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ELM327 Interface Not Connecting to ECU?
Posted 05 February 2012 - 04:38 PM
I have just bought a Bluetooth version and although everything else seems to work correctly, it won't connect to my ECU.
I've tried all the software I can find (ScanmasterELM v184.108.40.2061, wOBD v1.5.1 Beta, OBD2Spy v2.05 and v4.10, Scantool.net v1.13) but they all give a variation on the "no connection to ECU" error. I've tried manually selecting each of the different protocols one at a time, but no difference.
I've tried with the ignition in II and with the engine running, connecting to the device before/after moving the ignition to II or starting the engine but nothing seems to help.
The car is a 2004 2.0TDCI Ghia BTW.
Any suggestions? Could it be that my car doesn't have EOBD? How would I tell?
Posted 05 February 2012 - 05:32 PM
no problems connevting other than when connected in the wrong order or my pc decides to change the com port assigned to the unit.
Mines a usb v1.3 if memory serves though, and i now use a software called Engine Check as the freebie stuff that came with the cable were not that cracking for live data readings etc.
Posted 05 February 2012 - 05:35 PM
Posted 05 February 2012 - 07:44 PM
I don't think I need any drivers, as the device connects via a Bluetooth virtual COM port. The software talks to it as though it were any normal serial device on an RS232 port. The device lights one red LED as soon as it's connected to the car (whatever the ignition position), then the other LEDs light in sequence. This happens again when it gets reset by the software. When the software is talking to it, I can see the yellow LED flashing, so I'm pretty sure that they are communicating OK. It seem to be that the ECU just doesn't "answer" when called to do so.
Is it possible to connect the device upside-down? I have the LEDs on the top, with the narrow part of the connector that has the "bump" at the top also. Some I see on the web are the other way around, with the narrow part of the connector at the bottom (opposite face to the LEDS)??
compuwiz_uk: What do you mean by "connected in the wrong order"?
Posted 05 February 2012 - 08:43 PM
Whereas I see some others are like this (narrow part of connector & "bump" furthest from LEDs):
Posted 05 February 2012 - 09:21 PM
Posted 05 February 2012 - 10:33 PM
Got mine from Amazon: http://www.amazon.co...duct/B005ILJ34U
Interestingly, I now notice that the picture accompanying the listing shows the second orientation of connector (as you have), NOT the orientation I actually have.
Posted 06 February 2012 - 06:52 AM
54 Mondeo ST220 - Weekend / track use - Car Diary
09 Audi TTS - 2.0 TFSi 272bhp, Quattro, DSG, Mag Ride + Launch control!
12 Focus Zetec 1.6 TDCi - 50mpg and slow
59 Seat Ibiza 1.4 "Sport" - At least its a petrol! - Sold 60 Mini Cooper D - 60mpg and handles like a go kart - Spent 80+ days at the dealer getting repaired so went back after 11 months 06 Titanium X 2.2 TDCi - 40mpg but not quick enough - Sold 57 Titanium X 2.5 Turbo - 20mpg but a proper sleeper - Sold
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