Yep, that adapter will work. I still need time to finish the software/app and run more tests to ensure it's stable. Once I'm done though, I'll get a copy of it to you and explain how to install it on an Android device.
I still have a lot to do but I'll break it down and post updates over the next few weeks. The solution is very difficult to explain in short terms. Basically, I have to send a request to the ECU to initialize it and immediately send another request for the data.
Okay, from what I gathered, the reason many OBDII devices/readers don't work on Honda's is due to the initialization sequence, timing, and order in which commands are sent to the ECU. But first, the side-x-side must be in diagnostics mode by shorting two wires on the DLC. Then, the ECU is ready to query.
Do you have a p500, p700, or p1000? If you have the p1000, the app will work the way it is. However, I'm still getting it to work with the p500 and p700 models because they are wired completely different than the p1000.
I have a Honda Pioneer 1000.
Crap, I think you need the 6 pin adapter for the 1000. You'll find the DLC connection in the front storage area. Look to the right, by the steering linkage and it should be a red coupler plugged into a plastic termination receptacle. Atleast that's where mine is. Give me your email and I'll send you the app. There's a few necessary steps it'll take to install it because Android doesn't allow 3rd party installs by default. Don't worry about security, I created this app personally and there's nothing in it that would jeopardize your info or your phone in any way. I'll include detailed instructions in the email as well.
I started a conversation with you, and it has my email address.
All set! I sent you an email with the APK and instructions. 🤘
With a 4-pin, you have to put the vehicle is "diagnostics mode" to communicate with the ECU. This is done by jumping the brown/red with the green wires on the DLC. I just use a paper clip to jump the circuit in the adapter. In doing do however, the ECU will also enable all the restrictions to the operating mode, similar to when it doesn't detect a seatbelt. So, you really can't use real-time data while on the trail, which sucks! In contrast, the 6-pin also uses the L-line, which is specifically for getting real-time data during normal operation. I'm currently trying to figure out a way around this limitation because I own a Pioneer 700 with the 4-pin.
Thank you for sending me adapters! Regarding the 4-6 pin DLC adapter, it took some time to file down on the white male end to get it to fit. I confirmed the continuity and pin assignment on all three pins. Unfortunately, it didn't solve my problem like I had hoped. However, I think I discovered something during this process. On the OBDII to 6 pin adapter, it's possible to trigger diagnostics mode by connecting pin "C," which is the SCS Service line (pin 9 on the 16 pin side), to a ground. Therefore, theoretically, I should be able to install a simple toggle switch on the dashboard and leave the OBDII connected all the time. When I want to see real-time data, I can toggle the mode and use my app without leaving the drivers seat. Obviously, this is just a work around because it still doesn't allow me to view real-time data while driving. ... But it's a move in the right direction.
that procedure is very similar to working on industrial equipment to "talk" and or manipulate the service mode so to speak
I found that too. I tried following the instructions using a raspberry pi 4 but I just get a blank screen when I run it. I think I installed all the dependencies it required and set the Bluetooth to serial correctly. But, I must have missed something.
Thanks Mark!
