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#4097688 - 02/19/21 07:25 AM Illuminated Entry Module Shenanigans
Old_Guy_Stu Online   drunk

Over the Hill

Registered: 04/28/19
Posts: 1928
Loc: Cleveland, OH
Something's up with this thing. Last year during the big single-digit cold snap the interior lights would flash, like someone was welding inside the car. Now, I've got this:



Partial illumination when the module is "sleeping," waiting for input. When triggered it acts normally:



Then it goes back to partial lighting as in the first pic. The FSM just says "solid state" which doesn't help much. Bad capacitor maybe? I'll have to bust it apart and see, when it's not freezing outside.

Not worried about the battery. The lock lights are LED and the battery will die of old age before these draw it down.

Anyone ever see this before?
_________________________

1988 CVLX Formal Roof (Love Boat) POTM July 2019 & Aug 2020, 55K
E-code lights w/ relays, LEDs w/ switchbacks, 15x8 Ansen slots w/ 255/60 BFG's, Kenwood stereo, various hacks.
1988 CVLX (Destroyer) 1998-2001 driven to death 202K
1988 Squire (Chris Craft) 1996-1998 junkyard rescue driven to death 199K

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#4097762 - 02/19/21 02:11 PM Re: Illuminated Entry Module Shenanigans [Re: Old_Guy_Stu]
seebeexee Offline
Rookie

Registered: 08/17/15
Posts: 73
Loc: Salt Lake City, Utah
Originally Posted By Old_Guy_Stu
Something's up with this thing. Last year during the big single-digit cold snap the interior lights would flash, like someone was welding inside the car. Now, I've got this:



Partial illumination when the module is "sleeping," waiting for input. When triggered it acts normally:



Then it goes back to partial lighting as in the first pic. The FSM just says "solid state" which doesn't help much. Bad capacitor maybe? I'll have to bust it apart and see, when it's not freezing outside.

Not worried about the battery. The lock lights are LED and the battery will die of old age before these draw it down.

Anyone ever see this before?


That exact same thing happened to my white '90 CV. The fix was to replace the capacitors in the timer/relay box. While I had the box apart and out of the car, I also cleaned the contacts in the relay with some very fine emery cloth. It worked perfectly after that.

That car has spent most of its life outdoors in northern Utah (extreme hot and cold seasons) before I got it, which likely contributed to the capacitors going bad earlier than ones kept indoors.


Edited by seebeexee (02/19/21 02:32 PM)
Edit Reason: Clarification
_________________________
1989 LTD Crown Victoria LX (Blue)
Garage Queen
37,250 original miles at purchase
43,000 current mileage
Shorty headers, Dr. Gas X-pipe and mufflers, full custom 2.5" dual exhaust system built by me
1990 LTD Crown Victoria LX (Pink)
Daily Driver
33,003 original miles at purchase
33,555 current mileage
Shorty headers, factory-style 2" H-pipe, fake mufflers, factory-style 2" dual tail pipes
1990 LTD Crown Victoria LX (White)
"The Beater"
152,000 original miles at purchase
166,000 current mileage
Equal-length shorty headers, Dr. Gas X-pipe, fake mufflers, custom 2.5" front half dual exhaust system built by me, factory-style 2" dual tail pipes
Factory aluminum driveshaft and limited-slip rear end


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#4097766 - 02/19/21 03:41 PM Re: Illuminated Entry Module Shenanigans [Re: Old_Guy_Stu]
Old_Guy_Stu Online   drunk

Over the Hill

Registered: 04/28/19
Posts: 1928
Loc: Cleveland, OH
Good to know, thanks! Any chance you know the values of the caps that need replacing? I'd prefer to have them on hand when I start, get it done in one shot. Although I suppose it won't kill me to not have illuminated keyholes for a few days.
_________________________

1988 CVLX Formal Roof (Love Boat) POTM July 2019 & Aug 2020, 55K
E-code lights w/ relays, LEDs w/ switchbacks, 15x8 Ansen slots w/ 255/60 BFG's, Kenwood stereo, various hacks.
1988 CVLX (Destroyer) 1998-2001 driven to death 202K
1988 Squire (Chris Craft) 1996-1998 junkyard rescue driven to death 199K

Top
#4097774 - 02/19/21 04:05 PM Re: Illuminated Entry Module Shenanigans [Re: Old_Guy_Stu]
seebeexee Offline
Rookie

Registered: 08/17/15
Posts: 73
Loc: Salt Lake City, Utah
I wish I could remember... I'll see if I can find that info in my records. They were caps I already had in my collection, so they couldn't have been too off-the-wall.

In the wiring diagram, Ford refers to the timer/relay module as the "solid state illuminated entry timer" as part of the illuminated entry system. I never did find a schematic for that particular unit, so I had to just yank it out and crack it open to get the values. I've got a spare from the junkyard somewhere, so if I can find it, I'll take a look and update here.

With the unit removed, you'll actually be interfering with all the lights on the system since they use the same box. So, interior dome and door lights won't work either.
Here's the part of the wiring diagram that shows the "solid state" device:
_________________________
1989 LTD Crown Victoria LX (Blue)
Garage Queen
37,250 original miles at purchase
43,000 current mileage
Shorty headers, Dr. Gas X-pipe and mufflers, full custom 2.5" dual exhaust system built by me
1990 LTD Crown Victoria LX (Pink)
Daily Driver
33,003 original miles at purchase
33,555 current mileage
Shorty headers, factory-style 2" H-pipe, fake mufflers, factory-style 2" dual tail pipes
1990 LTD Crown Victoria LX (White)
"The Beater"
152,000 original miles at purchase
166,000 current mileage
Equal-length shorty headers, Dr. Gas X-pipe, fake mufflers, custom 2.5" front half dual exhaust system built by me, factory-style 2" dual tail pipes
Factory aluminum driveshaft and limited-slip rear end


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#4097906 - 02/19/21 09:56 PM Re: Illuminated Entry Module Shenanigans [Re: Old_Guy_Stu]
Old_Guy_Stu Online   drunk

Over the Hill

Registered: 04/28/19
Posts: 1928
Loc: Cleveland, OH
Cool.

Looks like it's good and borked now. The key rings are full-on all the time, and the interior lights don't come on when I lift the handle. Time to unplug the little monster.
_________________________

1988 CVLX Formal Roof (Love Boat) POTM July 2019 & Aug 2020, 55K
E-code lights w/ relays, LEDs w/ switchbacks, 15x8 Ansen slots w/ 255/60 BFG's, Kenwood stereo, various hacks.
1988 CVLX (Destroyer) 1998-2001 driven to death 202K
1988 Squire (Chris Craft) 1996-1998 junkyard rescue driven to death 199K

Top
#4097954 - 02/20/21 08:20 AM Re: Illuminated Entry Module Shenanigans [Re: Old_Guy_Stu]
Old_Guy_Stu Online   drunk

Over the Hill

Registered: 04/28/19
Posts: 1928
Loc: Cleveland, OH
Unplugged the little monster. Interior lights still work with the door open, so I can put off repairing this SOB. Looks like one of the retaining screws is on the back side of the ground-bus bracket, making this too much to deal with when it's 15 degrees outside.
_________________________

1988 CVLX Formal Roof (Love Boat) POTM July 2019 & Aug 2020, 55K
E-code lights w/ relays, LEDs w/ switchbacks, 15x8 Ansen slots w/ 255/60 BFG's, Kenwood stereo, various hacks.
1988 CVLX (Destroyer) 1998-2001 driven to death 202K
1988 Squire (Chris Craft) 1996-1998 junkyard rescue driven to death 199K

Top
#4098666 - 02/23/21 09:04 AM Re: Illuminated Entry Module Shenanigans [Re: Old_Guy_Stu]
Old_Guy_Stu Online   drunk

Over the Hill

Registered: 04/28/19
Posts: 1928
Loc: Cleveland, OH
FIXED! Photos for the next poor bastard who wants to take this on:



This is the critter in question, up on the ground bus by the gas pedal. Held on by two 7mm screws. One you can see and one you can't.



The module opens from the end and the board slides out. The yellow capacitor on the RH side is the culprit. 10 uF 25V is original, you can replace with higher voltage without affecting performance. If you're like me (1) God help ya (2) you've probably got one laying around. If not, you can use two 4.7s or three 3.3s in parallel. Mark which side is negative (stripe on case) and replace, easy peasy. Inspect the contacts on the relay and clean if needed. I didn't need.

Re-installed and tested, and she's good. Lights up for 25 seconds, and then doesn't. Should be good for another 33 years.

While I was there I fixed the lower cover, which has been busted for some time:






Some aluminum and some glue, and that's good, too.
_________________________

1988 CVLX Formal Roof (Love Boat) POTM July 2019 & Aug 2020, 55K
E-code lights w/ relays, LEDs w/ switchbacks, 15x8 Ansen slots w/ 255/60 BFG's, Kenwood stereo, various hacks.
1988 CVLX (Destroyer) 1998-2001 driven to death 202K
1988 Squire (Chris Craft) 1996-1998 junkyard rescue driven to death 199K

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