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Driver side door will not unlock - Previa Toyota Cars & Trucks

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U should go to the body tech. it maybe the cabels from inside or the locker is not working as well as it must be

Posted on Aug 06, 2010

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2 Answers

2010 express van


The BCM - body control module is what controls the power lock's , disconnecting power can cause some functions to need resetting .
Have the BCM checked for DTC'S - diagnostic trouble code's , that would be my first step . Do you know what wiring diagrams are an how to read them ? Free wiring diagrams here
http://www.bbbind.com/free-tsb Enter vehicle info. Year , make , model an engine size . Under system click on body & accessories , then under subsystem click on power lock's .

Battery Disconnect or Replacement Problems


Driver Door Unlock Operation
When any of the door lock switches are placed in the unlock position, a ground signal is applied to the BCM through the door unlock signal circuit. Upon receiveing this signal, the BCM grounds the control side of the driver door unlock relay through the driver door unlock relay control circuit. Since the other side of the driver door unlock relay winding is connected to battery voltage, the relay is energized. This causes the contacts to close and complete the path from the DRV LKS fuse through the battery voltage circuit. Voltage is then applied to the unlock side of the driver door lock actuator through the driver door lock actuator unlock control circuit. Since the other side of the the driver door lock actuator is connected to the normally closed contacts of the door lock relay to ground, the driver door unlocks.
The driver door unlock function can also be accomplished by the BCM supplying ground to the driver door unlock relay control circuit by either of the following:
• A keyless entry unlock transmission
• A lock out prevention function

DTC B3130 00: All Door Unlock Circuit
DTC B3135 00: All Door Lock Circuit

Circuit/System Description
When any of the door lock switches are placed in the lock position, a ground signal is applied to the BCM through the door lock signal circuit. Upon receiving this signal, the BCM grounds the control side of the door lock relay through the door lock relay control circuit. Since the other side of the door lock relay coil is connected to battery voltage, the relay is energized. This causes the contacts to close and complete the path from the battery voltage circuit. Voltage is then applied to the lock side of the door lock actuators through the door lock actuator lock circuits. Since the other side of the all the door lock actuators are connected to the normally closed contacts of their respective unlock relays to ground, the doors lock.

May 15, 2018 | Cars & Trucks

1 Answer

Driver side door will not lock/unlock with the remote, but the other doors will.


no you needs a new lock actuator on that door its about $90 installed,
all the locks are on same circuit . sorry about the bad news :(

May 01, 2016 | 2003 Hyundai Sonata

1 Answer

Power door lock - can't use key to unlock door


need to remove the door panel and check the clips that connect to the locking rods possiblr damaged or disconnected

May 11, 2013 | Buick Regal Cars & Trucks

1 Answer

Driver side door locking with remote but will not unlock, if i unlock it with key then remote will unlock all other door, if all doors are locked remote will not unlock the car. Once i manually unlock...


it is not the actuators, try a different remote, you may have an issue with the car security system/body computer not functioning on the unlock driver door command, one press of remote is unlock driver door and 2 presses is unlock the other doors.

Sep 01, 2012 | 2003 Mitsubishi Galant

1 Answer

Similar electrical issues with driver's side door controls. Power locks, power window, and power mirror on driver's side are not functioning. I can manually unlock the door, but the buttons on...


CHECK FUSES FOR POWER WINDOW,CHECK FUSE FOR POWER MIRROR AND CHECK FUSE FOR POWER DOOR LOCK.IF FUSE OKAY DOOR CONTROL MODULE FAULTY ITSELF.

Sep 11, 2011 | 2004 Saab 9-3

3 Answers

Driver side lock


the solenoid may be weak, or it can be lubed. you will need to remove the door panel and see how it works, and try to lube it, or see if there is any binding.

Oct 12, 2009 | 1999 Honda Civic

1 Answer

1998 Toyota 4runner driver side power door lock problem.


probably gonna have to take the door panel off. You say it wont unlock or lock with the key? if thats the case its probably broke inside the door.

Aug 20, 2009 | 2000 Toyota 4Runner

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