G'day, can anyone help with the pinouts for these diagnostic plugs on my Australian 626 GD?





https://imgur.com/a/zBrzVyR

There is no 17-pin diagnostic socket, just these six plugs and the holder. I really need to know which one turns on the fuel pump. Cheers!

 

Non of those look like diagnostic plugs.

You should have the bellow,

 

Thanks for replying. Yeah, my 1998 B2600 has that socket but not my 1991 626. There's just that weird assortment. Anyway, someone on MX6 identified them. Cheers!

https://www.mx6.com/threads/626gd-di...-plugs.283763/

 

the photo with the green 6 way connector is a pre-OBD2 set up.
The 6 way as shown has just 3 wires on it, but only uses two of them, for connecting an LED&1kResistor to for displaying the Error Codes.
To enter Diagnosis Mode on this set up, you need an extra wire to connect that single Green connector to Earth.
On the 6way connector, the LED wires bridge the central 'red' wire, to the displayed GreenBlack wire.
My 1991 626 doesn't have those Single/Triple Black Connectors, so can't help any further regarding FuelPump enquiry

 

looking at the 3rd photo (the 2pinYellow and the single Green connectors)

That Yellow connector is your Fuel Pump Test connector... by connecting a link between both Pins of the Yellow Connector

 

Many thanks tifino. Now I can make an LED lamp. I looked for a diagnostic box, but they're very rare and expensive.

 

some 20 yrs ago I was up in the local Library perusing the range of Gregory and Haynes Car Service/Repair manuals on their shelves... during this I chanced upon a particular publication that was not for a specific vehicle, but instead was an EFI Diagnosis Manual that covered just about every EFI car we'd expect to have found on aussie roads back in 2001... woo hoo! - checked it out and came across a swathe of info relating down to my era of Mazda 626.
Chapter 21: Mazda: Self Diagnosis Codes:
First series covered Mazda EGI up to and including 1987.
The 2nd part delved into all existing models from 1988 onwards.
The main Index of Ch21 displayed the Range Sets from as early as 1985 and up to as far as 1997. (I suspect this 'might' have been a Haynes Manual?)
Duly photocopied my relevant pages of info... and still have those five copied pages (a little tattered and soiled now but still being useful) Anyways, for your purposes; the only Code relevant to 'Fuel' is '25' which displays a fault if the Fuel Pressure Regulator Solenoid Valve is Suspect.....
I am wondering if it would come under 'fair use' if I were to Scan and Post those 5 pages here??? In my practical world each of those 5 pages I have slipped loosely into my Gregorys manual near the relavant subjects in the manual. These pages include the detail of the methods of probing the engine locations with variations covering different eras of mazdas ie 4 code pulses; self made probe versus using a PulseCodeReader; 17 pin set ups etc etc
An extremely useful section details the better way to reset you Codes...
ie I now now longer do a Reset by the -ve batt cable removal while foot on the brake method...
Instead the description of the 'preferred' method I will now detail below:
1. Turn IGN Key to 'ACC'
2. Remove both 60A 'BTN fuse
and the 30A 'EGI' fuse
3. WAIT for 20 secs
and now Replace both Fuses
(I do all the above both fuses simultaneously, using one hand each per fuse )

The above means that you get the Codes 'Cleared, but haven't gone and reinitialised all the ECMs Adaptive Values, therefore no need now to do the usual 20 minutes of Driving that would have been otherwise needed for 'relearning Adaptive Values' hassles...

 

Thanks tifino. It sounds like an interesting book. I just searched on eBay and Amazon. There are quite a few EFI titles including Gregory's, Haynes, and Boyces. I'd bet they're almost identical too.

If only my 98 Bravo showed that fuel code. Just found a broken FPR after hours of testing other parts. Had to buy ten from a Chinese factory because it's cheaper than buying one here :-)

The reset hack is a good one to remember. Mechanics these days have it so easy. The old guys sure had it tough with all the hacks and bespoke stuff.

 

I queried elsewhere relating to fair use policy, but no replies came in; so here are the five pages...

I re-scanned these as pdf pages, from the photocopies I did 20 yrs ago at the Library

 

Wow, that's awesome. Thanks tifino! Glad I started this thread, learned much more than I expected.