Honda Civic and del
> sol (EG and EH types, 1992-1998). But any links or infos are appreciated!
>
> Kind regards
> Thorsten

In the US, all cars sold new after January 1, 1996 were required to be OBD
II compliant, and the connectors are all OBD II connectors. More recently a
second standard, CAN, has come out for communicating with other controllers
in the car but OBD II is still there. An OBD II reader connected to the
access connector near the driver's knees will still yield all the mandatory
emissions info. As to analog values like sensor numbers, I don't know. Those
definitely are not available on the pre-OBD II cars and I have doubts about
the '96-'98 cars, too.

For the pre-'96 Hondas, check out
http://www.iequus.com/assets/manuals..._E_14JAN03.pdf
for instructions. Note that anywhere they talk about a "reader" it is a
simple jumper that shorts the two connector pins. (I should know - I bought
the $35 kit that consisted of the manual, two different shaped jumpers -the
other is for Toyotas - and a plastic screwdriver for Nissans.) In each case,
the procedure only reports stored codes and the manual provides instructions
for clearing them.

Mike