transfailsafe after heavy rain

[Sphengali]

Phil - can you please send me a link to the full pin-out ohm check I should be doing? I found docs online, but they are way different values than what you posted..

[RRPhil]

Originally Posted by Sphengali

Phil - can you please send me a link to the full pin-out ohm check I should be doing? I found docs online, but they are way different values than what you posted..

The resistance of the four black-cap EDS solenoids should measure between 5.9 and 6.9 ohms at 20°C and their respective pins at the 16-pin connector are :

EDS 2 = pins 3 & 12
EDS 3 = pins 7 & 12
EDS 4 = pins 11 & 16 (torque converter)
EDS 5 = pins 15 & 12


Vehicle connector


Transmission connector


The green-cap main pressure solenoid (EDS 1) should measure between 5.4 & 6.4 ohms at 20°C between pins 2 & 16.

The three on-off solenoids should measure between 26 & 30 ohms resistance at 20°C :

MV1 = pins 8 & 16
MV2 = pins 9 & 16
MV3 = pins 4 & 16

Obviously these measurements only check the internal wiring and the solenoid winding integrity and not the performance of the solenoids.

Four of the remaining six pins are for the two speed sensors :

Turbine speed sensor = pins 5 & 6
Output speed sensor = pins 1 & 10

and their resistances should both measure between 285 & 365 ohms at 20°C

The remaining two pins (13 & 14) are for the fluid temperature sensor which should have the resistance characteristic shown below :



Phil

[Sphengali]

My transmission guy told me he pulled the pan, checked the solenoids and actuators, and they all checked out. So it's got to be internal wiring or the TCM module itself. I'm really under the gun here, does anyone know a shop in Phoenix area that would be capable of diagnosing this issue?

I'm kinda desperate at this point, my cell is 6o2-three hundred, 1675 if anyone can assist!

John