Why liftgate acuator clicking when lift gate is open

Door ajar switch possibly . The lift gate not working is a different matter . Could be any number of thing's .
Power Liftgate System Components
• Liftgate motor assembly
• Liftgate latch
• Liftgate module (LGM)
• Liftgate side upper sensor - left
• Liftgate side upper sensor - right
• Liftgate handle switch
• Liftgate close switch
• GMLAN serial data link
• PWR LIFT GATE 30 amp fuse
• PLG 10 amp mini-fuse

Your best bet take it to a qualified repair shop that has the diagnostic tool that can communicate with the lift gate control module , too check for DTC'S - diagnostic trouble code's .
Liftgate Module
The liftgate module controls the liftgate motor, liftgate clutch, and liftgate latch based on various inputs. The liftgate module also performs diagnostics on these inputs and outputs and will disable liftgate functionality and set DTCs should a fault be detected. The liftgate module is secured to the motor assembly at the left rear of the vehicle. The module requires a liftgate position learn procedure be performed when replacing. This allows the module to learn the full open and full closed positions of the liftgate.

DTC B153A 00: Liftgate Latch Switch Signal Circuit
DTC B153A 08: Liftgate Latch Switch Signal Circuit Signal Invalid
DTC B153B 02: Liftgate Open Switch Signal Circuit Short to Ground
DTC B153B 05: Liftgate Open Switch Signal Circuit Open
DTC B153E 02: Liftgate Position Sensor Signal Circuit Short to Ground
DTC B153E 05: Liftgate Position Sensor Signal Circuit Short to Battery or Open
DTC B153E 08: Liftgate Position Sensor Signal Circuit Signal Invalid

This is not a job for a diy'er or vehicle owner .

How do you know it need's a switch ?
Rear Hatch/Gate Description and Operation
The lift gate can be opened by operating the switch on the instrument panel. Battery voltage is supplied to the lift gate actuator through the body control module (BCM). The BCM will pulse the lift gate actuator when a release input is received through the key fob, or the instrument panel switch. Did you test voltages ? Check for BCM DTC'S - diagnostic trouble codes ?
Circuit/System Description
The lift gate switch is an input to the body control module (BCM). The BCM supplies battery voltage to the signal circuit and when the lift gate switch is activated the signal circuit voltage goes low. The BCM controls the lift gate release actuator assembly through the LIFTGATE relay. When the lift gate switch signal is activated, the BCM enables the LIFTGATE relay by applying battery voltage to the lift gate relay circuit and the relay is energized when the BCM grounds the LIFTGATE relay control circuit. When the relay is energized battery voltage is supplied to the lift gate release actuator assembly through the lift gate release actuator control circuit.

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

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

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A faulty lift gate lock relay

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

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

?€¢
A faulty BCM

Open the liftgate. Remove the liftgate applique. Refer to Liftgate Applique Replacement in Body Rear End. Remove the back up lamp socket (1) from the liftgate applique by turning the socket (1) counterclockwise. Remove the back up lamp bulb from the socket.
Lift gate Applique Replacement
Remove the lift gate trim panel. Refer to Lift gate Trim Panel Replacement .
1
Lift gate Applique Nuts (Qty: 5)
Tip
Disconnect the electrical connector.
Tighten
10 N?·m (89 lb in)
2
Lift gate Applique

Is the arms bent

dodge caravan stuck liftgate or hard to open DIY fix - YouTube

? 3:21
https://www.youtube.com/watch?v=0QqnMw5ZXTk
Nov 13, 2011 - Uploaded by banshee8989
Lift gate support strut replacment on dodge caravan. ... Chrysler Dodge Stuck or Hard to Open Liftgate DIY replacement - Duration: 6:46. by Ilm ... 2006 Dodge Grand Caravan easy inner ball joint replacement - Duration: 12:52.

Rear Lift Gate Support Attaching Bolts May Break : Dodge ...

repairpal.com > Problems > Dodge > Grand Caravan

Rear Lift Gate Does Not Stay Up on Dodge Grand Caravan. The rear lift gate ...support bolts have broken off I use apiece of pipe to hold the gate open. Upvote.

Where is the gate sensor for a 2008 Dodge Caravan? ' Yahoo Answers

https://answers.yahoo.com/question/index?qid...

Jul 30, 2012 - The "gate" light stays on on my dash and the over head lights stay on ... you roll the interior dimmer all the way down) in my 2008 Dodge Caravan. ... Clicking noise in 2008 Dodge Grand Caravan? ... Are the 2010s any better?

Hi Gloria, I'm glad to help!

Gloria, the most likely cause for no alarm when the liftgate is opened is usually because the controller does not see the liftgate open. 2 things can cause this. (1) The alarm switch on the liftgate could be bad. (2) The wiring going to the switch could be broken somewhere in the wiring. On the Jeeps its usually broken where the wiring is bending all the time between the liftgate and the body of the vehicle. If you pull the rubber insulator out you can then check the wiring. If the wiring is good then the next step would be to try an alarm switch for the liftgate. Hope this helps and have an awesome day Gloria.

ON MOST LIFTGATES AFTER A WHILE TEND TO WEAR OUT THE PLASTIC FASTENER THAT HOLDS METAL ARMS OF THE LATCH,AND FELL OF..ON BACK OF LIFT GATE THERE SHOULD BE A DOOR HEL BY SCREWS TAKE THEM OFF TO SEE IF METAL ARMS ARE CONEECTED TO LIFT GATE HANDLE..LOOK AT LATCH YOU OPEN LIFT GATE WITH SCREWS SOMTIMES THERE TOO RE MOVE TO CHECK METAL ARMS,,,MOST PARTS STORES CARRY THESE FASTENERS FOR A COUPLE OF BUCKS..

It can be faulty switch or its issue with lift gate latch.Its got stuck up hard or cracked inside.It has to be inspected.-----------
There are few help links with proper solutions for these problem.I suggest you to refer the links.
Click the link below:----
2007 Mercury Mountaineer: Liftgate will not Unlock or Open? http://whoisbyme.blogspot.in/2012/06/2007-mercury-mountaineer-liftgate-will.html
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Adjust Hydraulic Lifters? http://schematicsdiagram.blogspot.in/2012/04/adjust-hydraulic-lifters.html
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How to open rear lift gate? http://repairhelpcenter.blogspot.com/2011/12/how-to-open-rear-lift-gate.html

--------- Power Liftgate Shuts Down http://whoisbyme.blogspot.in/2012/07/power-liftgate-shuts-down.html
------------ Power Lift Gate Will Not Remain Open http://whoisbyme.blogspot.in/2012/07/power-lift-gate-will-not-remain-open.html
----------- Power Lift-gate will not Operate http://whoisbyme.blogspot.in/2012/07/power-lift-gate-will-not-operate.html
------------- Liftgate will Not Stay Up Open? http://whoisbyme.blogspot.in/2012/07/liftgate-will-not-stay-up-open.html

---------------- Rear Door will not open http://whoisbyme.blogspot.in/2012/07/rear-door-will-not-open.html
------------ 2000 Toyota Corolla: Rear Door wont open from outside or inside? http://whatisbyme.blogspot.in/2012/05/2000-toyota-corolla-rear-door-wont-open.html

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These details will help.
Thanks.

how to i open a stuck lift garte on a ford winstar 2000 lock broken too