what\'s this thing?

[L18M]

i\'m guessing it might be for abs or cruise control?
its just clipped onto the side of the ecu.
thanks

[grinder]

not 100% sure - but they all have them !! LOL

[L18M]

lol, mine didnt

[1990_fc3s_t2]

mine doesnt either only seen them on some jdm ecu\'s??:confused:

[grinder]

ahhhhhhhhhhhhhhh - could just be on the JDM then

have the UK FC\'s got the wiring for them ?

when i swapped out my JDM ecu for a UK one - i just bolted that back on the side and plugged it in

[1990_fc3s_t2]

I dont believe they do, could be wrong but im sure there is no spare connectors around that area?

Does yours plug into the main harness that the ecu plugs into?

[1990_fc3s_t2]

Im going to have a gander while its still light.

[grinder]

yeah i think there is an extra plug for it .. like you say though - no idea what the hell it does !! LOL

[L18M]

i dont think my jdm fc had a plug for it.

[1990_fc3s_t2]

couldnt see very well by the time i found my keys but i only found one spare connector and its a good distance from the ecu.









Oh yeah check out my rusty floor!:eek:

[L18M]

ew, nice rust lol
i should of mention the black \'thing\' is male connector and has 2 rows of pins. top row has 4 flat wide pins and bottom row has 3 wide flat pins.

[1990_fc3s_t2]

It seems a mystery, had a look on rx7club and they also have no real clue what it does, a few wild theorys though...jdm speed limiter? black box of death or some sort of relay, i like black box of death!:rollin

http://www.rx7club.com/showthread.php?t=259810&highlight=ecu+black+box

http://www.rx7club.com/showthread.php?t=649446&highlight=ecu+black+box

[Prof]

I don\'t have it on the UK cab.
 
I know what it isn\'t:
 
EC-AT - for Automatic transmisson cars - that lives on the passenger side wall above the ECU\'s.
 
ABS ECU - that is the bigge long box that\'s thinner than the main ECU - but the same length - has the big connector on the side.
 
Power Steering CPU - not sure where that is - but it\'s not that.
 
AAS - the automatic suspension adjust system on some US cars - I\'ve some of the wiring for that - and the ECU for it lives in the boot area.
 
 
I guess to really know what it is, you\'d have to work out where it\'s connected to.

[1990_fc3s_t2]

so its got to be for the jap cars only, what do they have that euro and a spec cars dont? :xconfused

[L18M]

i dont remember another \'spare\' wire near the ecu in my TII.
maybe pete would know as he\'s re-worked his engine loom?