Any Automatic Transmission Diagnostic Info Available?

[ford_galaxy]

1995 Galaxy. 2l DHOC. Box stuck in 'limp-home/emergency mode' (3rd gear only).

 

Can anyone give me any pointers to where I can get Automatic Transmission Diagnostic Info? Something like a fault-finding tree maybe? Or info about the sensors and what they should be doing? Or at least, what causes the box to go into limp-home mode, is it faulty MAF sensor?

 

I tried searching the forum for info but nothing seems to be about auto transmission diagnostics.

 

Thanks.

 

Marc

[frogeye]

1995 Galaxy. 2l DHOC. Box stuck in 'limp-home/emergency mode' (3rd gear only).

 

Can anyone give me any pointers to where I can get Automatic Transmission Diagnostic Info? Something like a fault-finding tree maybe? Or info about the sensors and what they should be doing? Or at least, what causes the box to go into limp-home mode, is it faulty MAF sensor?

 

I tried searching the forum for info but nothing seems to be about auto transmission diagnostics.

 

Thanks.

 

Marc

 

Hi Marc,

 

There may well be nothing wrong with your transmission, the limp mode can occur for a number of reasons. On my 2.3 petrol a relay 30 fault caused the limp mode to occur, have you got an engine warning light on? (I'm not sure you would even have a warning light on a 95 model) A scan with vagcom should hopefully provide a few pointers (cable and software (freecopy) about

[ford_galaxy]

I have a hunch there is nothing wrong with the transmission.

 

I would like to know why it's on Limp Mode and how to find this out.

 

There are no warning lights showing for the transmission.

 

However there's other light, an ABS light flashes for a fraction of a second regularly every couple seconds. And there's a red brake warning light on all the time. I wouldn't of thought these have anything to do with transmission fault. Is it?

 

I'm afraid I'm clueless without technical information to tell me how it all works. And I wouldn't know what sensor signal to start measuring, or even what signal I expect to see.

 

Before I wrote here I did try to find a manual to download but all I seemed to of got was webpages appearing to offer exactly what I searching for but all they lead to are adverts for "download privacy" software that you have to give credit card number. Other links to supposed "workshop manual" didn't do anything but download malware. And there was a supposed real workshop manual after looking at 100 links, but that was no good either. The link to ask questions before buying it online, I tried asking if it contains the diagnostic info I need were ignored and then a irrelavent answer given.

 

All I think I need is some pointers where I can get some info how to diagnose the cause of 'limp-home mode', if anyone knows of such I'll be grateful.

 

PS is the 95 model an OBD1 interface? I have an OBD1 scanner

Edited May 18, 2010 by ford_galaxy

[big_kev]

The gearbox going into limp mode can be caused by many things.

 

The commonost is failure of the gearbox ECU.....or the ECU receiving implausible signals from other components.

 

 

 

I would recommend using VagCom ( or similar diagnostic software/hardware ) to interogate the vehicle.........NOTE ......you have a Ford Engine and VagCom will not speak to this.

 

Have a browse on Ebay .....there is lots of stuff on there....Diagnostics software hardware.

Also plenty of copies of the Ford TIS manuals ( all illegal.....though I think most people on here have one )

 

The RED warning brake light means that there is a potentially critical failure of the braking system and the vehicle may be unsafe to drive !

 

The ABS light may just be a dodgy sensor or it may be picking up a problem with the braking system......best to ignore this for now as it does not affect the safe operation of the vehicle.

Edited May 18, 2010 by big_kev

[ford_galaxy]

The RED warning brake light...

 

Probably low brake fluid. I'll look at it when I get access to the real world outside of this TCP/IP connection.

 

 

Funny thing warning lights in my opinion, you can go to a motorbike shop and buy a machine easily capable of going 180 mph into a concrete wall just down the road, and when you collect this 180+ mph bike, the shop ensures they make a point of telling you things like "never move off with the side-stand down and there's a warning light here to remind you".

[ford_galaxy]

, the limp mode can occur for a number of reasons. On my 2.3 petrol a relay 30 fault caused the limp mode to occur,

 

Update...., I searched for a "Relay 30" on mine, but couldn't find a relay 30 fitted, I thought for a while that must be the problem ... until the owners book says there isn't one!

 

.........NOTE ......you have a Ford Engine and VagCom will not speak to this.

 

Because I have the ford engine, does that mean it's not a good idea me paying out for a vagcom because it won't read the car?

 

I suspect after using the right reader (whatever that is) I'll then get a long list of codes that are expensive to go through to mend each one separately, then after doing all that, the auto box still has the same problem (I think that's what the PO got last year with the dealer).

 

I think all I need is where I will get diagnostic information such as fault-finding tree and troubleshooting charts. Pin-lists of the ECU and sensors and what the signals should be. Does a ford TIS manual have this? I just want to diagnose cause of limp home mode. I tried asking online vendors of 'workshop manuals' but they either ignore me or respond with irrelalvent answer, so I'm not keen on wasting money buying something that's going to be no good.

 

Is there anywhere where I can download this info from the public domain?

Edited May 19, 2010 by ford_galaxy

[ford_galaxy]

The Diagnostic Interface of the Ford Galaxy 1995 2.0i DHOC

 

Is it OBD2 or OBD ?

[ford_galaxy]

Notes to self, as no one seems to be paying any attention to these posts :-)

 

auto box sensor locations: http://www.fordgalaxy.org.uk/ford/index.ph...amp;#entry84002

 

 

"Relay 30" as popularly known in these quarters is identified by Ford as R27. The relay is on all the time and runs hot, and as such it's MTBF is reduced a lot. To increase its MTBF it ought to be operated cooler, somehow, maybe add a ballast in series the coil or a heatsink, or maybe just replace the relay with a better one, rather than keep trying to 'restore the car back to its condition as it was designed' yes, its proof that "ford is designed to last" ok, last for a few years then conk out.

[frogeye]

Notes to self, as no one seems to be paying any attention to these posts :-)

 

auto box sensor locations: http://www.fordgalaxy.org.uk/ford/index.ph...amp;#entry84002

 

 

"Relay 30" as popularly known in these quarters is identified by Ford as R27. The relay is on all the time and runs hot, and as such it's MTBF is reduced a lot. To increase its MTBF it ought to be operated cooler, somehow, maybe add a ballast in series the coil or a heatsink, or maybe just replace the relay with a better one, rather than keep trying to 'restore the car back to its condition as it was designed' yes, its proof that "ford is designed to last" ok, last for a few years then conk out.

 

Hi,

 

Inspite of my 2.3 ford engine, I still gain a lot of info from vagcom about autobox, instruments, etc. I can't recall ever trying to connect to my '95 2.0l Aspen, but certainly my '99 and '03 2.3's communicate well enough to provide me with most fault codes to be useful. Have you checked if you have a purple 16pin (?) connector under the ashtray housing.... I'd attach a picture but can't find one... I would guess it would be odb-2 but current '95 plate owners could surely confirm this for you.

 

As for the relay 30, have you dug in behind your fuse panel and thoroughly checked for one, I wouldn't pay too much attention to the owners manual. There is an excellent FAQ on here for the relay 30 replacement Click hereRelay 30 .. this is nothing more than my own experience with limp home problems (with both my 2.3 gals relay 30 caused this). I'm not too sure though, that you may need to clear the fault codes before it will cancel 'limp mode' - can't remember but I'm sure that others can.

 

Goodluck,

 

Frogeye

[ford_galaxy]

There doesn't seem to be any significant noise on the 12V switched supply (presumably downstream of the relay marked "30")

 

I've plugged an ELM327 USB scantool in the OBD2 diag socket under the ashtray. There is 0 DTC's reported. The scantool reads realtime engine data OK. No transmission information is reported, maybe I don't have the right software 'scantool_net113win'

 

So back to where I started.

 

Is there any diagnostic info around for the Transmission? Something like fault-finding tree or diagnostic chart? Where is this information located? I'm afraid I'm a complete dunce without this information.

[frogeye]

There doesn't seem to be any significant noise on the 12V switched supply (presumably downstream of the relay marked "30")

 

I've plugged an ELM327 USB scantool in the OBD2 diag socket under the ashtray. There is 0 DTC's reported. The scantool reads realtime engine data OK. No transmission information is reported, maybe I don't have the right software 'scantool_net113win'

 

So back to where I started.

 

Is there any diagnostic info around for the Transmission? Something like fault-finding tree or diagnostic chart? Where is this information located? I'm afraid I'm a complete dunce without this information.

 

Hi,

Have you tried your cable with the vag.com software? You can download a useful free trial version from the www.ross-tech.com website - I've got a feeling that it does work.

 

Frogeye

[ford_galaxy]

VAG-COM software doesn't see the virtual COM port that the USB driver creates. The software that came with it does. scantoolnet113

 

What I really need is diagnostic information, something like a fault-finding tree, or diagnostic chart, something that lists the sensors, the pin assignments and what signals should be present. Is this information available in the public domain anywhere?

[Steve_Mk1_2.3A]

VAG-COM software doesn't see the virtual COM port that the USB driver creates. The software that came with it does. scantoolnet113

 

What I really need is diagnostic information, something like a fault-finding tree, or diagnostic chart, something that lists the sensors, the pin assignments and what signals should be present. Is this information available in the public domain anywhere?

 

I have a trans guide (attached) for a 96M which is similar - *but* may lead you down the wrong path - however it does have VAG COM charts that might help.

 

Regards,

 

Steve

096 Transm.pdf

[stanwood]

are you sure its in limp mode.my 1.9d cuts power after a sharp right hand corner.its caused by a build up of air in fuel system,the bubble of air moves in to the feed pipe and the computor picks this up as a fault.after stopping and restarting it resets itself.the old austin fx4 taxi did the same on left hand sharp bends but you had to spend half an hour bleeding system,if you were not quick enough to rev its socks off in neutral!