Question about 2005 Dodge Grand Caravan

2 Answers

Doors will not lock.

All doors including rear gate will not lock with the switch on either door or with the remote. The relay that makes the parking lights blink works and the lights blink, but the doors will not lock.

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  • gti205 Jan 02, 2009

    I have the same problem but the rear door does lock and unlock.

  • Anonymous Jan 21, 2009

    doors will not with remote or switch

  • rbk15122 Jan 22, 2009

    Same as hay3751, but won't unlock them either. Disconnecting and reconnecting battery sometimes restores access, but not for long (and, we understand, is "not recommended" because it messes up the computer).

    A bad wire somewhere is suspected, but we have not been able to identify it.


  • cv4579 Jan 26, 2009

    Same as git 205 but the drivers power window works andthe passenger power does NOT work.

  • Mike Butler
    Mike Butler May 11, 2010

    Have you checked manual for fuse location & checked it?

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The only way to have a life long fix is to take it to the dealer and have them reset the computer. The fix I used on my 2005 Grand Caavan is remove the IOD fuse for 1 min and repalce it. It is located in the fuse box next to the battery. Hope this helps

Posted on Mar 01, 2009

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Chances are the light flashing is the alarm system not the door relay. locate the relay for the doors and replace it. usually located in the fuse panel under the dash.

Robert

Posted on Jan 11, 2009

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1 Answer

1999 blazer Doors lock and unlock even when parked, help


Lock an unlock by them selves ? Door locks are computer controlled ,by the BCM - body control module .
--------------------------------------------------------------------------------
Power Door Locks Circuit Description
The power door lock system includes the following components:
• The door lock actuators
• A door lock relay
• An door unlock relay
• A driver door unlock relay
• The door lock and side window switches
• The body control module (BCM)
• The endgate lock cylinder switch /liftgate lock cylinder switch (utility)
• The keyless entry, if equipped
The door lock and liftgate mechanisms may be controlled by the following switches:
• The door lock and side window switches
• The BCM
• The endgate lock cylinder switch / liftgate lock cylinder switch (utility)
• The keyless entry, if equipped
The following locking functions are included on the vehicle:
• All the doors unlock -- All the doors will unlock, including the endgate/liftgate, when any power door unlock switch is detected. The passenger doors lock directly by pressing the lock switches. The driver door unlocks by the BCM using a driver door unlock relay.
• All the doors lock -- All the doors will lock, including the endgate/liftgate, when any power door lock switch is activated. All the lock actuators will activate directly from the power door lock switch (external to the BCM).
• The end/lift gate lock switch -- All the doors will lock or unlock from the end/lift gate lock switch.
• The lockout prevention -- This function will prevent the doors from automatically locking if the keys have been left in the ignition and the power door lock switch is operated.
The motor is protected by a built-in electronic circuit breaker (ECB). If the motor is overloaded or voltage is applied for an excessive amount of time, the ECB internal resistance increases, essentially creating an open circuit. The resistance returns to normal only after voltage is removed from the circuit, thereby restoring circuit continuity.

You have a bad switch input to the BCM !
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What fuse is it for rear hatch actuator 99envoy


One fuse powers all door lock actuators . The other door locks work ? if so it's not a fues problem .
The following locking functions are included on the vehicle:
• All the doors unlock -- All the doors will unlock, including the endgate/liftgate, when any power door unlock switch is detected. The passenger doors lock directly by pressing the lock switches. The driver door unlocks by the BCM using a driver door unlock relay.
• All the doors lock -- All the doors will lock, including the endgate/liftgate, when any power door lock switch is activated. All the lock actuators will activate directly from the power door lock switch (external to the BCM).
• The end/lift gate lock switch -- All the doors will lock or unlock from the end/lift gate lock switch

You probably have a bad lock actuator

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1 Answer

I have 2005 chevy tahoe my doors all licks but my liftgate door with window stays open use to lock w all my doors? I havent check anytjing yet? I cant lock it.


Here is how it works !
Liftgate Locking Operation
The lift gate will lock any time the vehicle is shifted out of park on vehicles equipped with an automatic transmission and at vehicle speeds exceeding 5 kph with manual transmission. This happens in conjunction with auto door locks if enabled or independently of auto door locks if the feature is disabled. This ensures that the lift gate is locked anytime the vehicle is shifted out of park or when the vehicle is in motion.
The lift gate lock relay supply and coil sides receive a constant voltage through the battery voltage supply circuit and the ECC fuse. The normally closed contact is connected to ground and the control side is connected to the body control module (BCM). A lock function will occur when a door lock switch activation, keyless entry lock transmission, auto door lock function or a lift gate lock function has been received by the BCM. The BCM will then ground the control side of the lift gate lock relay. This energizes the relay and allows voltage to be applied to the lift gate lock actuator lock control circuit. Since the other side of the lift gate lock actuator is connected to the normally closed contacts of the door unlock relay to ground, the lift gate will lock. When an unlock function occurs the BCM will ground the control side of the unlock relay and the rear doors and lift gate will unlock.
The BCM also runs diagnostics on the lift gate lock relay control circuit and will set DTC B3825 as current and also send a Class 2 message to the DIC. The DIC will display REPLACE LIFTGATE FUSE to inform the driver that a fault has been detected in the lift gate lock circuit and that the lift gate is not locked. Faults that will set the DTC and cause the DIC to display the message could be any of the following:
?€¢
An open ECC fuse


?€¢
An open or short to ground in the lift gate lock relay battery positive voltage circuit


?€¢
A faulty lift gate lock relay


?€¢
An open or short to ground in the lift gate lock relay control circuit


?€¢
A short to ground in the lift gate lock actuator lock control circuit


?€¢
A faulty BCM

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