Power Door lock not working

[LazyAccent]

Quick question, yes i searched already. but i want to know why does it not work on the drivers side because when i unlock from passenger side all 4 doors unlock but when i unlock the door on the drivers side thats the only door that unlocks and none others. whould this be a faulty wire or is it supposed to be like that?..ect.

[dc_98_cam]

Just a guess .... but there could be a conductivity problem in connector IH2, which is located at the front of the driver side door panel. .... So, remove the interior door panel, and locate the connector ... towards the front of the door .... see p. 42 of the Gen 3 wiring diagram .... online repair manual. Disconnect the connector, clean with contact cleaner spray and small brush, reassemble. .... Maybe rain or car wash dripped down and caused a bad connection.
Not completely sure about this .... is there anything else that you can provide as far as 'symptoms?
A lot of related posts are mentioning broken wires in the area of the driver door hinge... so keep a look out for anything like that.

[eddie926]

If the wire at the driver's door hinge is broken, you won't be able to see it because it's inside the plastic housing. Mine is like that.

If I press the lock switch on my drivers door when the door is closed or barely open, it works fine. If I press the lock switch when the door is farther open it doesn't work. When the door is open, if I press around on the wire down by the hinge, I can get it to work.

Having said that, when mine works, it locks all 4 doors. When it doesn't work it doesn't lock ANY of the doors.

I don't know if a cracked wire like mine could cause your exact symptom, but it's an easy test. Just press around on that wire by the hinge while you're trying to lock the door and see if anything changes.

[LazyAccent]

when i open them from inside all doors open its just when i use the key to open the door they all dont open

[gladis]

My doors have been on the fritz for ages now, I haven't bothered with them

Driver's side:
1) Power lock button locks, but doesn't unlock
2) Key locking unlocks, but does not lock (can't turn key)

Passenger side:
1) Power lock button locks, but doesn't unlock
2) Key locking LOCKs, but doesn't unlock (can't turn key)

Rear Passenger:
Window doesn't work

Rear Driver:
Lock only works mechanically, neither button nor key can lock it.

For my Sienna, power lock no longer works on that door.

Anyone wanna trouble shoot for me

[dc_98_cam]

There is a door key 'lock and unlock' module in the driver side door.
The wires go from connector IH2, mentioned above, to the module.
Look for a light blue wire ... 'unlock', and a light blue with white stripe ... lock'.
It may be that the light blue ' unlock' wire is broken someplace.
Or maybe the IH2 connector is not making good electrical contact where it snaps together ... just spray clean and put back together. ..
Again .... when you take it apart, take a look around and see if there is anything obviously wrong .... broken wires, soda pop spilled someplace ....

The connector for the lock/unlock module is gray plastic ... 3 wires, located near the door lock ...see D17 on p. 34 of the wiring diagram.

[dc_98_cam]

The diagram starting on p. 160 of the Gen 3 repair manual wiring diagram shows all the door lock functions. If you have a test light or meter, you can usually trace through what works ... and what is not making a good connection, or is broken.

[dc_98_cam]

Originally Posted by gladis

My doors have been on the fritz for ages now, I haven't bothered with them

Driver's side:
1) Power lock button locks, but doesn't unlock
2) Key locking unlocks, but does not lock (can't turn key)

Passenger side:
1) Power lock button locks, but doesn't unlock
2) Key locking LOCKs, but doesn't unlock (can't turn key)

Rear Passenger:
Window doesn't work

Rear Driver:
Lock only works mechanically, neither button nor key can lock it.

For my Sienna, power lock no longer works on that door.

Anyone wanna trouble shoot for me

Just curious ... do you have a lot of humidity where you live ? Do you think that might be part of the problem?

[AMScamrySE]

wow...

When you are on the drivers side, one turn of the key opens only that door.. TWO turns opens all doors..

HARD


I would pay for an intelligent question on this forum.

[eddie926]

Originally Posted by LazyAccent

when i open them from inside all doors open its just when i use the key to open the door they all dont open

That's different. If you use the key on the driver's side...

Turn once it unlocks only the drivers door. Turn it twice it will unlock all 4. It's a safety feature.

[gladis]

Originally Posted by dc_98_cam

Just curious ... do you have a lot of humidity where you live ? Do you think that might be part of the problem?

Not especially, a suburb of San Francisco, we get no humidity for 7 months of the year, but its not especially humid during the winter months either.

Plus its garaged about 50% of the time (trades with the Sienna every week)

[dc_98_cam]

Originally Posted by gladis

Not especially, a suburb of San Francisco, we get no humidity for 7 months of the year, but its not especially humid during the winter months either.

Plus its garaged about 50% of the time (trades with the Sienna every week)

Inspect and clean the IH2 connector on the driver side door.
There is a similar connector, IT1, on the passenger side door ....
These may or may not help ....
If you can't turn the key in the door locks .... you don't have much choice except to replace the key locks.

[gladis]

Originally Posted by dc_98_cam

Inspect and clean the IH2 connector on the driver side door.
There is a similar connector, IT1, on the passenger side door ....
These may or may not help ....
If you can't turn the key in the door locks .... you don't have much choice except to replace the key locks.

Yea I'm thinking of doing some trouble shooting on the car this coming winter break, thanks for the hints

[eilros]

My '93 LE has a similar problem.

Driver's side:
1) Power lock switch won't lock/unlock driver's side door but does lock/unlock all other doors
2) Key unlocks all but won't lock doors (can't turn key)

Passenger's side:
1) Power lock switch won't lock/unlock driver's side door but does lock/unlock all other doors
2) Key locking doesn't work (can't turn key)
3) Key unlocking doesn't work on any door even though I can hear the door lock mechanisms working

[dc_98_cam]

Driver's side:
1) Power lock switch won't lock/unlock driver's side door but does lock/unlock all other doors
Passenger's side:
1) Power lock switch won't lock/unlock driver's side door but does lock/unlock all other doors

Might be related to driver side door lock motor, but could also be due to faulty or dirty electrical connection in IH2 and IT1.

Again ... you will have to take a close look at the door hinge areas for broken wires.