I looked at the FSM and i could only sort of guess what it is as the wiring diagram in the FSM shows wirings PER SYSTEM, not on each device. So i was hoping someone here recognize these 3 parts. And maybe even know where i can find the actual pin out diagram in the FSM.

CPU??


Cruise control controller?


There's also that device mounted on the steering columb. That's the power steering computer right?



also, anyone recognize this plug? if so wtf is it?






thanks a million guys. I'm trying to take out all the useless wiring in the process of installing the microtech and relocating the battery. Kinda a pain in the ***...

 

CPU/ body computer and cruise control computer. You only posted two diferent pictures. If you are talking about the blue plugs, they are for cluster controls, such as headlights, turn signals and wipers.

From the factory service manual:



and installing an aftermarket ECU, you should not be touching the CPU, as it is not related to ECU functions at all, but rather things like warnings, brake lights and turn signals.

 

ohhhhh where did u find that in the FSM? couldn't find that anywhere :S
is there a pin out diagram somewhere also? gets kinda hard following all those wires physically heh

i'm relocating a lot of things and taking out all the useless wiring too. I'm not using the idiot cluster at all, so i'm taking out the wirings for that also. I kinda want the car to be clean of all useless stuff so i won't regret not doing it while the car is apart. hehe thanks man

 

sounds like you're creating a clusterfuck of epic proportions. alot of that wiring is spiderwebbed and you will never be able to trace it all or get it back in there and work properly. imo you shouldn't even touch the wiring on the driver's side of the car. just yank out the passenger side engine controller harness and use portions of that, leave the rest of the harness intact and if you really are intent on removing things just get rid of the control boxes you dont need and cut and seal the connector/wiring. the ECU is a good box to keep since it controls the idiot cluster among many other important things, imo its an idiotic move getting rid of it.

 

Both are in the Body Electrical chapter.

You really consider warning lights for low oil, low coolant and low charge unnecessary or useless? These could save your engine from a very expensive rebuild. Low brake fluid is also something I'd want to know about straight away. There is nothing to be gained from removing the warning cluster, but the increased risks should be pretty obvious.

The ECU doesn't control the warning cluster (except for the S5's check engine light). If you meant the CPU, that doesn't control it either.

 

being my car was originally a NA now has a S5 motor in it, a LOT of those things don't work anyways cuz they never did a thorough job installing it when i brought it from the previouse owner. I rather check my fluid level every time i'm out of the car rather then keeping the idiot cluster in there. I need the space it's currently in for something else. Plus i'm running other gauges to keep me informed thx for the advice though nzconvertible


i really want to find out what each control box does EXACTLY what on each wire before I take it out. Been ok so far tracing the wires of things I won't be needing and eliminating it.

call it a pet peeve or w/e but it really bugs me when i have loose useless wires sitting around...

 

you will find a lot of spare wiring and connectors in the car from the factory with additional uninstalled options. sounds like you are better off just stripping the car and running new harnesses if you are wanting to clean things up that badly.

 

You mean it's an S4 with an S5 engine? Or an NA with a Turbo engine? What exactly have you done? Nothing in you posts, sig or profile explain this. That makes it harder to give you the right info. Anyway, most of the stuff you're looking at shouldn't be affected at all by an engine swap. What you're trying to do doesn't really have any benefit. It's just a bunch of work with the distinct possiblilty of disabling useful items.

Checking your fluids regularly won't help if you split an oil or coolant hose while driving. And while people say they look at the gauges often while driving, in reality you look at them far less than you think. A burst oil cooler line for example will stop oil flow to the engine and could easily result in engine damage before you notice the gauge reading is down. And I doubt you have a brake fluid gauge...

But hey, as long as you understand the risks you can do whatever you what to your car.

 

lol ya i know the risk lots of cars don't have them anyways. I'm not completely throwing the sensors out of context. I'm going to try and see if i can run LEDS else where to do what the idiot cluster does or relocate that thing somewhere else.

It's a S4 NA chassis, with a S5 turbo engine.

I'm honestly considering this being i don't really need anything besides the CPU. All the other controllers are useless now...

 

oops. i just realize i messed up on the first post. the 3rd pic was the wrong link



the plug is near the engine bay fusebox. Couldn't remember if it was plugged to anything for the life of me. Been trying to remember\search for a few days. Just follows to a few power wires
6 wire plug, with 4 wires in use
Wires are White\red, White\green, White\black, Black\red
shitty pic i know. I'll replace it with a better one tomorrow sry!

 

Lots or cars aren't rotaries either. Rotaries are far less tolerant of overheating than piston engines, and the oil system is responsible for ~30% of the engine's cooling. That's why Mazda have installed these warning systems in most of the rotary-powered cars they've ever made.

Good idea. I've seen the warning cluster relocated several times. Not hard to do.