Need some help with power windows

87 t-66 · 05-19-2009, 10:58 AM

my passenger side power window will not go down. i have tried 3 different passenger and driver switches and still nothing. when i put battery voltage directly to the motor it works fine. any ideas?

My5ABaby · 05-19-2009, 11:32 AM

Check for continuity between the switch and motor.

87 t-66 · 05-19-2009, 12:16 PM

which pins? how would i go about doing that?

My5ABaby · 05-19-2009, 12:21 PM

Since your motors work fine with 12v applied to them, I can only assume they're not getting 12v.

On the PASSENGER side, there should be a Red wire and a Green wire going to the motor from the switch (the circuit includes a 2 prong connector). Going to the PASSENGER switch from the DRIVER side main switch should be a Red/White wire and a Green/White wire (included in a 5 prong connector). If I'm reading this right, when you press the down function on the DRIVER'S side, the Green/White wire and Green wire should have continuity (0, or close to 0 Ohms). If you press the Up function on the DRIVER'S side, the Red/White and Red wire should have continuity.

If you press down function on the PASSENGER side, the Green wire should have 12v going to it and should have continuity with the Black/Blue wire. If you press the up function on the PASSENGER side, the Red wire should have 12v going to it and should have continuity with the Black/Blue wire.

Test to make sure these things are occurring.

There's also a more complete testing procedure in the FSM (15-54).

My5ABaby · 05-19-2009, 12:55 PM

These might help.

87 t-66 · 05-19-2009, 02:12 PM

i will test the switches. i highly doubt that all 6 of my switches are bad...one pair of them i just pulled a couple weeks ago and they worked fine. the driver side works fine, just the passenger side doesnt go up/down.

My5ABaby · 05-19-2009, 02:32 PM

Sounds like there is a bad connection between the driver and passenger switch.

87 t-66 · 05-19-2009, 06:48 PM

Quote:

Originally Posted by My5ABaby

Sounds like there is a bad connection between the driver and passenger switch.

i think i found the culprit...

this plug comes from the door and goes into the cabin. i can not find where it plugs into? i thought there were just 2 green plugs that come from the door harness but this plug is attached to one of the green plugs. anyone know where it goes?

My5ABaby · 05-19-2009, 07:10 PM

That's the connector that goes to the motor. So yes, that being unplugged will do it...

87 t-66 · 05-19-2009, 08:38 PM

Quote:

Originally Posted by My5ABaby

That's the connector that goes to the motor. So yes, that being unplugged will do it...

the motor is already plugged in. that connector is inside the car, not the door.

i just called my buddy with a s4 t2 (which is what i have) and he has the same plug inside the car and there is a place on his body harness for it to plug into. i can not for the life of me find the plug inside my car. i think i might need to run those 2 wires from the driver side somewhere. great.

My5ABaby · 05-19-2009, 08:46 PM

Looks like it's a Red and Green wired two prong connector, just like pointed to in the below picture. Am I seeing this wrong?

87 t-66 · 05-19-2009, 08:52 PM

Quote:

Originally Posted by My5ABaby

Looks like it's a Red and Green wired two prong connector, just like pointed to in the below picture. Am I seeing this wrong?

i have the motor already connected. there are 3 plugs that come into the car. 2 are green, that one is the other one. i already called my buddy and he has the same thing. there for whatever reason is not the connecting plug on my body harness...at least not that i can find. i need to figure how to run these wires from the other side or something.

87 t-66 · 06-08-2009, 02:06 PM

swapped the door harnesses from an 86-87 model (what my front harness is) and the window works now. it is very slow to go up but goes down fine. should i swap out the regulator or could it be something else?

classicauto · 06-08-2009, 03:15 PM

Mine is slow going up as well, I believe its an age/lack of usage thing - the driver's works fine because I zip it up and down alot

I would first lube all the window channels up and make sure its not binding in any of the weatherstripping, then go from there. EDIT: don't use grease either, it'll swell the rubbers, use a silicone spray.

$100T2 · 06-08-2009, 07:06 PM

The first thing anyone should do when looking at window problems is to take apart the switches and clean the contacts with sandpaper. The contacts in the switches are really, really small, and even a tiny bit of dirt can make them slow or keep them from working altogether. The passenger window on my 'vert stopped working, and that was the culprit.

05-19-2009, 10:58 AM	#1
87 t-66 Rotary Fanatic Join Date: Feb 2008 Location: Columbus, OH iTrader: (6) Posts: 161 Rep Power: 17	Need some help with power windows my passenger side power window will not go down. i have tried 3 different passenger and driver switches and still nothing. when i put battery voltage directly to the motor it works fine. any ideas? __________________ 87 T2 90 T2 'Vert

05-19-2009, 11:32 AM	#2
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	Check for continuity between the switch and motor. __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

05-19-2009, 12:16 PM	#3
87 t-66 Rotary Fanatic Join Date: Feb 2008 Location: Columbus, OH iTrader: (6) Posts: 161 Rep Power: 17	which pins? how would i go about doing that? __________________ 87 T2 90 T2 'Vert

05-19-2009, 12:21 PM	#4
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	Since your motors work fine with 12v applied to them, I can only assume they're not getting 12v. On the PASSENGER side, there should be a Red wire and a Green wire going to the motor from the switch (the circuit includes a 2 prong connector). Going to the PASSENGER switch from the DRIVER side main switch should be a Red/White wire and a Green/White wire (included in a 5 prong connector). If I'm reading this right, when you press the down function on the DRIVER'S side, the Green/White wire and Green wire should have continuity (0, or close to 0 Ohms). If you press the Up function on the DRIVER'S side, the Red/White and Red wire should have continuity. If you press down function on the PASSENGER side, the Green wire should have 12v going to it and should have continuity with the Black/Blue wire. If you press the up function on the PASSENGER side, the Red wire should have 12v going to it and should have continuity with the Black/Blue wire. Test to make sure these things are occurring. There's also a more complete testing procedure in the FSM (15-54). __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present." Last edited by My5ABaby; 05-19-2009 at 12:43 PM..

05-19-2009, 02:12 PM	#6
87 t-66 Rotary Fanatic Join Date: Feb 2008 Location: Columbus, OH iTrader: (6) Posts: 161 Rep Power: 17	i will test the switches. i highly doubt that all 6 of my switches are bad...one pair of them i just pulled a couple weeks ago and they worked fine. the driver side works fine, just the passenger side doesnt go up/down. __________________ 87 T2 90 T2 'Vert

05-19-2009, 02:32 PM	#7
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	Sounds like there is a bad connection between the driver and passenger switch. __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

05-19-2009, 07:10 PM	#9
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	That's the connector that goes to the motor. So yes, that being unplugged will do it... __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present." Last edited by My5ABaby; 05-19-2009 at 07:15 PM..

06-08-2009, 02:06 PM	#13
87 t-66 Rotary Fanatic Join Date: Feb 2008 Location: Columbus, OH iTrader: (6) Posts: 161 Rep Power: 17	swapped the door harnesses from an 86-87 model (what my front harness is) and the window works now. it is very slow to go up but goes down fine. should i swap out the regulator or could it be something else? __________________ 87 T2 90 T2 'Vert

06-08-2009, 07:06 PM	#15
$100T2 Big Daddy Join Date: Feb 2008 Location: Rhode Island iTrader: (2) Posts: 419 Rep Power: 17	The first thing anyone should do when looking at window problems is to take apart the switches and clean the contacts with sandpaper. The contacts in the switches are really, really small, and even a tiny bit of dirt can make them slow or keep them from working altogether. The passenger window on my 'vert stopped working, and that was the culprit. __________________ Hell hath no fury like a rotor blown.