Engine Diagnostics On An 80?

[Towpack]

Does anyone have one of these plugs mounted on the bulkhead of their 80 and if so what is it used to diagnose?My 80 is one of the last ones made (for the UK anyway) and does not have the EDC injection fitted to the later 100 series.It is also a manual so there is no auto box ECU etc.Asked my local dealer,who are normally pretty good,and their head mechanic had no idea as it was something they had never used.So I'm left wondering what the hell it does?? Don't want to start poking around with a meter incase something goes pop.

[joinerman]

Hiya Phill

Yep got one on mine, 94 Vx auto import


Joinerman

[mac]

Which engine? 1HD-FTE?

[joinerman]

1HD-T Joinerman
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[Towpack]

Originally Posted by mac

Which engine? 1HD-FTE?

Engine is 1HD-FT.The 1HD-FTE was never fitted to the 80 series.The 'E' in the engine designation means electronic injection (EDC).It's adoption was to meet ever tightening emmision laws.

Been trawling through the wiring diagrams and can't find a mention of this plug.I'm starting to think it's either something to do with the EGR system (which I've disconnected anyway) or maybe the cruise control?

[UpsideDown]

The plug shown is a standard Toyota diagnostic plug. Many scanners/lab scopes can plug into these using the Toyota adapter, but without the appropriate software the information will, in all likelihood, be useless.

My Snap On scanner with the North American Asian package will not provide a matching vehicle/engine designation with which to read the data stream. It would be nice to have this software, but I am unaware if it is available (I have looked for it briefly). If anyone from another market area using a Snap On Modis (or similar) has this software, I'd be interested in it.

[mac]

But what does it diagnose? The 1HDFT is full mechanical.

The A442 is electronic and the cruise control on the 80 series have a diagnostic feature but I think it uses the cruise light on the dash- flash sequence I believe.

[UpsideDown]

Originally Posted by mac

But what does it diagnose? The 1HDFT is full mechanical.

The A442 is electronic and the cruise control on the 80 series have a diagnostic feature but I think it uses the cruise light on the dash- flash sequence I believe.

Here are a few suggestions:

Air bags
ABS data
Body control module
Engine sensor readings (temp, tach etc)

Without the software support, it's not possible to plug into it and get useful data... Japan does have a Snap On scanner available to their market that's different than other markets - maybe there are a few answers to be had from 'Mud readers in Japan.