Question about 2000 Dodge Caravan

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Can unlock but can't lock doors, there is not power on the unlock position. It started with a short somewhere with the door locks, replaced fuse twice, 3rd time they would unlock but nothing happens when I try to lock the doors, if i lock the doors manually I can unlock thrm with no problem. Thare is no power on the lock position , I already check that. 2000 dodge ram van 1500.

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  • wtanddm Sep 12, 2009

    I already check wires and switches, there is power in and out of the switches, the bad conection is between the switch and relay, the fuse i replaced is for door locks and central timer module, can someone tell me where is this part located at?

    It seems that a cable is broken/has a short either in between the switch and ctm or between ctm and door lock.(lock position)

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2 Answers

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Inspect.and possibly replace lock interior switch

Posted on Sep 12, 2009

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Clean and lubricate all moving arts, and replace switch

Posted on Sep 12, 2009

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Where are the fuses for the power dock locks on a 2006 montecarlo06ss


DR/LCK fuse 25 amp . located in the I/P block
Fuse Block - I/P
In the right front kick panel

Power Door Locks System Components
The power lock system consists of the following components:
• Body control module (BCM)
• Driver door lock cylinder switch
• Front passenger door lock cylinder switch
• Driver door lock switch
• Front passenger door lock switch
• Door lock actuators in each of the doors
• DR LK Fuse 20-amp
Door Lock System Controls
The Power Door Lock System is controlled by the body control module (BCM) and can be activated by any one of the following:
• A door lock switch lock or unlock actuation
• A door lock cylinder switch unlock actuation
• A keyless entry transmitter actuation
• An automatic door lock actuation (Personalization function)
• An automatic door unlock actuation (Personalization function)
Door Lock Operation
When the body control module (BCM) detects a transition of either of the door lock switches to the lock position, it switches the door lock actuator lock control circuit to voltage. Since the lock actuator unlock control circuits are at ground potential within the BCM, the door lock actuator motors transition to the lock position.
Driver Door Unlock Operation
When the body control module (BCM) detects a transition of either of the door lock switches to the unlock position, it switches the driver door lock actuator unlock control circuit to voltage. Since the door lock actuator lock control circuit is at ground potential within the BCM, the left front (LF) door lock actuator motor transitions to the Unlock position.
The driver door lock actuator unlock control circuit is a dedicated control circuit used only for the driver door lock actuator motor. This is done so that the driver door may be unlocked by itself using a keyless entry transmitter or an automatic door unlock function (if programmed).
Passenger Door Unlock Operation
When the body control module (BCM) detects a transition of either of the door lock switches to the unlock position, it switches the door lock actuator unlock control circuits to voltage. Since the door lock actuator lock control circuit is at ground potential within the BCM, the passenger door lock actuator motors transition to the unlock position.
The door lock actuator unlock control circuits are dedicated control circuits used only for the passenger door lock actuator motors. This is done so that the driver door may be unlocked separate from the passenger doors using a keyless entry transmitter or an automatic door unlock function (if programmed).

Mar 23, 2017 | 2006 Chevrolet Monte Carlo

1 Answer

2005 Buick Rendezvous you can hear the relay clicking but the door locks will not open and close


Check for broke wires inside the boot from body to driver door , this is a common problem . If you don't find broke wire's , pull the door panel to get at driver door switch . Check for voltage an ground circuit .
Rendezvous Door Lock System Components
The power door lock system consists of the following components:
?€¢
Body control module (BCM)


?€¢
Driver door lock switch


?€¢
Front passenger door lock switch


?€¢
Door lock actuators in each of the doors


?€¢
Door lock system fuse into the BCM (BCM D 25A fuse)


Door Lock Operation
When the BCM detects a transition of either of the door lock switches to the LOCK position, it switches the door lock actuator lock control circuit to voltage. Since the lock actuator unlock control circuits are at ground potential within the BCM, the door lock actuator motors transition to the Lock position.
Driver Door Unlock Operation
When the BCM detects a transition of either of the door lock switches to the UNLOCK position, it switches the driver door lock actuator unlock control circuit to voltage. Since the door lock actuator lock control circuit is at ground potential within the BCM, the LF door lock actuator motor transitions to the Unlock position.
The driver door lock actuator unlock control circuit is a dedicated control circuit used only for the driver door lock actuator motor. This is done so that the driver door may be unlocked by itself using a keyless entry transmitter or an automatic door unlock function (if programmed).
Passenger Door Unlock Operation
When the BCM detects a transition of either of the door lock switches to the UNLOCK position, it switches the door lock actuator unlock control circuits to voltage. Since the door lock actuator lock control circuit is at ground potential within the BCM, the passenger door lock actuator motors transition to the Unlock position.
The door lock actuator unlock control circuits are dedicated control circuits used only for the passenger door lock actuator motors. This is done so that the driver door may be unlocked seperate from the passenger doors using a keyless entry transmitter or an automatic door unlock function (if programmed). This video on testing computer controlled door locks on a Subaru , doesn't matter . test yours same way > The BCM controls your door locks .
Are all of the power door locks inoperative from both door lock switches?

Oct 12, 2016 | 2005 Buick Rendezvous

1 Answer

2002 yukon xl .My locks & alarm system dont work ! What do i do ? I checked fuses also


Power Door Locks Inoperative - All Doors and Switches ?
The MIR/LOCK fuse supplies battery positive voltage for the power mirrors, power door lock switches and the memory seat switch (if equipped). If the MIR/LOCK fuse is open, all systems on the fuse would be inoperative. The fault could be a short to ground in the battery positive voltage circuit, however, a short to ground in the power mirror motor control or the memory seat control circuits could also be the cause if the fuse opens after any of the switches are activated. If a short to ground exists in either the door lock or unlock relay control circuits, a DTC (B3137 or B3147) would set when the BCM commands a lock or unlock function.
Did you perform the Power Door System Diagnostic System Check?
Go to Step 2
Go to Diagnostic System Check - Door Systems

2

Actuate all door lock switches to both the lock and unlock positions.
Did all the doors lock and unlock?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3

3

Did any of the doors lock and unlock from any of the switches?
Go to Power Door Locks Inoperative - One Door or Switch
Go to Step 4

4

  1. Install a scan tool.
  2. With the scan tool, command the doors to lock and unlock.
Did the doors lock and unlock?
Go to Step 12
Go to Step 5

5

  1. Remove the door lock relay.
  2. With a test lamp connected to a good ground, test the battery positive voltage circuits for the door lock relay at the fuse block.
Did the test lamp illuminate?
Go to Step 6
Go to Step 13
The Content Theft Deterrent function provides the theft deterrent by sounding the horn and flashing the headlamps and the park lamps when there is an unauthorized vehicle entry or there is tampering detected.
SECURITY Telltale The SECURITY telltale on the instrument cluster is controlled by both the VTD system and the CTD system.
?€¢
The VTD system commands the instrument cluster to control the telltale only when the ignition switch is ON. The VTD system uses the telltale as a malfunction indicator. If a DTC is present in the VTD system when the ignition is ON, the telltale will be illuminated.


?€¢
The CTD system commands the instrument cluster to control the telltale only when the ignition switch is OFF. The CTD system uses the telltale to identify system status.


-
Telltale FLASHING -- The system is in standby mode. The system is not ready to arm (a door is open).


-
Telltale ON STEADY -- The system is in delay mode. The system is ready to arm and is executing a time delay of 15 seconds before turning the lamp OFF and transitioning to armed mode.


-
Telltale OFF -- The system may or may not be armed.
Body Control Module (BCM) The body control module (BCM) monitors several inputs in order to arm and disarm the CTD system. The BCM controls the alarm function outputs. When the BCM detects an unauthorized entry (any door opened), the BCM applies ground to the horn, the park lamp and the headlamp relays. The BCM will send messages to the security telltale in the instrument cluster through the Class 2 serial data link. The BCM has the following 8 basic modes for operating the CTD system. The more detailed descriptions are below.
?€¢
Off state


?€¢
Idle state


?€¢
Disarmed state


?€¢
Ready-to-arm state


?€¢
Arm initiated state


?€¢
Arm delay state


?€¢
Armed state


?€¢
Alarm state

The BCM has the following 6 discrete inputs in order to monitor the CTD system:
?€¢
Ignition 1


?€¢
Driver door latch (door jamb) switch


?€¢
Passenger door latch (door jamb) switch


?€¢
Door lock relay


?€¢
Door key switch


?€¢
Passenger door unlock relay

The BCM applies ground once per second for approximately 2 minutes, or until a valid input to disarm the system is received by the BCM.
Check the door lock relay !

Jun 16, 2016 | Cars & Trucks

1 Answer

Why does the fuse immediately blow on my power door locks? how to fix this?


You have a short somewhere in the system. Maybe one of the lock actuators or a switch. To test disconnect all locks and switch then replace fuse if don't blow start with driver door and reconnect lock check fuse see if it blew if not reconnect switch active lock check fuse see if ok. Continue with each door separate using same steps until fuse no good you will have found short. Replace shorted part.

Apr 30, 2016 | Cars & Trucks

1 Answer

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)

?€¢
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

Sep 16, 2015 | Cars & Trucks

1 Answer

2008 Chevy Impala LTZ: car wont lock or unlock with the power lock/unlock buttons on the remote or car door. It makes a clicking sound though when I attempt to. Is this a blown fuse? Or something else


Where do you here the clicking sound ? in the door , behind instrument panel ? I don't think a blown fuse would do this , possibly a relay ! do you know what a relay is ? This is Chevy factory service information !
Door Lock Operation
When the body control module (BCM) detects a transition of either of the door lock switches to the lock position, it switches the door lock actuator lock control circuit to voltage. Since the lock actuator unlock control circuits are at ground potential within the BCM, the door lock actuator motors transition to the lock position.
There are three pcb relays integrated into the instrument panel fuse box ( non replaceable ) door unlock pcb relay drivers door -door unlock pcb relay an door lock pcb relay ! The BCM controls these relays ! Do you know what a BCM is ?
Circuit/System Description
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.
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.
With out have a factory GM tech 2 scan tool ,It would be best if you took this to a Chevy dealer . The first part of diagnosing this problem is to hook up a scan tool !

Wiht
There
How to test computer controlled door locks

Aug 25, 2015 | Cars & Trucks

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

Aug 09, 2015 | 2010 Chevrolet Impala

2 Answers

No electric power to left door Fuse and relay are good


Check the wire lume that runs from the body to the door inside a rubber bellow. the wires can break from constant moving and I'm not sure what vehicle you have, but this is a defect for a few vehicles out there the wire can be to short in some cases from cost saving manufacturing. It may be necessary to remove the door panel and remove the harness through the wire opening to be able to move the boot far enough to access the broken wire or even just to check it in some cases.
How I like to repair it, is to put a new wire through the entire pivot point and join it inside the door and body where the wire does not move constantly.

Hope this helps

Mar 04, 2015 | 2007 Saturn ION-2 Quad Coupe

1 Answer

Power door locks won't work from doors switches


I had same problem on my 99' Suburban and found it was that the accessory fuse (25A,) had blown due to a shorted accessory. I replaced the fuse after determining the short and door locks started working once again with door switches.

Jun 24, 2009 | 2004 Chevrolet Venture Passanger

2 Answers

Keep blowing out auto door lock fuse


You have a short Somewhere. Check inside the Door where the Harness goes into the Doors. It is the Black Flex duct that looks like a Vacuum hose.

Jan 19, 2009 | 2004 Chevrolet Blazer

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