2011 jeep liberty door Ajar fuse where location?

Check the door lock position and wiring. Look for a closed signal that is probably missing.

https://www.youtube.com/watch?v=uiF-jRgB7bM

No , Why ? The lift gate door ajar light is controlled by the lift gate module or BCM . These modules have their own power supply . Now what problem are you having ? no ajar light showing on the instrument cluster when lift gate is open ?

You replaced lift gate ,with a used one ? Did you replace door ajar switch with new one ? An what's this ovedrive ? Do you mean overdrive light ? If so the door ajar has nothing to do with that . When that light comes on you have a transmission problem .

[SOLVED] False Gate Ajar/Rear Access Open warnings: follow up post ...

forums.trailvoy.com > ... > 02-09 General Tech Q&A > General

Dec 28, 2009 - 4 posts - ‎2 authors
[SOLVED] False Gate Ajar/Rear Access Open warnings: follow up post General. ...2002 Chevy TrailBlazer LTZ ... In cold weather, I have a constant "gate ajar" warninguntil the ... Should I try to unhook/rehook the connections to the BCM? ... You might confirm it by starting the vehicle cold, see that you have ... Annoying tailgate ajar won't quit going off on 04 gmc ...
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Rear access door ajar - false signal - Fixya

www.fixya.com/cars/t22610885-rear_access_door_ajar_false_signal

Replace the gate latch. Open the gate, remove the top panel first, it pops off. Remove the bottom, 2 to 4 screws to remove, then it pops off. This gives you access to remove the latch.

very old post... choices?? i will try to help others fix ALARMS.
Jeep WK. 2005 to 2010
what id do? , is never set it. or defeat it. (ask)( the oper,guide tells this)

but if it MUST work than it must be fixed.
the dealer would use a scan tool , see no errors and replace something exensive, then it fails again. the endless story of alarms.
in your case he'd install the TSB fix first.
He'd use a DRBIII scan tool to find the offending input.
The BCM (body puter ) gets the sensor inputs belowL

The BCM receives the ajar switch signals on the following circuits.

• Circuit G75 provides left front door ajar switch signal
• Circuit G74 provides right front door ajar switch signal
• Circuit G77 provides left rear door ajar switch signal
• Circuit G76 provides right rear door ajar switch signal
• Circuit G78 provides liftgate ajar and liftglass ajar signals.

the hardest problems are always intermittants.
Intermittent alarms and stalling engines, tops list.
finding it? , with out sleeping in the car is a big problem.

also there is TSB on this.
Swing gate open alarm.
http://www.jeepforum.com/forum/f67/2008-wk-liftgate-open-message-746268/#post13865598

the hard part, is finding out which inputs is (was) failing.
in my car i can find it with a scan tool .
newer cars store the failed input in the PCM memory. as a DTC.

In my shop I have a CAN-BUSS monitoring tool that allows me
to see live AJAR messages and logs them to the laptop, HDD.
for later analysis. (ok the lift gate failed at 3am, bingo)
my 2008 logs, DTCS like this.
B1820-HOOD AJAR INPUT CIRCUIT HIGH (and all others)
i have a scan tool that can see that , called a innova 3160
a $200 tool,
I have 2 ways to find intermittent in my newer jeep

2006; WK?
FSM quotes with comments.
VTSS VERIFICATION TEST - 1A Diagnostic Test
1. Perform VTSS Verification Test

• Open the driver door and roll down the window.
• Remove the ignition key (but keep in hand).
• Lock the doors with RKE transmitter or power door lock switch.
• Ensure all doors, tailgate, and tailgate flip-up glass are closed.
• If the VTSS Indicator Lamp flashes rapidly and after approximately 16 seconds changes to a slower flash, the system is operational. However, If the indicator fails to flash as described, there is a problem with the system.
• comment: gee, attempt to rattle all doors, and see if VTSS sees a failure. all doors, lift gate and hood, (if car has hood switch)

the FSM shows the B1xx and B2xxx codes for alarms.
only a scan tool can do that. mine can,
you can also rent cheap CAN-BUS scan tools, from most good
autostores.
that should cover most alarming issues.
but here is one better for older jeeps.
see matrix table for coverage by body type.
http://autorepair.about.com/library/a/1h/bl903h.htm

try rolling down a window or leaving a door open, shut liftgate hard. see if it still shows liftgate ajar. on my explorer the seals in door and windows shut so tightly that it was almost impossible to get the gate closed completely with doors closed and windows up.

if this doesn't help then you might need a new switch on it.

replace the lift gate/door ajar switches, they are located inside the tail gate on the left and right latch assemblies.

Check the rear lift gate switch. Or it could be that one of the doors or the rear lift gate is out of adjustment and not closing tightly. Try closing all doors and lift gate then from the outside push in on the doors and see if they go in. If it is the doors , when you push on the one that is causing the problem the door ajar chime will stop .