I've managed to take some pictures of some damaged ECUs of a FL2 that took a bath in the ocean's salt water.
Many thanks to Vali, the guy who supplied the ECUs for the photo session.

Here they are:

http://www.flickr.com/photos/82104905@N08/sets/

Last edited by alex_pescaru on 7th Jul 2012 2:15 pm. Edited 1 time in total

Doesn't appear to be much damage there.

A bit of IPA and a brush it will be as good as new  ______________________
2011 Full Fat RR 4.4 TDV8
2012 FL2 SD4 Auto HSE
2013 Kawasaki Versys 650

So what's the story behind it Alex? Was it a mistake made or something we should be aware of if wading even in freshwater?

Last edited by EYorkshire on 6th Jul 2012 5:44 pm. Edited 1 time in total

Dave wrote:

Doesn't appear to be much damage there.

Especially that door ECU...
And I wonder who'll put the life in the hand of that rebuilt airbag ECU...

The engine ECU wasn't on salt water, but after a while it kept shutdown unexpectedly.
Totally or only on some injectors.

The EGR cooler has a small perforation inside and therefore the cooling fluid enters the intake airstream.

EYorkshire wrote:

So what's the story behind it Alex? Was it a mistake made or something we should be aware of if wading even in freshwater?

Some more information about the Central Junction Box after a quick study:

It uses a Renesas M30882 microcontroller (512KB version) with a M32C/80 Series CPU core, clocked at only 8 MHz, even it can handle 32 MHz.
A pretty versatile microcontroller with over 120 I/O pins, 5 serials, 3 channels CAN 2.0B, 34 channels 10 bit A/D, two 8 bit D/A, 40 interrupts, two multichannel timers, DMA, etc.

Working configuration is stored on a 4KB serial EEPROM, a Microchip 25L320E.

Communication with external world is made with the help of Philips TJA1020 LIN transceivers and Philips TJA1040 CAN transceivers.

Now, the driving ICs and the surprises:
Besides the Infineon BTS443 MOSFET power switch (that we know from the schematics) there are also:
Infineon BTS142 - single channel Smart Low Side Power Switch
Infineon BTS6133 - single channel Smart Low Side Power Switch
Infineon BTS3410 - dual channel Smart Low Side Power Switch
Infineon BTS5210 - dual channel Smart High-Side Power Switch
Infineon BTS5234 - dual channel Smart High-Side Power Switch
ST VND920 - double channel high side solid state relay.

All in all, this Central Junction Box is a pretty complex piece of hardware (a small embedded computer) that centralize, process, handle and drive all the information and stuff around the car.

I should think the whole cars had it hasnt it? after being filled up with sea water in all the box sections, youd never be sure of getting the salt remnants out?

All sealed components are tested in a solution of salt water together with a wetting agent. Not unsealed ones though.
They need time afterwards for the salt do it's nasty corrosive work, depends how long these pics were taken after the parts were exposed to salt water.

They do look good though  Another member of the failed FL2 clutch/DMF club, twice.

You're the second person that is saying they look good...
Leave aside the Engine ECU. That one wasn't damaged.
Look at the others.

For example, you name the below module good looking?
http://www.flickr.com/photos/82104905@N08/...451787098/

And besides the testing in salt water you said, you forgot an important thing:
The salt water submerged ones were powered up when they were submerged.
So combine the salt water with a pretty important electrical current and do the math...

Last edited by alex_pescaru on 9th Jul 2012 8:49 pm. Edited 1 time in total

Unsealed Alex. That's what i'd expect.
The sealed ones look ok Another member of the failed FL2 clutch/DMF club, twice.

Indeed...
My English is playing tricks on me, sorry...

Airbag ECU looks a real mess Another member of the failed FL2 clutch/DMF club, twice.