New answers tagged

0

The CEL only comes on when a specific trouble code has been stored, that's it's purpose.


3

Start off with a copy of the service manual for your car. The electrical schematics will help you understand where the various annunciators come from. Earlier cars typically have less data available via ODB II (whose original intent was to provide a way to monitor pollution controls). If you add something like a Raspberry Pi to your project you can use the ...


0

The VW diesel engine controls that I'm familiar with (ALH and BEW mostly) are drive-by-wire and the throttle position will be at 0% at idle. You may have a different controller, but I wouldn't expect the throttle position to be much different. The ECU is responsible for managing the idle speed and doesn't need throttle input to do that, hence the 0% (driver ...


0

I've never really checked but it wouldn't be anything you could do from generic obd2 you would need a scan tool that could talk to either the cluster computer or whatever other computer. Check your service manual booklet it should tell you what needs to be checked/replaced based on mileage.


2

As long as we are talking about US spec "Asian" vehicles, my personal preference is one of the many "Autel" brand scan tools, which for me have always been able to link up and give good results. I have a 1997 Subaru which the Autel works well on. Keep in mind this vehicle uses a rare protocol, and is only one year past the 1996 US cutoff which mandated OBD ...


0

The ELM-327 supports exclusively Engine Control Units. It cannot communicate with anything else on the CANBus. I think this is intentional by the manufacturers to ensure that the $10,000 diagnostic computers stay $10,000 :)


-1

Here's my attempt on deciphering Yamaha's protocol http://www.iwasz.pl/electronics/motorcycle-black-box-part-1-data-acquisition-with-arduino-mega/. It's a serial link over one, bidirectional line. Another good place too check out is the http://ecuhacking.activeboard.com/


0

I am writing an OBDII app for Android and my extensive testing has showed that Yes it can have a negative impact on the cars performance. I have had test outcomes where all the lights on the dash light up and the engines torque is reduced. I believe this could be related to overloading of the OBD circuitry with constant commands being issued from an app. I'm ...


2

So I think the easiest thing to do would be to get a 9 volt battery connector like this: and some alligator clips with wires: and just plug in the battery, connect the clips to the 9v connector wires and to the ends of the car's battery connectors then disconnect the the car battery and install the new one. You could probably get it all for a few ...


2

Depends on what you would like to do with it. If you just want to clear some generic codes and the check engine light, then most generic OBD2 cables should work with appropriate software. If you want to do more advanced things, like reading Volvo specific codes or changing available parameters then what you need is VIDA + DiCE. It's a Volvo diagnostics tool ...


1

From what I can tell, the 05 uses CAN protocal, not OBD2, and then there are some issues with using a generic tool, and most accepted, if not only official method, is to use a volvo-specific (proprietary) scan tool to read the codes. Look over the link below and it appears that there has been some headway made in adapting a 'generic' scan tool to work, but ...


1

It looks like the only option other than an aftermarket system would be to goto a Toyota dealer or a independent shop with the Toyota TechStream Software and to enable this feature. It looks like this option should be on by default but was never setup or was disabled for some reason. Edit: It looks you may be able to do this from the Multi-Display. SET ...



Top 50 recent answers are included