OBD2 Diagnostics on an HZJ105 100 series

Submitted: Friday, Aug 21, 2009 at 21:39
ThreadID: 71693 Views:38339 Replies:4 FollowUps:8
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I have purchased an OBD2 adapter for my laptop in the hope that I would be able to read the fault codes from my 2004 100 series 1Hz Diesel (OBD2 -Wikipedia OBD2 Link for thoses of you that are wondering what I am talking about).

I plug this into my vehicle and get the error "no response from vehicle". There is more to the story than this. My vehicle has been drowned big time so I am not sure if the diagnostics is just not working or there isn't any. I rang Toyota and they said that there probably isn't any on a diesel. Has anyone else had any experience with this diagnostic connector on a Toyota Landcruiser?

I know the unit works because I have tried it in other vehicles.
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Reply By: Member - Graham H (QLD) - Friday, Aug 21, 2009 at 22:03

Friday, Aug 21, 2009 at 22:03
Possibly because the vehicle doesnt have a computer.

The 100TD has a socket that looks like an OBD2 one under the steering column
However it isnt as the vehicle is not OBD2 compliant.

So say Wooders who sell the Scangauge.



AnswerID: 379957

Follow Up By: drowned_rat - Friday, Aug 21, 2009 at 22:18

Friday, Aug 21, 2009 at 22:18
The vehicle does have a compter, in fact it has at least three. Engine management, SRS Airbag and a body computer behind the right hand fuse panel. I am told that there is also another one behind the left hand fuse panel but I am yet to get that out as it involves removing the heater.

You are right about the scangauge compatibility:
Scangauge Compatible Vehicles



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Follow Up By: Gone Bush (WA) - Friday, Aug 21, 2009 at 22:21

Friday, Aug 21, 2009 at 22:21
Unfortunately the 100 series diesel is not OBD2 compliant.

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Follow Up By: Member - Graham H (QLD) - Friday, Aug 21, 2009 at 22:39

Friday, Aug 21, 2009 at 22:39
Didnt I just say that ?????????
LOL
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Follow Up By: Member - Graham H (QLD) - Friday, Aug 21, 2009 at 22:45

Friday, Aug 21, 2009 at 22:45
According to the link you have posted the Scangauge doesnt work on any 80 or 100ser Diesels so I guess that none of them are OBD2 compliant.




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FollowupID: 647290

Follow Up By: Flywest - Friday, Aug 21, 2009 at 23:16

Friday, Aug 21, 2009 at 23:16
Don't know if it is of any help - but when I bought a diagnostic kit for the F 250 from USA - they sent over the software as well as the connector.

You need the right software on your laptop to be able to converse with the onboard computer via the connector.

Next - my connector had something in it called a dongle - you get an unlock code that sets the dongle in the connector with the laptop and your vehicles computer - its designed to STOP you using your connector and software on avery man and his dogs computer in which case the company would never sell another software package and connector.

Dealers/service mechanics buy a more expensive version, that does allow multiple vehicle useage but they pay a lot more for it.

Lastly my F 250 is also non OBD11 compliant and required an extra unlock code from the seller that they email to you for that section of the software, which again cost more $.

It was called "auto enginuity" and allows you to read all 600 odd sensors, diagnose the engine on the run and re program the computer in the vehicle - re flash it - clear error codes etc and perform injector tests and so on and so forth.

Just coz your vehicle has an onboard computer and you have a laptop and connector doesnt mean they can automatically "talk to each other".

Thats how I understand it anyway!

Cheers
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Reply By: Member - Graham H (NSW) - Friday, Aug 21, 2009 at 23:40

Friday, Aug 21, 2009 at 23:40
drowned_rat
ignition must be on that is all lights on dash lite up.
& use the toyota diagnostic connecter under the bonnet on LH side
AnswerID: 379983

Reply By: JohnnyC - Saturday, Aug 22, 2009 at 09:52

Saturday, Aug 22, 2009 at 09:52
G'day Graham,
Toyota did not become compliant with OBDll in Australia until they introduced the 4.5 L V8 diesel in 2006, the connector is there but the onboard software is not, they use their own protocol which they seem to guard closely.
I have a 2005 turbocharged EFI diesel Landcruiser and it is not compliant, you just get a "no response" message.
You can however jump a couple of pins on the OBD connector and the engine fault light will flash fault codes to you similar to most other EFI systems.
Look at Scangauge.com.au for a list of compliant vehicles, and links to find the fault codes.
AnswerID: 380011

Follow Up By: drowned_rat - Saturday, Aug 22, 2009 at 21:38

Saturday, Aug 22, 2009 at 21:38
JohnnyC
Thanks for the advice.
After some researching, I bridged the two terminals E1-TC in the Toyota Diagnostic connector and the Airbag light flashed up three codes: 15, 16 & 31. I guess this means that something must have some life in it after the drowning. No idea what the codes mean yet but I am still looking....

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Reply By: Member - Shane D (QLD) - Saturday, Aug 22, 2009 at 22:27

Saturday, Aug 22, 2009 at 22:27
How much engine managment does a 1HZ have? STUFF ALL
Apart from theft deterent device that can be unscrewed (with a proper tool) I think you will find that its a basic diesel, mechanically injected and overhead valves, if its got feul and air it should go.
The so called electronics on them are for fancy emision control stuff and have no real relation on whether or not it goes.
If you turn the ignition on you should here a click come from the pump, thats the electronic solenoid clicking to open the feul, If there is no clicking, there is no fuel.
If its been drowned as bad as you say,. . . . well. . . . I really think its a mechanic issue.
Is it turning over?
What is it doing?

Shane
AnswerID: 380084

Follow Up By: drowned_rat - Sunday, Aug 23, 2009 at 08:47

Sunday, Aug 23, 2009 at 08:47
The engine starts and runs fine, you are correct, the engine will start and run without the emission computer plugged in, I just have an airbag light up on the dash.

The Vehicle is classified as a repairable write off which requires a VIV check by Vic Roads before it can go back on the road. Part of this process is that I provide a certificate to say that the the SRS airbag system has been checked and is working, this is the case when the vecicle has been in water. This needs to be performed by the vehicle manufacturer. I spoke to the first Toyota dealer and thay quoted a starting figure of over $1,000 labour plus parts, and that is if nothing is wrong with the wiring loom ($2,500+labour) or any of the individual airbag components which go in multiples of $650+ each.
I am trying to identify and correct as many of the SRS system faults before taking it in to the dealer to have my wallet lightened considerably by Toyota.

The irony of the whole exercise is that Vic Roads wants safer vehicles on the road, The current vehicle is a 60 series with its 2 star safety rating, no airbags, tips the scales at almost 3 tonnes, goes well with a turbo motor but doesn't stop half as good as the 100 series. The new vehicle, without the airbags is 3 star rating, and if the airbags work, even higher. The problem is it proving to costly to put it back on the road.
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FollowupID: 647406

Follow Up By: Member - Shane D (QLD) - Sunday, Aug 23, 2009 at 08:54

Sunday, Aug 23, 2009 at 08:54
Oh I see,
SRS stuff, sounds expensive, complicated, must take back to manufature to get fixed expensive, the worst kind of expensive, GOOD LUCK.
Shane
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FollowupID: 647407

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