Power window auto down
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Junior Member
Joined: Jun 2006
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From: NW Burbs Chicago
Power window auto down
On my 2000 xlt the auto down feature no longer works, the window goes up and down fine it is just the auto down feature that does not work. What could be wrong? Any help would be great.
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Originally Posted by GeorgeR
On my 2000 xlt the auto down feature no longer works, the window goes up and down fine it is just the auto down feature that does not work. What could be wrong? Any help would be great.
Mike
Technical Article Contributor
Joined: Jun 2002
Posts: 10,511
Likes: 10
From: Under the flightpath of old ORD 22R
As Gear Jammer made note of, the OTD is a function of a relay, but this is controlled by the GEM ( actually OTD and down on the left front window are both inputs to the GEM ).
If you remove the pwr window switch, the down is closing the light blue w/ black stripe circuit ( pin # 4 ) to :
white w/ black stripe for down : pin #2 on the switch
Gray for OTD : pin #3 on the switch.
Both the white w/ black stripe and Gray go to the GEM, depending on which is signaled the GEM performs the function ( down or OTD ).
the input to the GEM for the OTD closes ground on the OTD relay on pin 86 ( OTD relay is a full size relay ).
If my old mind is still working correctly, the OTD relay is under the oval on the dash on the '99 to '03 ( and '04 Heritage & L ) trucks.
If you want to check that the switch is closing Pin #4 to Pin #3, this would indicate if the section of the switch for OTD is going bad, or if you should look to the OTD relay.
You should have another Full size relay for the trailer tow to temp swap with the OTD relay, or you could use the Accy delay relay, but this could screw up your trouble shooting, if the OTD relay is bad ( need the accy delay relay to make OTD or down work ).
If you remove the pwr window switch, the down is closing the light blue w/ black stripe circuit ( pin # 4 ) to :
white w/ black stripe for down : pin #2 on the switch
Gray for OTD : pin #3 on the switch.
Both the white w/ black stripe and Gray go to the GEM, depending on which is signaled the GEM performs the function ( down or OTD ).
the input to the GEM for the OTD closes ground on the OTD relay on pin 86 ( OTD relay is a full size relay ).
If my old mind is still working correctly, the OTD relay is under the oval on the dash on the '99 to '03 ( and '04 Heritage & L ) trucks.
If you want to check that the switch is closing Pin #4 to Pin #3, this would indicate if the section of the switch for OTD is going bad, or if you should look to the OTD relay.
You should have another Full size relay for the trailer tow to temp swap with the OTD relay, or you could use the Accy delay relay, but this could screw up your trouble shooting, if the OTD relay is bad ( need the accy delay relay to make OTD or down work ).
Junior Member
Joined: Sep 2015
Posts: 4
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From: Alabama
As Gear Jammer made note of, the OTD is a function of a relay, but this is controlled by the GEM ( actually OTD and down on the left front window are both inputs to the GEM ).
If you remove the pwr window switch, the down is closing the light blue w/ black stripe circuit ( pin # 4 ) to :
white w/ black stripe for down : pin #2 on the switch
Gray for OTD : pin #3 on the switch.
Both the white w/ black stripe and Gray go to the GEM, depending on which is signaled the GEM performs the function ( down or OTD ).
the input to the GEM for the OTD closes ground on the OTD relay on pin 86 ( OTD relay is a full size relay ).
If my old mind is still working correctly, the OTD relay is under the oval on the dash on the '99 to '03 ( and '04 Heritage & L ) trucks.
If you want to check that the switch is closing Pin #4 to Pin #3, this would indicate if the section of the switch for OTD is going bad, or if you should look to the OTD relay.
You should have another Full size relay for the trailer tow to temp swap with the OTD relay, or you could use the Accy delay relay, but this could screw up your trouble shooting, if the OTD relay is bad ( need the accy delay relay to make OTD or down work ).
If you remove the pwr window switch, the down is closing the light blue w/ black stripe circuit ( pin # 4 ) to :
white w/ black stripe for down : pin #2 on the switch
Gray for OTD : pin #3 on the switch.
Both the white w/ black stripe and Gray go to the GEM, depending on which is signaled the GEM performs the function ( down or OTD ).
the input to the GEM for the OTD closes ground on the OTD relay on pin 86 ( OTD relay is a full size relay ).
If my old mind is still working correctly, the OTD relay is under the oval on the dash on the '99 to '03 ( and '04 Heritage & L ) trucks.
If you want to check that the switch is closing Pin #4 to Pin #3, this would indicate if the section of the switch for OTD is going bad, or if you should look to the OTD relay.
You should have another Full size relay for the trailer tow to temp swap with the OTD relay, or you could use the Accy delay relay, but this could screw up your trouble shooting, if the OTD relay is bad ( need the accy delay relay to make OTD or down work ).
Technical Article Contributor
Joined: Jun 2002
Posts: 10,511
Likes: 10
From: Under the flightpath of old ORD 22R
Does the driver's side window work in normal down, but not OTD or does the down function not work at all.
The clicking relay symptom sounds like an issue with the motor itself.
You would need to remove the door panel and test to the motor direct.
Here is a thread on the topic of a faulty motor and the window not going down at all.
https://www.f150online.com/forums/el...dow-motor.html
Start with removing the door panel and testing the motor with +VDC to see if it operates correctly.
The other question is if you have had a lot of rain or water on the windshield.
Some times the windshield seal can leak down on the GEM and cause strange things to happen.
The clicking relay symptom sounds like an issue with the motor itself.
You would need to remove the door panel and test to the motor direct.
Here is a thread on the topic of a faulty motor and the window not going down at all.
https://www.f150online.com/forums/el...dow-motor.html
Start with removing the door panel and testing the motor with +VDC to see if it operates correctly.
The other question is if you have had a lot of rain or water on the windshield.
Some times the windshield seal can leak down on the GEM and cause strange things to happen.
Junior Member
Joined: Sep 2015
Posts: 4
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From: Alabama
The window works in normal down, it's just the OTD that doesn't work. The window motor is fine. Never any leaking issues so I doubt it's the GEM
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Senior Member
Joined: Nov 2006
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From: Memphis, TN 38135, USA, Earth
Unplug the driver's switch, turn the key so the passenger's window works, jumper the R/Y wire to the heavier Bk, and momentarily jumper the Gy wire to LB/Bk.
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=69248
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=69248
Junior Member
Joined: Sep 2015
Posts: 4
Likes: 0
From: Alabama
Unplug the driver's switch, turn the key so the passenger's window works, jumper the R/Y wire to the heavier Bk, and momentarily jumper the Gy wire to LB/Bk.
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=69248
http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=69248
Now what exactly will this process be checking?
Junior Member
Joined: Sep 2015
Posts: 4
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From: Alabama
I tried to follow your instructions but something is not correct. You said to "unplug the driver's switch, turn the key so the passenger's window works". I have two plug in connectors on the driver's side panel for the windows. If I unplug either one of them, the passenger's window doesn't operate at all. If I unplug the middle positioned connector (mine is blue), only the rear driver's side window operates. I can't isolate the passenger's window by unplugging anything. Also, should the relay be clicking (activating) when I'm in normal operation and not attempting OTD?
Senior Member
Joined: Nov 2006
Posts: 5,495
Likes: 7
From: Memphis, TN 38135, USA, Earth
Sorry - I described it wrong. Unplug C509 from the driver's switch assembly - it's the connector with a Gy wire, a R/Y, & a LB/Bk. Then make the jumpers as I described before. The 2 Bk wires are in C510. That will show if it's a fault in the driver's switch.
The passenger window won't work once either connector is unplugged, but the key should be in a position that it WOULD work.
The passenger window won't work once either connector is unplugged, but the key should be in a position that it WOULD work.
