ScanGuageII

[neptune Lurker Find all posts View Profile Close neptune]

I bought a scanguageII , only after I asked the buyer if it would fit my 90series.....

This was there answer:-....

"According to the Manufacturer if your vehicle was made after 1996 (which your was), it has an OBDII connector that ScanGaugeII will fit.
It also works on the Toyota Land Cruiser 1995 and above.
The only significant difference with the Prado is the steering is on the right side.
They also state that it will fit all vehicles except the Jeep Liberty with the diesel engine that does not report fuel use or trip functions and some of the gauges."

I fitted the unit but certain feature don't work, like scan....guage...trip functions......

Has anyone else fitted this unit to there 90 Series and did it work for you or did you have problems as well, and were thet fixable????

[xlr8_87 Advanced Member Find all posts View Profile Close xlr8_87]

Re: ScanGuageII

Looked into buying one as well.

Off memory I looked on the ScanGauge website and the website said that they hadn't tested it on a 90 series, but they figured most features would work, but could almost guarantee some wouldn't.

Unfortunately because it's an older car (and hence older ECU) it wasn't designed to electronically monitor everything. For example trip functions would most likely be because the odometer is mechanical.

[voyager4x4 Junior Member Find all posts View Profile Close voyager4x4]

Re: ScanGuageII

viewtopic.php?f=4&t=11974&p=152580&hilit=scangauge #p152580

Guys,
check out this thread in the 120 series section.
It wont even work on all of the 120 series prados and certainly doesn't work on pre D4D cars.

[ntp Addicted PP Member Find all posts View Profile Close ntp]

Re: ScanGuageII

It wont even work on all of the 120 series prados and certainly doesn't work on pre D4D cars.

This was my understanding too when I bought mine for my 2008 D4D.

[VL400 Member Find all posts View Profile Close VL400]

Re: ScanGuageII

Does anyone have any information relating to the data format used in the 90 series? That is if there even is a data interface, I assume toyota have a scan tool that can read the ECU vitals? I was looking at making a small unit to monitor the ECU functions, I currently make them for pre OBDII commodores (also logs to a SD card so can playback recordings) so can adapt the ALDL interface to suit the Toyota. Having no information on what the ECU has in terms of data interface makes it hard to start this project!

[toddy Member Find all posts View Profile Close toddy]

Re: ScanGuageII

Hi VL400,

I have a copy of the repair manaul for the 1KZ-TE Engine for the KZN165 series Toyota Hilux. I believe the engine is the same as the first lot of 120 series engines pre D4D. I think these are the same as the 90 series as well.

The below images are out of this manual which shows what the terminals of the ECU are for




Hope this helps, Cheers.

[williamturner1 Lurker Find all posts View Profile Close williamturner1]

I hope this help:
1990 - 1996 Toyota (like the other manufactures) came up with their own ECM digital data stream called TDCL (Toyota Diagnostic Comm Link).
This transmits a few basic engine parameters at a snail's pace (taking 1 sec!).

1996 USA forced Toyota to be OBDII compliant. Toyota did, but only for USA models. The rest of the world Toyota continued with it's TDCL snails pace serial data protocol.
OBDI (TDCL) = 100baud = 1.25secs data refresh
OBDII = 10,400baud = 0.2secs data refresh

2006 Australia force Toyota to be OBDII compliant

So an American 1996 4Runner / Tacoma / T100 / Colarado with a 5VZ-FE engine is OBDII.
It has a OBDII port (TDCL3) in the driver's footwell area, and the ECM Pin19 = "SDL"

So an Australian 1996 Prado with a 5VZ-FE engine is not OBDII.
It has a OBDI (TDCL1) "Diagnostic" port in it's engine bay and requires counting the CEL.
The ECM Pin19 = "VF1" serial data stream if TE2 is shorted = SNAIL's PACE LIMITED DATA

It is possible to digitally read the fault codes & digitally read the OBD1 (TDCL1) Serial Data. You can home make something (Arduino or CarTester8000).
info see here: http://toyota.kgbconsulting.ca/wiki/...rial_Interface
DIY for $8 see here: http://www.mr2oc.com/showthread.php?t=520850

Many v. expensive scantools state they will read OBDI fault codes too.
But all these just digitally count the CEL light flashes (via W pin) and take the same time as if a human were doing it.
They do offer the benefit of looking up the code for you and presenting it + info nicely, but google is much more powerful than a library hard coded by a software programmer (not mechanic).


As you can tell ... I have a 1996 Prado 5VZ-FE. I recently changed the head gaskets and now wish to accurately monitor Coolant Temp (+ other parameters).
I may make an arduino put the vehicle permanently into TE2 serial data output mode and transmit via bluetooth to an arduino in the cabin with a LCD to output.
I may splice the ECM wires in the cabin directly into an ardunio and display on an LCD.

But I now know I can't just hook up to ECM Pin 19 and get a nice OBDII stream = (