Question about 2002 Toyota Camry

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Power locking system

The power locks work when the car is placed in drive, but will not unlock. The remote does not unlock them nor does the main switch by the driver.

The remote will open the driver's door only.

Where do I start

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  • nimjewell Sep 12, 2008

    I do not have a remote starter. The remote I was referring to is the key fob. Sorry if I confused the issue.

  • nimjewell Sep 12, 2008

    No, I can push the unlock repeatedly and the other doors will not unlock. They will not unlock by using the button by the driver nor by using the key in the driver's door.

  • nimjewell Sep 15, 2008

    Thanks for the help and advice. For the time being, I have just reprogrammed it so that the doors do not automatically lock when putting the car in gear.

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  • Toyota Master
  • 1,861 Answers

Do you have a remote starter installed in this vehicle? If so, you body computer is probably compromised. Aftermarket remote starters kills the body ECU with unfortunate regulararity.

Posted on Sep 12, 2008

  • 1 more comment 
  • Toyota Ed Sep 12, 2008

    If you push the remote "open" button a second time, after the driver's door unlocks, dor the other doors unlock?

  • Toyota Ed Sep 13, 2008

    Well, unfortunatly, it looks like you need a body ECU. Personally, before I bought one, I'd get a Toyota tech to look at it. Body ECUs are not cheap, and they are a PAIN to install. I have done several in the last couple of years. Same problem as you describe.

  • Toyota Ed Sep 15, 2008

    You are quite welcome. I just wish I could have done a better job for you.

    Toyota Ed

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4 Suggested Answers

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SOURCE: 96 ford explorer door will not lock with switch

I do have a book on the 1996 but no on me but I have had a problem with it the same, Get in and sit in the drivers set and push lock from the in side and then do the same but this time unlock it and then get out and try to use the remote. if no then try to do the same thing but in the passenger side. lock and then unlock. no then call the ford dealer shop and they have a alarm department that will help you and I know because I had then do a job on one of my other cars and I was charged $20.00 he did it on a side job. Nikki2913

Posted on Dec 18, 2008

  • 234 Answers

SOURCE: Drivers Door Lock Problem

You will probably need to replace the power door lock actuator.

Here's a link to one similar to yours.

http://autorepair.about.com/library/a/1g/bl467g.htm

You can probably get a used one from a salvage yard.

Try this site to find one near you:
http://car-part.com

If you need more help post a comment.

Tim

Posted on May 01, 2009

  • 129 Answers

SOURCE: Remote control no longer opens the lock

Sounds like the button to unlock doors on the fob is worn out. You can purchase a new one or used from your local recycle yard.

Posted on Jun 01, 2009

  • 412 Answers

SOURCE: power door locks do not work

2004-2005 CARAVANS HAD A SOFTWARE ISSUE IN THE BODY CONTROLLER..REMOVING AND REINSTALLING IOD FUSE IN UNDERHOOD FUSEBLOCK..THERE IS A SOFTWARE UPDATE FOR THE BODY CONTROLLER FROM CHRYSLER..TAKES ABOUT AN HOUR TO COMPLETE..AS FAR AS I KNOW,THEY ARE ONLY ONES WHO CAN DO THIS

Posted on Sep 24, 2009

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1 Answer

Door lock dont always work


What door lock doesn't always work ? One or all of them . This is a complex set up for these door locks ! The switch is an input to the BCM - body control module . There is logic involved in the microprocessor , there are relays built in to the BCM ! Could have a DTC - diagnostic trouble code stored in the BCM ! Could be a bad connection at the BCM or master window switch ! A bad ground !
The power door lock system consists of the following components:
?€¢
Body control module (BCM)


?€¢
DOOR LKS fuse


?€¢
Driver door lock actuator


?€¢
Driver door lock switch


?€¢
GMLAN serial data link


?€¢
Keyless entry transmitter


?€¢
Passenger door lock actuator


?€¢
Passenger door lock switch


?€¢
Remote control door lock receiver (RCDLR)


The DR LCK fuse supplies battery voltage to the body control module (BCM) for the power door lock system. The BCM supplies and monitors a reference voltage to the driver and passenger door lock switches through the door lock switch lock/unlock signal circuit. Each door lock switch receives ground at G300 which is also the ground for the door lock and unlock relays located in the BCM. When a door lock switch is placed in the lock position, the reference voltage is switched to ground and the BCM senses 0.0 volts on the door lock/unlock signal circuit. When a door lock switch is placed in the unlock position, the reference voltage is switched to ground through a 1.5k ohm resistor that is internal to each of the door lock switches and the BCM senses approximately 2.9 volts on the door lock/unlock signal circuit. The BCM interprets what position the activated door lock switch was placed in based on the voltage drop.
The BCM, upon receipt of a lock or unlock switch signal, will switch the appropriate door lock/unlock relay coil control circuit to ground causing the appropriate door lock/unlock relay to energize. With the relay energized, voltage is applied to the door lock actuator control circuit causing the door to either lock, or unlock depending on what command was received from the power door lock switch or remote control door lock receiver (RCDLR). When a power door lock/unlock relay is not energized, the switch contacts are normally grounded through the BCM which provides ground to the appropriate door lock actuator for the lock/unlock function being performed. The power door lock/unlock functions are performed by reversing the flow of voltage through the door lock actuator control circuits. The BCM has three internal drivers for the power door lock system. Driver door unlock, passenger door unlock and all door lock. This is done to isolate the driver door lock actuator so it can be unlocked separately from the passenger door. For additional information concerning keyless entry, refer to Keyless Entry System Description and Operation.
This is one you may want to take to dealer or some other ASE certified repair shop ! To do this right you need a Tech 2 scan tool !
Ignition ON, observe the scan tool Door Lock Switch parameter while using the driver and passenger door lock switches. The parameter should change from Idle to Lock and Unlock.
?‡'
If the value does not change, refer to Door Lock Switch Malfunction.

Command the doors to LOCK and UNLOCK with the scan tool, the door lock actuators should LOCK and UNLOCK when changing between the commanded states.
?‡'
If one or more doors do not LOCK or UNLOCK, refer to Door Lock Malfunction.

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2 Answers

What causes a malfunction in power locks?


The power door locks are controlled by the BCM -body control module ! The door lock switch is an input to the BCM .
The BCM, upon receipt of a door lock switch lock or unlock signal, will switch the appropriate door lock actuator control circuits to battery positive voltage. The opposing side of the door lock actuators are connected to ground internally within the BCM through the other door lock actuator control circuit and the doors will lock or unlock appropriately.
First thing to do would be check power an ground circuits at the BCM ! Do you have any other systems not working -power windows etc...
The DR/LCK fuse supplies battery positive voltage to the I/P fuse block for the door lock system. The body control module (BCM) supplies and monitors a reference voltage to the door lock switch through the door lock switch lock/unlock signal circuit. The door lock switch also receives a constant ground source. If a door lock switch is placed in the lock position or unlock position, the reference voltage is taken directly to ground and the BCM detects the voltage drop on the signal circuit.
Should have BCM checked for stored DTC'S - diagnostic trouble codes !
Ignition ON, observe the scan tool Driver Door Lock Sw, Psgr Door Lock Sw, Driver Door Unlock Sw and Psgr Door Unlock Sw parameters while using the driver and passenger door lock switches. The parameters should change between Active and Inactive.
?‡'
If the values does not change between the commanded states, refer to Door Lock Switch Malfunction.

Command the driver door and passenger door lock actuators to LOCK and UNLOCK with the scan tool, the doors should LOCK and UNLOCK when changing between commanded states.
?‡'
If a door lock actuator does not perform the LOCK and UNLOCK functions, refer to Door Lock Malfunction


DTC B3130 00: All Door Unlock Circuit

DTC B3135 00: All Door Lock Circuit

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1 Answer

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