EATC Forum Posts: "EATC - I'd Like To Disconnect Some Actuators"
(JPOST-LincolnsOnline.com)  -  (JPOST LincolnForums.com) 
 

Power Steering Pressure Switch leak
Sudden failure leaking lots of power steering fluid out of the power steering pressure switch.  Topping off the power steering fluid with Mercon V (correct specification).  Replacement power steering pressure switch calls for Duralast PS496 (same as 04 MGM).  Purchased Duralast PS496 from Autozone and changed it out (super easy).  No more leaking.

Installed old 400watt inverter that I took out of 97 Crown Victoria.  (AC Delco purchased 2007)

OIL STATUS: From what I can tell I have not yet done an oil change on this car since it has not been put on the road yet. The oil still looks clean.

PARASITIC BATTERY DRAIN
When the battery is first hooked up, there is a parasitic drain of about 2.5amps for a period of minutes, then it drops down to about 250mA. It seems the radio and inverter come on during that initial battery connection.

BATTERY / ALTERNATOR
There possibly seems to be an alternator or battery issue as the charge voltage of the alternator seems lower than it should be.  OR, the battery is going bad.  I shut the car off and put my battery charger on the battery, even disconnected from the car, and it is taking a charge for hours initially reporting 50% charged.   That is strange.  Need to investigate this more.
Upon further inspection, the battery seems to be taking a charge and is good.
The alternator seems to be fine as when the engine is revved to 2,000RPM, 14+ volts are reported.
I think the issue is at-idle low-battery-voltage that is common with Panthers.
One oddity: When I disconnected the battery the engine stalls out within about 5 seconds due to decreasing voltag (I had the AC cranked, and may have had the lowbeams & highbeams on).
(JPOST)
 

6/29/25> Put the door panel back on.
 

It is unable to self-test the DDM but it did pull the door code.  Clearly the DDM has a problem.
 

Ran numerous EATC self-tests:
1263 (intermittent): Panel (dash vents) / defrost door actuator.
2267 (intermittent): Passenger side blend door failure or short (the passenger side blend seems to work fine)
2266 (persistent) LH/Drivers Side Blend Door Failure or Short (The driver's side blend seems to work fine)

Recharged the AC. 
It blows nice and cold now. I put an oring on the low side cap - We'll see if this helps with the refrigerant leak or not.  I also ruined the high side cap as it will no longer thread on and it loosely fits now. Dorman 54374 2-pack looks like it would fit both low side and high side.

NEW ELECTRICAL ISSUE
Suddenly, the door locks (including keyless remote) and automatic interior lights no longer work.
Could be issue related to DDM (Driver Door Module).  (Youtube vid).  I checked the fuses that online resources indicated.
I took apart drivers door, removed DDM (6W1T-13C791-BB), opened it up, and noticed lots of corrosion on the circuit board. I cleaned it up with hot soapy water and a scrub brush, thoroughly dried it with compressed air, then applied spray silicon to both sides of circuit board and inside of case. Reassembled and tested it on car:  It worked for a while then stopped responding again.  Then it worked for a while and stopped responding again.  Not sure what the issue is.  Perhaps it needs to be replaced.  Took it apart & put it in front of fan / AC & in front of a hot blow dryer.

If I replace it with a used purchase online, I will likely not have the door code. Have to use Forscan to pull it.

AC airflow routing: There are apparently 5 actuators, 2 of which require the dash to be removed.

Ran a diagnostic on the EATC (FLOOR+OFF, then AUTO):
-2266 LH/Drivers Side Blend Door Failure or Short (The driver's side blend seems to work fine). YOUTUBE HOW TO.  (9W1Z-19E616-A  YH-1753)

-1242 recirculation door. This would make sense as nothing happens when the recirc is turned on and off; it appears to stay NOT on recirc, but on outside air mode as I cracked the window and there is significant airflow out the window.

-1263 Panel (dash vents) / defrost door actuator.  (If the actuator has to be replaced, dash removal is required). YOUTUBE HOW TO . But after I ran the AC for a while the air stayed coming out of the dash vents.
From his video,
Ford updates....
To fix 1263: Ford Part # 9W1Z-19E616-B or YH1754
To Fix 1264: Ford Part # 9W1Z-19E616-C or YH1755
From a forum:
"YH1755 Floor Door Mode Actuator 9W1H-19E616-CA UPC 031508569690
YH1754 Defrost/Panel Door Mode Actuator 9W1H-19E616-BA
The above are the 2 that require the removal of the dash
FOUR SEASONS 73082 Recirc Door Actuator - identical to original 3W1H-19E694-AA
I used the Four Seasons as it was 1/3 the price of the Ford and it's easy to replace.
As it turns out it was an actual Ford part with a Four Seasons sticker.
I'm wondering if Ford sources them from Four Seasons?"
I did not reset the codes. Apparently hitting defrost will clear the codes.
Replacement cover put onto car as the old cover was sunbeaten and had holes.

AC refrigerant remains low (not empty as compressor did cycle, albeit frequently, and refrigerant lines got cold/hot respectively); I did not charge it.

Another good resource for Lincoln EATC -  03 ONWARDS TOWN CAR EATC SELF TEST:
WEB - LOCAL

Pressed FLOOR+OFF then RECIRC: Code 1676:  "Voltage out of range. Go to pinpoint test H". I reset it by pressing FRONT DEFROST, and the code didn't come back.

I ran another diagnostic Ran a diagnostic on the EATC (FLOOR+OFF, then AUTO): then CLEARED it by pressing FRONT DEFROST.

I Ran another diagnostic on the EATC (FLOOR+OFF, then AUTO):
1242 - recirc door - no dash removal required - THIS IS DEFINITELY A PROBLEM AS OUTSIDE AIR IS DEFINITELY BEING PULLED IN.
2266 - LH/Drivers side blend door (fairly easy fix) - THIS DOES NOT SEEM TO BE PROBLEMATIC

It seems like the AC weirdness calmed down the more I used it and it kept blowing out of the main dash vents when commanded albeit a short delay when commanded. The main problem seems to be 1242 recirc door.  HOW TO. I ran an EATC test and noticed that the recirc door didn't move so either the acuator is bad or the EATC is bad. I removed the recirc actuator.  The part number on it is 3W1H-19E694-AA with Ford stamped in the plastic, and it looks like it is probably original.
Ford part number 9W1Z19E616D UPC 031506589706
Motorcraft part number YH1756
Four Seasons: 73082 < This is what I ordered from Rock Auto.
I took apart the actuator and found that the motor will run at times, but also has some kind of odd intermittent internal short. A replacement recirc actuator should solve the problem.

FOR REFERENCE ONLY: Passenger side blend door actuator YOUTUBE HOW TO.
 

Ran a diagnostic on the EATC (FLOOR+OFF, then AUTO):
-2266 LH Blend Door Failure or Short

-1242 recirculation door (unconfirmed). This would make sense as nothing happens when the recirc is turned on and off; it appears to stay on recirc mode.

-1263 defrost mode door actuator (unconfirmed but likely).

I did not reset the codes.  Apparently hitting defrost will clear the codes.

Problem With HVAC Vents
Even though I have the cabin vents selected, it wants to blow from the HVAC through the defrosters, then maybe switches to the cabin vents, then maybe switches to the floor vents, seemingly at random.  Oring issue in EATC?
(JPOST)

AC compressor is cycling frequently; I believe refrigerant charge is low. It is oily around the low side schrader valve and may be leaking from there.
 

LR window won't go down.
(JPOST)
 

-If ran and drained and added another 5qts:
5/14.5 = 34.4% of that mix of new & old fluid is new.
34.4% X 65.6% = 22.5% of this new mix is new fluid, and therefore 65.6 -22.5 = 43.1% old fluid still remains. 
I DONT THINK IM GOING TO DO THIS SECOND ITERATION.
I'll just drain and refill in maybe 10 or 20, 000 miles.
Here's an idea: Pull transmission drain plug and refill 4-5qts every 10,000 miles, with the oil change, thereafter.

Next transmission pan drain should be at 90,000mi with the 5000mi oil change.

-Car shifts normally as before.

I installed a battery cutoff switch on the negative terminal.

The aftermarket lead positive terminal broke off, so I replaced it with same.

I installed 2 x 20A fuse holders at battery for future run to front passenger seat for inverter.

I ran 10 gauge wire from the 40A fusebank through a relay above the driver's feet, and to the passenger seat.

AC Vent Problem: There is clearly some inconsistencies with regard to the AC vent blow; It will not always blow out the front vents.  I suspect an o-ring replacement issue much like I had to do on the MGM.
 

To order a transmission pan with drain plug - Dorman 265-813 UPC 019495344810
 

There is a left side marker light out which I replaced. 
At the same time I noticed the headlights aim was off so adjusted that a bit (not perfect).