Question about 2000 Jeep Cherokee

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My liftgate is locked when i hit unlock it doesnt do anything the manual said there was a release in the inside panel when i took it offf it was just insullation any other suggestion

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More than likely the rear tailgate accuator is bad. If you took the rear panel off you should be able to move the mechanism by hand.

Posted on Feb 23, 2009

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I have a 2005 GMC Yukon that the rear hatch does not lock. Wouldn't be a problem but no manual key hole to lock it. Must be some kind of lock sensor. Is on the driver door panel or by the hatch?


The rear hatch locking is computer contolled .
The BCM also runs diagnostics on the liftgate 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 liftgate lock circuit and that the liftgate 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 liftgate lock relay battery positive voltage circuit
• A faulty liftgate lock relay
• An open or short to ground in the liftgate lock relay control circuit
• A short to ground in the liftgate lock actuator lock control circuit
• A faulty BCM

The liftgate 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 liftgate lock function has been received by the BCM. The BCM will then ground the control side of the liftgate lock relay. This energizes the relay and allows voltage to be applied to the liftgate lock actuator lock control circuit. Since the other side of the liftgate lock actuator is connected to the normally closed contacts of the door unlock relay to ground, the liftgate will lock. When an unlock function occurs the BCM will ground the control side of the unlock relay and the rear doors and liftgate will unlock.
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)

If i were to guess i would say you mite need a new lock actuator , but i don't guess . You could take the hatch inside panel off an check for B+ voltage for the lock actuation as someone pushes the switch . Or have it checked for codes .

Dec 21, 2016 | GMC Cars & Trucks

1 Answer

How to fix rear hatch lock that won't release


Although the liftgate has no inside release mechanism,
the liftgate trim panel includes an opening with a
snap-in cap that provides access to release the latch in
the event of an electrical system malfunction.

It is possible that the handle is stuck in the "open position" which will not allow the hatch to unlock.

Apr 28, 2016 | 2010 Dodge Caliber

1 Answer

Power lift gate will not operate


You have to pull the inside door panel off an check it out , only way !
  • The lift gate latch release is inoperative/does not operate correctly
  • Circuitry
  • Liftgate release switch (integral to the liftgate release handle)
  • Liftgate release motor (integral to the liftgate latch)
  • Power liftgate module
  • SJB
  • Go To Pinpoint Test F .
Normal Operation The smart junction box (SJB) does not release the liftgate unless the doors have been unlocked electronically or the request is initiated from a remote keyless entry (RKE) transmitter.
The SJB sends a voltage signal to the liftgate release switch (part of the liftgate release handle) through circuit CPL45 (BN). When the switch is activated (the handle is pulled), the signal is routed to ground through circuit GD150 (BK/WH). When the SJB detects a request from the liftgate release switch, the SJB provides voltage through circuit CPL10 (BN/BU) to the liftgate latch release motor (integral to the liftgate latch) (vehicles with a manual liftgate) or the power liftgate module (vehicles equipped with a power liftgate). For vehicles with a manual liftgate, ground for the liftgate latch is provided through circuit GD150 (BK/WH).
DTC B2666 - is an on-demand DTC that sets when the SJB detects a short to ground from the liftgate release switch input circuit.
DTC B273A - is an on-demand DTC that sets when the SJB detects a short to ground from the liftgate latch release output circuit.
DTC B273B - is an on-demand DTC that sets when the SJB detects an open or short to voltage from the liftgate latch release output circuit.
    Possible Causes
  • Circuit CPL45 (BN) open or short to ground
  • Circuit CPL10 (GN/WH) open, short to ground or voltage
  • Circuit GD150 (BK/WH) open
  • Liftgate release switch (integral to the liftgate release handle)
  • Liftgate release motor (integral to the liftgate latch)
  • Power liftgate module
  • SJB
Your best bet is to take it to the dealer !

Nov 04, 2015 | 2008 Ford Expedition Eddie

1 Answer

My hatch won't release from the remote or the door switch. No solenoid sound at the hatch. How do I get it to open if it's not a bad fuse?


There are actually three relays , an there are controlled by the BCM - body control module !
When a door lock switch is activated in the lock or unlock position the BCM will receive a voltage signal on either the door lock switch lock or unlock signal circuits.
The BCM, upon receipt of a lock switch lock or unlock signal, will switch the appropriate lock relay control circuits to battery positive voltage. This will energize the appropriate lock or unlock relays. The relay will supply voltage to the door lock actuator lock or unlock control circuits to one side of the lock actuator. Since the opposing side of the lock actuators are connected to ground through the other lock actuator control circuit and the normally closed contacts of the lock or unlock relay, the doors and liftgate will then lock or unlock appropriately.
Three relays are used to operate the locks. DRV DR UNLCK relay, PASS DR UNLOCK and DR LCK relay. This is done to isolate the driver door lock actuator so it can be unlocked by itself using the keyless entry transmitter.
Rear Hatch/Gate Description and Operation
The liftgate can be opened by operating the switch on the instrument panel. Battery voltage is supplied to the liftgate actuator through the body control module (BCM). The BCM will pulse the liftgate actuator when a release input is received through the key fob, or the instrument panel switch.
Door/Lift gate Latch Assembly
  1. Install a 20-A fused jumper wire between the control terminal 3 and 12 volts. Install a jumper wire between the ground terminal 2 and ground.
  2. Verify the actuator turns on & off.
?‡'
If the function does not perform as specified, replace the applicable door latch.

Oct 01, 2015 | 2006 Pontiac Torrent

1 Answer

My GMC Denali Yukon XL rear hatch will not open. I tried the inside lock and the remote lock too. What else can I do to open it?


What year is it?
It may have an issue with the liftgate actuator... probably inoperative from what you\'re saying. You can open the liftgate manually, but it typically involves crawling into the rear cargo area with a handful of tools, pulling the rear trim panel off the liftgate from the inside, and then releasing the latch to open the liftgate, and then diagnosing the problem. It\'s a pain.

Aug 22, 2013 | Cars & Trucks

3 Answers

The rear lift gate on my 2006 Lincoln Navigator will not open automatically or manually and there appears to be no way to access anything inside the door from inside or out.


POWER LIFT-GATE OPERATION - To open the optional power liftgate, push the button on the instrument panel , press on your five-button key fob (if equipped), or press and release the control located in the left rear quarter panel (Figure B). To unlatch the liftgate glass, push the button ) under the center of the license plate lamp shield, or press on your five-button key fob. Do not open the liftgate or the liftgate glass in a garage or other enclosed area with a low ceiling. Keep clear of the liftgate when operating the rear switch. To open the liftgate manually, pull the handle located on the liftgate to release the liftgate from the vehicle. The power system will take over when you release the handle. To close, make certain the rear window is closed, and then pull down the liftgate a few inches to activate power closing. Closing the gate rapidly or more than a few inches may activate the obstacle detection feature and stop the power system.------------ Also click this link for more help:--- http://technoanswers.blogspot.com/2011/05/power-liftgate-on-will-not-open-on.html ------------ This should help.Keep updated.Thanks.Helpmech.

May 19, 2011 | Lincoln Navigator Cars & Trucks

1 Answer

How do you get liftgate open on a 97 Laredo with a broken lock?


You need to remove the panel from the liftgate and unlock and open it manually at the latch. It is not fun, but you can get the panel off with the hatch closed.

Jun 13, 2009 | 1997 Jeep Grand Cherokee

1 Answer

2001 Ford Escape Rear Hatch won't unlock


The liftgate consists of the following components:
  • liftgate door lock actuator
  • liftgate lock cylinder (if equipped)
  • liftgate window glass
  • liftgate window latch/ajar switch
  • liftgate window glass release handle
  • liftgate latch remote control which consists of the following component:
    • liftgate release handle
  • liftgate latch, which consist of the following component:
    • liftgate latch door ajar switch
Liftgate Latch Actuator Removal and Installation
  1. Remove the liftgate latch remote control. For additional information, refer to Liftgate Latch Remote Control in this section.
SECTION 501-14: Handles, Locks, Latches and Entry Systems 2001 Escape Workshop Manual
REMOVAL AND INSTALLATION Liftgate Latch Removal and Installation
  1. Remove the liftgate trim panel.
  1. Disconnect the liftgate ajar switch electrical connector.
  1. Disconnect the liftgate latch actuating rod.
    1. Open the clip.
    1. Disconnect the actuating rod.
  1. Remove and discard the liftgate latch bolts.
  1. Remove the liftgate latch.
  1. NOTE: Make sure the liftgate latch release rod is not preloading the latch. It should be clipped in a relaxed state with no slack.
    NOTE: Position the liftgate latch release rod by pushing outboard to remove the slack.
  1. Remove the screws and the liftgate latch actuator
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May 29, 2009 | 2001 Ford Escape

1 Answer

Liftgate emergency release cannot be found


2/3 of the way down this page with pictures

http://www.wjjeeps.com/liftgate.htm

All WJs feature an emergency unlock/lock switch lever for the liftgate. Should the liftgate become locked and unable to be opened due to a switch or circuit failure, a manual unlock/lock lever is accessible behind a small panel on the interior trim panel. As shown in the photos above, the lever can be moved up or down to unlock or lock the liftgate door.

Jeep Grand Cherokee WJ Liftgate trim and components

May 23, 2009 | 2008 Jeep Cherokee Grand

1 Answer

Liftgate will not unlock when i use power lock or the remote keyless entry transmitter. I checked the fuse LOCKS (rear doors and liftgate power lock relay feed) it is fine. The rear doors do unlock using...


if it was mine I would take the rear inside door panel off and see if there is any rust or bind in the power door lock motor itself and also make sure that no one has broken a key off or stuck anything in the lock cause I had an expedition with this same problem and it was a broken key in the lock

Jan 05, 2009 | 2004 Cadillac Escalade

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