Hi Gang,

In today's follies, the electric part of the door locks won't work. Unlocking is no problem, but when I try to lock the car using the rocker switches on the doors or using a key in the driver door. It's as if all the actuators died at once in the locking mode. So something with the locking part of the electric door lock mechanism s is screwy. Thoughts?
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Door locks are controlled by MICU, and internally it uses couple mosfets (transistors) to switch positive/negative signals to supply power to actuator's motors.(basically an H-bridge).

Most likely one out of 4 mosfets burned out, and that's why only one function doesn't work.

 

So what component(s) do I have to replace? I'm likely not gonna futz around replacing transistors, though I did replace my power amp's capacitors.

 

MICU, or interior/under-dash fusebox.

 

Not worth taking to Paul to diagnose for you or are you just trying here first - for first thoughts/impressions?

 

Came here for suggestions before going to Paul's this afternoon.

 

WORTH taking to Paul! Within an hour, he had it working again. There I was thinking I'd have to spring for a fuse panel (Big $$$), but in the end, all it was was a bad connection on the window switch. All he did was unplug the switch, plug it back in, and Presto!

Today alone, Paul saved me hundreds of dollars by finding out and fixing what was actually wrong, whereas a stealership would have gotten me for a new fuse box/MICU unit.

if you're in the NYC/NJ area, Paul's the ticket.
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Saweet!!!

When I lived outside of Boston I had an equivalent to Paul and he was awesome. Like you he literally saved me 1000's of $$$ over the years.

 

I spoke too soon folks! It was the MICU unit after all. Picked up a fuse panel from a junkyard for $50 from a TL that supposedly had less than half of my mileage of 366K. Paul put it in yesterday. All is right with the world again.
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What does the inside of a MICU look like? Why does it go bad? Just a bunch of copper traces inside? A Circuit board? Or A bunch of crumbled of wires? ha!
Since you apparently have a bad one.. Break it open and take a few pics.. =)

 

Had it open. There's a circuit board and tons of traces. Sorry, no pics.

And that's "Had" a bad one.

 

so when you replaced it, did you just remove all the fuses and relays and remove and replace? Does it just screw in? curious!

Thanks

 

The replacement came with all the fuses and relays from the car it came from. They all worked.

 

Do you know what part paul replaced or worked on for the MICU fix?

 

MICU is build-in into the under-dash (interior) fuse box. Fuse box and MICU is one part.

And if somebody is interested in replacing only the broken part, then most likely one of the mosfets went bad.
I replaced couple of them in BMW ECMs, but in that case mosfets were responsible for driving ignition coils.
Easy enough if you have soldering iron and some practice.

Those guys are those square/rectangular black three or two legged things, although mosfet on the MICU might look much smaller



Or something like:



If you have wiring diagram and connector pinout, one could figure out traces on the PCB and track down the potential culprit.


But then for $50 why bother? I would with my car but probably not with client's - too much work getting MICU out, figuring out what went bad, ordering parts, and then most likely putting bad MICU back in to wait for parts to arrive.
But with those BMW ECMs problem was common enough for shop to have bunch of those guys in stock (and they are like $1 a piece or so), so full repair usually took hour or so.

 

Those traces and connections in there could be aged as well, Yes, electronics ages along with everything else. Mine had a tiny burn in one of those tiny foils. Too much BS to futz around with, so for $50 or even the $75 that most junkyard places wanted, I have peace of mind.
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Making a mental note to snag the under-dash fuse box from the next junkyard car I see.

 

I’m in the NYC/NJ area , where is Paul and how can I connect with him,
I have a 2006 automatic 3.2 Acura TL
I swap over all these parts out of a 2008 TL Type-s
Engine and engine harness
Transmission and subframe
Ecu with keys
Cluster
My only problem (which means the cars is running) is that I can’t read the ECU with a scanner, the scanner reads no link/ no communication

I hoping that there’s a way to read the ecu
Before I decide to get a wreck type s and swap over everything from the interior wiring dashboard fuse boxes SRS unit seats possibly every thing panels all that
Anyone have a type s for sale don’t need the engine

Also some please give me Paul information

 

This was Paul's original thread - https://acurazine.com/forums/ny-nj-3...rth-nj-883797/

I don't remember all the history or his banning but @DMZ has used Paul over and over through the years. He can provide Paul's contact info.

 

I do not have the 06, as I told you on PM but the 06 could be similar to the 05, like mine.
the 07/08 uses a new FCAN connection to communicate with the ECM
The 04/05 uses a separate Kline for offboard communication(scantool) which connects to the ECM.
On the 04/05 DLC side, there is no FCAN connection pins, the 06 may be like that too.. If so, then you must run new hi and low FCAN connections to the DLC from any FCAN junction point.
The 07/08 ECM is wired to a FCAN junction point according to the schematics.. So the ECM is programmed to talk via the FCAN. Even if you change the DLC side, and wire it up to the FCAN, it still will not talk to the ECM until the ECM is also wired to any FCAN junction point. The ECM will not talk on a k-line because they changed it. And if your 06 is WIRED in the harness like my 05, it will never work until you make the right connections at the DLC AND the ECM.
Presently, if you tell your scan tool to use the 06 TL connection type, it won't work And if you tell it to use the 07/08 connection type , it won't work.
But if you get a new harness that runs from the ECM to the DLC, it might work. Just depends on all those little junction connectors too..
After all your changes, you would tell the scantool you have an 07/08 of course... I am sure you know that
If you do not have HELM books for 06 and the 07/08, and compare to see what changed, then you are doing it blind. Your only hope it to change out all the wiring harnesses.
The DLC changes are only 3, or 4 changes. But on the ECM side, you need to compare both HELM books for each PIN on the ECM.. That is 21+24+22+17+31 pins... 115 pins?
Or get a new harness for inside and outside. LOTS OF TRACING.. But hey maybe it is not that bad! Just depends..
If you get all new harnesses inside and out then you won't have to nitpick every connection.. Otherwise, it is a tedious process.
https://photos.app.goo.gl/aktRPN9d14UcJ5tTA
https://photos.app.goo.gl/WG8g8MfmiNUSgvmw8
https://photos.app.goo.gl/2fZawaCGz8j7HcLD7
https://photos.app.goo.gl/N8RCNxvKnFWTnkMD9


QUOTE=Gullyguy;16864412]I’m in the NYC/NJ area , where is Paul and how can I connect with him,
I have a 2006 automatic 3.2 Acura TL
I swap over all these parts out of a 2008 TL Type-s
Engine and engine harness
Transmission and subframe
Ecu with keys
Cluster
My only problem (which means the cars is running) is that I can’t read the ECU with a scanner, the scanner reads no link/ no communication

I hoping that there’s a way to read the ecu
Before I decide to get a wreck type s and swap over everything from the interior wiring dashboard fuse boxes SRS unit seats possibly every thing panels all that
Anyone have a type s for sale don’t need the engine

Also some please give me Paul information[/QUOTE]

 

Ok thanks I think I’m just gonna get an wreck Type s and swap everything over