Question about 2005 Dodge Grand Caravan

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Remote door locks won't work

The door locks will neither lock or unlock from the remote. The rear cargo door does respond to the remote signal and will lock and unlock. Doors will not automatically lock when vehicle reaches 18-20 mph. Rear cargo door will lock at that speed. I've checked owners manual for fuse location and find no such fuse for the door locks in my manual.

Can anyone tell me how to fix the problem or how to find the fuse for the remote doors?

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  • sassymom56 Mar 07, 2009

    In response, no I cannot lock the doors using the door lock switch.

    I don't remember if I said my vehicle is a 2005 Dodge Grand Caravan.

    Sassymom56@aol.com

  • faadca Apr 06, 2009

    Same thing happen to my 2005 Dodge Carvan,Neither out or inside the van locking or unlocking,and not from inside switches.Only Rear Cargo Door response on Key Locking/Unlocking.

  • LOU BELLANCA May 11, 2010

    Can you lock or unlock the doors using the lock switch inside the vehicle?

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  • Master
  • 1,392 Answers

There is a flash for the body control module for this problem. You need to go to the dealership to get it performed though.

Posted on Mar 08, 2009

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Why does my 2004 Chevy Silverado lock and unlock while in drive? When turned off and no keys in ignition the drivers door will unlock on its own a short time later.


Gremlins ! HA HA HA sorry ! First off a little bit on how they work an what all is involved in making them work ! There are a few control modules in the mix , switches ,relays etc...
Door Lock System Components
The power door lock system consists of the following components:
?€¢
The driver door module (DDM)

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The passenger door module (PDM)

?€¢
The body control module (BCM)

?€¢
The driver information center (DIC)

?€¢
The rear door lock switch

?€¢
The door lock relay

?€¢
The door unlock relay

?€¢
The liftgate lock relay--utility vehicles with liftgate only

?€¢
The reversible door lock actuators in each of the doors and liftgate

?€¢
LOCKS 20A fuse (rear lock/unlock relay supply voltage)

?€¢
ECC 10A fuse (liftgate lock relay supply voltage)

Door Lock System Controls
The power door lock system can be controlled by any of the following:
?€¢
A power door lock or unlock switch activation

?€¢
A keyless entry transmission

?€¢
An automatic door lock function

?€¢
A delay lock function

?€¢
Door lock cylinder switch activation

?€¢
Lockout Prevention

?€¢
An airbag deployment

The front power door lock switches are integral components of the driver door module (DDM) and passenger door module (PDM). The switches are two position normally open rocker switches. When placed in either the lock or unlock positions, the switches provide a direct input to the DDM or PDM. The DDM or PDM monitors these inputs and sends a Class 2 message indicating a change in the switch's respective position. Modules which activate the power door lock motors receive the Class 2 message and activate the motor in the appropriate direction to lock or unlock the vehicle's doors and liftgate. The rear door lock switch provides a lock and unlock signal to the body control module (BCM). The BCM upon receipt of a lock or unlock signal will control the rear door lock relays and also send a Class 2 message to the DDM and PDM to perform the appropriate function.
The modules which activate the power lock motors are:
?€¢
The DDM (driver door lock actuator).

?€¢
The PDM (passenger front door lock actuator).

?€¢
The BCM (both rear door lock actuators and cargo door/liftgate).
The DDM and PDM are directly connected to the respective door lock actuator through the door lock motor lock and unlock circuits. Once a door lock or unlock request has been received, the module will supply battery voltage to one side of the actuator and ground the other causing the doors to lock or unlock.
The rear passenger and cargo doors differ slightly in that they use lock and unlock relays. The relays supply and coil sides receive a constant voltage through the battery voltage supply circuit. The normally closed contacts are connected to ground and the control side is connected to the BCM. Once a door lock or unlock request has been received by the BCM, the BCM will ground the control side of the appropriate relay. This energizes the relay and allows voltage to be applied to either the door lock motor lock or unlock circuits. since the other side of the door lock actuator is connected to the normally closed contacts of the opposing relay to ground, the doors lock or unlock.
The first place to start is have a factory or equivalent scan tool hooked up , one that can read BCM DTC'S - diagnostic trouble codes ! This could lead to a fix faster ! Watch these three videos !
Door Locks Go Crazy 1

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My keyless entry for my 2008 Volvo s 40 won't work. I've tried replacing the battery but it still doesn't work. Anything I may can do before spending money on a new key.?


How are you trying to open the door , button on key fob ? With this system you can pull up on the drivers handle an it activates Antennas in the external side door handles (C30/C70 front doors, S40/V50 rear doors)
  • Antennas in the passenger compartment and cargo compartment
  • An antenna in the rear bumper
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  • The remote keyless entry (RKE) receiver receives a signal from the key
  • The switch in the clutch pedal (manual transmissions) or a signal from the brake pedal switch via the central electronic module (CEM) (automatic transmissions)
  • Key-in switch.
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    1 Answer

    2005 Chevrolet Tahoe Power Windows and Power Locks not working.


    The power windows an power locks are controlled by a module , DDM - driver door module . As far as the locks locking when you put the vehicle into reverse an unlocking when you put the vehicle into park , that's how there are suppose to work , automatic lock an unlock feature . When you put the vehicle into any gear from park the locks should lock . Did she hit window lockout function ?

    The power door lock system consists of the following components:
    • The driver door module (DDM)
    • The passenger door module (PDM)
    • The body control module (BCM)
    • The driver information center (DIC)
    • The rear door lock switch
    • The door lock relay
    • The door unlock relay
    • The liftgate lock relay--utility vehicles with liftgate only
    • The reversible door lock actuators in each of the doors and liftgate
    • LOCKS 20A fuse (rear lock/unlock relay supply voltage)
    • ECC 10A fuse (liftgate lock relay supply voltage .

    Programmable Automatic Door Locks
    The automatic door lock feature can be programmed to control the door lock system. The automatic door lock feature is factory programmed to have all doors lock and unlock. For detailed instructions on programming the automatic door locks, refer to Vehicle Personalization in Personalization.
    When the automatic door lock feature is programmed to control the door lock system, the driver door module (DDM), passenger door module (PDM) and body control module (BCM) will lock the vehicle doors if the following inputs are true:
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    • All door jamb switch inputs are inactive.
    • Cargo door or liftgate/liftglass ajar inputs are inactive.
    • Transmission is shifted out of park.
    This automatic door lock function will only occur once per ignition cycle unless, a door jamb switch input changes state to active and back to inactive. Then the DDM, PDM and BCM will lock all doors again.
    Once the automatic door lock feature has locked the doors, the BCM will then unlock all the doors when the transmission is shifted into park.
    Driver, Passenger and Cargo Door Lock System Operation
    The front power door lock switches are integral components of the driver door module (DDM) and passenger door module (PDM). The switches are two position normally open rocker switches. When placed in either the lock or unlock positions, the switches provide a direct input to the DDM or PDM. The DDM or PDM monitors these inputs and sends a Class 2 message indicating a change in the switch's respective position. Modules which activate the power door lock motors receive the Class 2 message and activate the motor in the appropriate direction to lock or unlock the vehicle's doors and liftgate. The rear door lock switch provides a lock and unlock signal to the body control module (BCM). The BCM upon receipt of a lock or unlock signal will control the rear door lock relays and also send a Class 2 message to the DDM and PDM to perform the appropriate function.
    The modules which activate the power lock motors are:
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    • The PDM (passenger front door lock actuator).
    • The BCM (both rear door lock actuators and cargo door/liftgate).
    The DDM and PDM are directly connected to the respective door lock actuator through the door lock motor lock and unlock circuits. Once a door lock or unlock request has been received, the module will supply battery voltage to one side of the actuator and ground the other causing the doors to lock or unlock.
    The rear passenger and cargo doors differ slightly in that they use lock and unlock relays. The relays supply and coil sides receive a constant voltage through the battery voltage supply circuit. The normally closed contacts are connected to ground and the control side is connected to the BCM. Once a door lock or unlock request has been received by the BCM, the BCM will ground the control side of the appropriate relay. This energizes the relay and allows voltage to be applied to either the door lock motor lock or unlock circuits. since the other side of the door lock actuator is connected to the normally closed contacts of the opposing relay to ground, the doors lock or unlock.

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    Doors won't lock, thinks key in ignition


    Troubleshooting is required to inspect few parts.It can be issue with ignition switch.Its not getting off.Or issue with sensor or wiring.Or its faulty lock itself.Click the link below and follow the troubleshooting:----Driver Door will not lock or unlock with Key or Remote? http://whatisbyme.blogspot.in/2012/05/1998-toyota-landcruiser-driver-door.html
    ----------
    Driver side door will not lock or unlock with Remote? http://technoanswers.blogspot.in/2012/04/2009-toyota-tundra-driver-side-door.html
    ---------
    Central locking not working ? http://schematicsdiagram.blogspot.in/2012/03/this-is-how-system-operates.html

    --------------
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    ---------

    Repairing car Door lock Actuator?
    http://howtobyme.blogspot.com/2011/11/repairing-car-door-lock-actuator.html

    --------

    How to Access car door panel?
    http://howtobyme.blogspot.com/2011/11/how-to-access-car-door-panel.html

    -----

    Vehicle door panel components?
    http://howtobyme.blogspot.com/2011/11/vehicle-door-panel-components.html

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    I have power to the door lock switches on the drivers door but the locks do not work nor does the back hatch or the switch at the back hatch that controls all the locks in the vehicle. Do the locks g


    Power Door Locks Circuit Description
    The power door lock system incorporates door lock switches on both front doors and on the RH D-pillar, door lock motors in all passenger doors and in the RR cargo door, a door lock relay and a door lock control module.
    Power for the door lock switches and the door lock control module is supplied from the CIG LTR fuse 13 through CKT 640 (ORN). Power for the door lock relay is supplied from the PWR ACCY circuit breaker through CKT 540 (ORN). Ground for the door lock relay is supplied from G202 through CKT 150 (BLK) and ground for the door lock control module is supplied from G400 through CKT 150 (BLK).
    The door lock motors are reversible and both sides are connected to the normally closed contacts of the door lock relay. Those contacts of the relay are connected to G202. When any of the door lock switches are placed in the lock position, voltage is supplied through CKT 195 (LT BLU) to the relay lock coil. Since the other side of the lock coil is connected to ground, the coil is energized and it pulls the lock contacts closed. Voltage is then supplied through CKT 295 (GRY) to all the door lock motors and the doors lock. The unlock function operates in much the same manner except that when any of the switches are placed in the unlock position, voltage is supplied through CKT 194 (WHT) to the unlock coil of the relay and CKT 294 (TAN) supplies voltage to the apposite side of the door lock motor and the doors unlock.
    Door Lock Control Module Description
    The door lock control module is used on vehicles equipped with cargo doors. The purpose of the module is to lock the cargo doors after a lock cycle has been commanded from any of the door lock switches with the cargo doors open. When the RH cargo door is open, the module receives a ground signal from the closed contacts of the rear door jamb switch on CKT 1897 (ORN/BLK) to G400. When a lock command is received, the module retains this input until it receives an open input from the rear door jamb switch. Then the module sends a lock command through CKT 194 (WHT) to the door lock relay and the doors lock.
    Rear Cargo Doors Description
    The power door lock motor will not operate unless the rear cargo doors are fully closed. The power door lock motor is in the right cargo door. The contactors are on the rear cargo door opening on the body and on the right cargo door.

    May 23, 2017 | 1997 GMC Yukon

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    Isuzu trooper 2001 battery replaced and key fob does not work with door locks but responds with 5 beeps when lock button is pushed. What might be the problem here. Thanks RJ


    possibly it still thinks a door is open check out rear cargo door switch this is usually the culprit because its seperate from the rest of the doors. turn on rear cargo light to doors ,make sure it works then shut rear cargo door and see if light is still on. if light is still on theres your problem.
    look at switch usually they get dammaged/distorted over time.

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    I have a 98 GMC JIMMY. Remotes and Dome Lights stopped working. Car would start then immediately die. Took it to the dealer and they stated it was the Body Control Modual (BMC). Picked up the vehicle...


    Keyless Entry System Circuit Description
    The Power Door Locks/Remote Keyless Entry control system provides several functions. The driver operates the vehicle door locks and rear window release from outside the vehicle using a hand-held radio transmitter. The transmitter sends coded signals to the remote control door lock receiver. The remote control door lock receiver detects and decodes the signal from the transmitter. The remote control door lock receiver issues signals to the body control module (BCM) through a serial data link. The BCM actuates relays to lock and unlock the doors and liftgate. The BCM can also release the liftglass. The power door lock switches provide manual control of the door locks.


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    Important: Different keyless entry systems are used on General Motors vehicles. The parts are not interchangeable even though the parts may appear to be similar. Observe the back of the transmitter in order to properly identify the system. On 1998 S/T pickups and utilities, use a transmitter identified with GM/UTA preceding the part number.
    With the driver door closed, hold down the power unlock button on the door panel.
    Turn the ignition switch to the ON position.
    Turn the ignition switch to the OFF position.
    Turn the ignition switch to the ON position.
    Turn the ignition switch to the OFF position.
    Release the power unlock button on the door panel.
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    6.2. Unlocking the doors
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    7.2. Unlocking the doors.
    Repeat step 7 for each additional transmitter.
    Turn the ignition switch to the ON position in order to exit the transmitter programming mode.

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      1. Remove the ground applied to the reprogrammed connector.
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