Diagnostic box in a NZ AE82 GT

[Al]

Had CEL today when my car decided to cough and splutter on start up, revs bounced around, then immediately shut off. I left it a minute and it restarted.

Went to look for the little diagnostic box and for the life of me couldn't find it.

Do the NZ new versions even have diagnostic boxes? I see there is three yellow plugs coming off a loom by the passenger side windscreen. Looks like two plug into each other, and the other one has a couple of slots with contacts in it. Is that some kind of ancient diagnostic tester?

[jaypines]

Have a look at this: Toyota diagnostics

[Al]

Sweet will have a look, thanks.

[spoonza6]

Check wiring on the map sensor.
Make sure all connected properly


Mine did the same and I found it was that at fault

[Grrrrrrr!]

No3 is diag port apparently.

[xsspeed]

diagnostic terminals should be high on passengers side firewall, near wiper motor and yep looks like no. 3 above

[Stu-]

You can also just bridge the terminals down at the ecu if needed