722.6 wiring harness

[e300]

Hi, im going to check the wiring harness for signs of damage tomorrow, does anyone know of any weak points? Or should i completly remove the harness to check it over?

My ml is in limp mode and showing 0 resistance between pin 15 and 38 on the etc plugs.

Thanks

 

[whitenemesis]

Is it atf contamination, wicking up the loom?

 

[e300]

Possibly, is had wicked up to the etc but thats been cleaned up and i have a spare just incase, would atf within the wires cause a fault? Even if theres none in the etc or 13 pin plug.

Thanks

 

[whitenemesis]

I think you have to flush out the loom or change it as the atf will eventually find it's way to the connectors again. Not sure what one might use as a flush though.

Have a word with Olly or Jay. They may well say it's fine as is..

 

[e300]

Oh and just a little history.

The car was driving fine before limp mode came from no where, i have sdconnect and the faults given where p0763 100 and 004.

I checked the 13 pin plug and that was full of atf, that got changed and the etc cleaned.

The faults came straight back after clearing codes so i decided to swap the conductor plate and atf, the old atf was full of metal but thought its worth a try as ive gone this far. Again after clearing codes they came straight back on.

Because of the metal in the atf i thought why not try a whole new (second hand) box. This box is on the car now but still getting the same codes.

Whats the chances of a bad 3-4 solenoid in both boxes? The harness is all i can think of now.

 

[e300]

Ahh i see, maybe filling the plug up top with electrical cleaner every day for a week and see if it makes it down to the transmission plug.

Thanks

 

[e300]

Fixed! Turns out it was the wire for 3-4 shift solenoid, it had become damaged somewhere between the box and the transmission ecu, ive put a new wire in place and its going again, thanks for the help.