Does Honda use OBD?

[Jgarciajr40_imp]

First check engine light this morning on my way to work; gave the bike a quick look but didn’t have time to get into it.

Cylinders are firing and have oil so certain I won’t blow anything up, but does Honda use an OBD or OBD equivalent and where can I find it on the bike?

2017 ex cb1100 CAH

 

[Lord Popgun]

As yet I believe the answer is no. Others will chime in I'm sure. I think it will be mandated and a Google search says Honda is going to be going to OBD.

Usually the manual says to connect the HDS ( Honda diagnostic system). It is EXPENSIVE and only available to dealers so says my dealer. I have one made by Healtech that jacks into the diagnostic port and a PC running the Healtech software. It works great.

Don't know about the '17, but on earlier bikes the diagnostic connector is under the left side panel.

You can have the light flash the codes. I don't remember how. It is one of those put the kickstand down. Turn around 3 times then hit the kill switch and say "Cormanus commands you" and the codes will flash in a sequence that shows the code.

Actually it is easy to put in the flash mode but I will have to look up how unless someone else posts it up. I think it only flashes the major code, not the subcode. The reader will get that.

OK, here is how to do it --- How To check for fault codes

If you do that, I suggest you video it with your phone to post here if needed as sometimes it is a tad hard to tell the first digit, then the separator flash or wait, then the second digit flashes.

 

[GoldOxide_imp]

Possibly a Forum member indicated there is an OBD interface on 2017 and onward models.

If so, it would be consistent with other Honda models having it starting around the same model year.

 

[1973cb750]

hela tech makes a scanner to read them if you dont wana read flashes

 

[Lord Popgun]

hela tech makes a scanner to read them if you dont wana read flashes

Healtech
HealTech Electronics - Smart Tech for your Ride!

 

[1973cb750]

dang keyboard on my pc is glitchy been making alot of mistakes

 

[Lord Popgun]

 

[Jgarciajr40_imp]

Like in that video:

Can I just short the terminal with a paperclip? I recall doing in on old Honda civics. I don’t have access to whatever he had looked like a paperclip with a capacitor attach at the top lmao

 

[Lord Popgun]

For some reason, in the video, he is using a resistor. The service manual does not call for that. The service manual calls for using the SCS service connector to short Brown and Green together. Says it just like that. Don’t have the SCS connector? use a wire, or a paper clip or whatever.

The SCS service connector is just a connector with a wire loop connected to the pins for Brown and green.

Like PD said, make sure its brown to green.

 

[Jgarciajr40_imp]

For some reason, in the video, he is using a resistor. The service manual does not call for that. The service manual calls for using the SCS service connector to short Brown and Green together. Says it just like that. Don’t have the SCS connector? use a wire, or a paper clip or whatever.

The SCS service connector is just a connector with a wire loop connected to the pins for Brown and green.

Like PD said, make sure its brown to green.

Guess I could never join the military even if I wanted. That’s brown, right? Lmao that orange/white combo wire looks close to brown.

So basically just touch the two metal contacts together.

96-FD9-CAD-A251-44-B4-9-E6-E-EB1-FDE1578-BD hosted at ImgBB
6-C8-C9-A04-04-F3-4045-AF37-5024863-F0-FEF hosted at ImgBB

 

[Lord Popgun]

Jeez Jgar you are making this way too hard.

The wires in the connector are green, brown, orange with white stripe and black with white stripe.

In this picture, 96-FD9-CAD-A251-44-B4-9-E6-E-EB1-FDE1578-BD hosted at ImgBB , the top wires are green and brown.

shorting the pins means connecting them together. Use a wire, or a paper clip, or whatever you have.

If that is too hard I can give you the part number for the SCS connector and you can order one and just plug it in.

 

[Jgarciajr40_imp]

Thx for the help guys.

Code magically disappeared on start up. Drove it around the block a few times never kicked on.

Wonder if it was some bad gas, or maybe the weather? Ambient temperature has been in the 100-110 degrees recently. Oil lever is fine and amber. Hmm. Wonder what it was

Jeez Jgar you are making this way too hard.

The wires in the connector are green, brown, orange with white stripe and black with white stripe.

In this picture, 96-FD9-CAD-A251-44-B4-9-E6-E-EB1-FDE1578-BD hosted at ImgBB , the top wires are green and brown.

shorting the pins means connecting them together. Use a wire, or a paper clip, or whatever you have.

If that is too hard I can give you the part number for the SCS connector and you can order one and just plug it in.

Was trying to confirm that wire was orange and not a faded brown, or vice versa. But thx

 

[Lord Popgun]

Jgar,

Glad to see the fault cleared!!

However, you can still read out any codes that are stored. The book calls that “freeze DTC”. The MIL doesn’t flash with stored codes.

To read them the book says to turn off the ignition switch and short the pins in the DLC connector. Turn on the ignition and stop switch (kill switch) to run and note the MIL blinks.

If you do the test you may be able to find out what tripped the fault.

There is also a procedure for clearing stored faults.

 

[Charlie Bravo_imp]

Could that Honda connector be a resistor of a certain ohms?

 

[Lord Popgun]

CB, no. It is just a shorting plug. And, I just now dug it out and metered it. Dead short, zero ohms.

Looking at a wiring diagram, the brown wire goes directly to the ECU. The pin it goes to is labeled SCS.

So, put a ground on that input and the ECU will do the flash codes if the setup is followed. Just a logic level. I imagine there is a pull-up resistor in the ECU that holds the line high when not grounded. That kind of thing is common in digital circuits. I’ll have to look at that someday when I have the side cover off.

 

[bflint]

i bought the healtech honda model about a year ago, connects to my laptop,

 

[max]

Thanks all for posting this thread, just a clarification why i used a 1500 ohm resistor, 3 reasons;

1 it is safe to use and will not damage anything if the wrong pins are connected together.
2 it fits very well in the contacts of the connector without spreading them open.
3 It's shape makes it easy to remove and insert into the connector within the time limit of the operation.

And i had a good supply of these resistors, the same effect has always delivered by the using a wire link, some use a switch in a purpose made connector so there can not be a mistake made with the different wires and make removing the link in the process simple, just a matter of choice, it all works if done correctly.

As usual Popgun is correct, the ecu has a "pullup" resistor on one of the cpu pins which if pulled low under certain conditions ( this procedure ) triggers the cel indicator to read out the stored code ( s ).

As i understand it if the cel indicator is on solid it indicates a current fault condition, if it blinks continuously it means a major fault is present and if there is no indication the faults have cleared but are stored in ecu memory for diagnostic purposes so they can be read by the service tech and give him some direction if he is servicing the bike.