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This might be a little of a noob question but any support will be appreciated! a few weeks back my car started dropping in the fuel economy and within city traffic at times it used to get stuck on higher gears for some reason so it felt like it was on LIMP mode as i could not get past 35KMH even with the foot fully down. So i went to A*W to get it checked by them. They tried an OBD scan several times and failed to diagnose it for some reason as none of the OBD scanners they had could read the ECU. they did some manual testing like racing the engine and the typical garage bass diagnostic and told me that there is some lock in the ECU and only toyota company will be able to read the ECU with their OBD equipment and that standard OBD2 scanners garages have dont work. I have a Toyota DBA-KGC30 with the 1NR-FE engine (M600 Second Gen) with ISO CAN 11bit ID ECU 2 protocol. They told me Allion, Axio, Vitz and all have an older ECU model and so they have done scans in them. Apparently as toyota has used a more complicated ECU for post 2013 Cars. Can anyone tell me if the whole A*W story is complete BS so that they could get away with their inefficiency or is it worth for me to try buying an ELM327 off Alie*press to diagnose the problem by myself at home? Toyota charges a hefty bill since they take 25K just to service the KDH201, so im sure i can buy 10 scanners off Ebay and give them away rather spending an hour there with a big bill to get a report on my hatch. Any expert advise on what i could do is appreciated. Also if you know what may cause such a LIMP mode in a toyota?
My pastime these days, is trying various affordable car scanning tools. The keyword here is ‘affordable’ for the average car enthusiast. I’m trying these out mostly in my Ford Focus and whatever car that I can get hold of Based on my experience I thought of writing down a set of DIYs. Comments and corrections are highly appreciated (especially on how to diagnose faults using these, as I am still on a learning curve). Here’s the first one: Scanning a car using a Bluetooth scanner and an Android Device (using Scanator software) Intended Audience for this DIY: Noobs What you need: A Bluetooth-supported OBD scanner (read steps 1 to 4 on how to get one) An Android Smartphone/Tablet (I will be using my Galaxy Tab) A car that supports your device (if the YOM of your car is pre-2000, most likely you will not be able to use any of the cheap tools on ebay) Total Damage: If you already own an android device, you should be able to get the scanning equipment for Rs. 2500 – 3500 Step 1: The first step is to find out the interface type and the protocol that is supported by your car’s ECU. Uncle Google will be helpful for this. You can also check the car manuals but most of us don't possess them anyway. While there is plenty of information for European cars on Google, you may need to search a bit harder for JDM cars. I typed “Ford Focus OBD2 Protocol” on Google and this is where I landed: As you can see, the Focus runs a CAN-Bus, which is also known as ISO15765-4. Just did a search for Fiat Grande Punto and I discovered it runs the same protocol. So I typed “Toyota Axio OBD2 protocol”. Well… all I got was a lot of gibberish like this one http://www.mycarforum.com/index.php?showtopic=2640512 I am not going to waste time to read that and figure out! In short, find out the connector type and the protocol before you embark on this. The protocol may be something like: ISO15765-4 (CAN), ISO14230-4 (KWP2000), ISO9141-2, J1850 VPW, J1850 PWM etc. Step 2- Finding a suitable OBD-2 reader for your car on eBay: Go to eBay.com to find a suitable reader. I searched for a Bluetooth ELM327 OBDII reader for the Focus. If you are a brave soul, you can also try aliexpress.com And I selected something like this (not the exact same item. Just an example) Because it supports CAN-BUS TIP: Ignore the list of supported vehicles on the seller’s page. It’s just not comprehensive. Go by the protocols instead. Step 3 – The World Wide Wait: Within 2-3 weeks time, you should receive the package. Customs won’t be too bothered because it will look like a computer peripheral for them. If by a remote chance you get summoned to customs, just say its a device for computer jilmaart. Step 4 – Getting Scanator: TIP: Throw away the CD that comes with the scanner. Go to Google Play Store with your Android Device and search for Scanator You can also download other software like Torque Lite. There was also a Ford-specific software which I simply ignored, because I got a better one on my laptop. Step 5 – Let’s do it!: Connecting the device to the car: Find out where the OBD connector is. It may be in the engine bay or in the fuse box in some cars. In a few other cars (like the Grande Punto), it may be hidden by a plastic panel. As always, uncle Google will help you to find it. In case of the Focus, it’s just at 4 O’Clock from the steering wheel. Apparently this is where Toyota Corolla has it: http://codes.rennacs.com/photo-gallery/TOYOTA-EFI-21-Photos.php TIP: When you plugin the device, a red indicator should light up. If the device is faulty, you will probably not see any lights or get some nonsensical outputs. Until the device is confirmed to be working, do not leave feedback on eBay TO BE CONTINUED (I had to break the DIY to multiple posts because of image posting limitations)...