Hi,

I am new to this forum and would love any help from anyone on this questions. I have a 94 fd in San Diego. I got an engine/transmission/harness/ecu from Japan after my original engine died (low on oil. my bad!). The only problem I have is that although the harness that came with the engine will fit perfectly into the japanese ecu, I do not think it will fit the harness from the dash. I basically need schematics so that the wires could be fused accordingly.

I have looked online for days, with no success. I hope my fellow enthusiasts on this forum will help out. An online pdf would be best, but I will pay for copies from the pages of the service manual. Should just be a few pages for the ecu schematics.

I thank you in advance.

Fawad

 

https://www.rx7club.com/showthread.p...hreadid=257038

 

Despite looking the same. The wiring for the 3 series within the FD generation was changed each time.

Just be aware of that.

Series-6 = 92-95
Series-7 = 96-98
Series-8 = 99-02

The Jap-spec plugs for the series-7 + series-8 are different to the USA delivered series-6 (92-95). The pin-outs are also changed a bit here & there.

Japanparts.com should have access to the Japanese wiring diagrams issued by Mazda Japan. Just be aware they will be in Japanese with very little english.

REgards

 

Using the japanese model system:

type I 91/10 - 8bit

type II 93/8

type III 95/3

type IV 96/1 - 16bit

type V 98/12 - 32bit

type VI 00/10

 

Dude, the series-8 got the 16-bit ECU from 99-02.

The 32-bit ECU is from the RX-8.

Mazda made great noise back in 99 about the series-8 getting the 16-bit ECU. Even have the press release to prove it.

Made similar noises in 03 about the "series-1" RX-8 gettign the 32-bit ECU

 

ahh, yes you're right - I just checked.

actually, you're half right - the ECU changed with the type IV. The ABS unit changed to 16bit with the type V

not sure what I was thinking with 32bit :p

 

I've taken that info from a japanese magazine, but here's a japanese site that backs that up: http://www.asahi-net.or.jp/~cd8t-aid/rx-7.html

Under the III --> IV heading it reads, "ecu ga 8bit kara 16bit ni henkou" in english, "the ecu changed from 8bit to 16bit [in the IV model]"

 

So if I'm right, I will need a plug to fuse to the body harness on my series 6 car, so that it will fit into the 16-bit series 7 ecu?

The engine harness came with the 97 motor and tranny, so I know that will fit right into the series 7 ecu. I'm just trying to figure out what I need to do to get my dash to work off the ecu.

Help!!!!!! heh.

You guys are the best. Thank you again.

 

There are two companies in japan that I can think of that might be able to supply a special harness:

Field 048-875-3038
A-RF 042-946-0916

you could also try RMagic (they've done some pretty good work setting up a powerFC to FC rx7s)

RMagic - 042-764-7077

The bad news - you'll need someone with fluent japanese to ring for you.

otherwise - good luck with the wiring diagrams!

 

The ABS unit to 16bit changed on series VI, i know cause i own a series V

Antonis

 

Correct (apologies) - still trying to re-adjust my brain from the australian to japanese system