Question about 2002 Chrysler PT Cruiser
I recently had a similar problem with the "liftgate ajar" light lighting randomly on my 2001 PT Cruiser. It was even occurring AFTER I had disconnected the "ajar sensor" on the liftgate. Finally found that 5 wires were broken, one of them the liftgate ajar sensor wire, in the wire bundle that leaves the top of the liftgate and goes into the chassis. I suspect that those broken wires would randomly trigger. Inline spliced the wires and resealed the bundle. Everything looks good for now, although time will tell.
Posted on Aug 03, 2016
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Posted on Jan 02, 2017
there is an update foe the body control module that will generally fix the problem. you will ned to take it to the dealer to have it done.
Posted on Jan 03, 2009
There is a switch or sensor on the door frame either on the hinch side or on the latch side. Try to activate it with the the car on. With the door open, the door open light should light on, if it is a mechanical switch, push it in, if a sensor, touch it with a steel object, the light should turn off. This means the door switch is working ok. Now try the same again but this time push the switch slowly until the door ajar warning light turns on. This means that the switch works ok. Now, close the door from outside and check that there is no gap betwwen the body and the door line all over the perimeter of it. If there is a gap mainly at the latch side or at the hinch side, it can be your problem. If so, let me know so I can show you how to adjust the door to eliminate the gap.
If there is no gaps, your door switch is to low (too far in), let me know so I can show you how to adjust it.
Posted on Jan 15, 2009
Try spraying WD-40 into the door latching mechanism (door side). I learned this fix after two battery replacements, but have only had to spray twice in the more than seven years of ownership
Posted on Jan 29, 2009
I had this problem on my 2003 explorer and took WD40 and gave the lock mechanism a good dose where it meets the clasp on the door jam. Then open and close the doors a couple of times to get them working. They get gummed up and sometimes have a tendency to stick.
Posted on Feb 18, 2009
there should be a switch mounted( or more than one) in the door jamb that tells the car when the car door is open...i will probably look like a little plastic plunger...might be broken off or bad internally
Posted on Feb 22, 2009
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The liftgate lamps
The courtesy lamp supply voltage circuit of the body control module (BCM) supplies battery positive voltage to the dome lamp, the liftgate lamps, and the map lamps. When any door is opened, the door jamb switch contacts close providing a door open input to the BCM. The BCM then provides a ground to the interior lamps with the switch in the AUTO position. The interior lamps receive a ground at G401 with the switch in the ON position.
Important: If the liftgate is opened after all the modules go to sleep, the dome light will not come on. The liftgate ajar switch input to the BCM will not wake up the BCM once it has gone to sleep, so the dome light will not come on. Once the BCM gets an input to wake it up, from remote keyless entry (RKE) or a door handle, the dome light will turn on when the liftgate is opened.
If the driver inadvertently leaves any interior lamp ON, the BCM will turn it OFF after a 20 minute time-out.
The courtesy lamps will turn OFF immediately if the ignition switch is turned to the ON position or approximately 20 seconds after all doors are closed.
The courtesy lamps are controlled by the body control module (BCM). Inputs from the dome lamp switch and the door ajar switches are monitored by the BCM. When a door ajar switch is closed, or the dome lamp switch is turned to the ON position, the BCM supplies the B+ for the courtesy lamps.
With out a factory Tech2 scan tool or equivalent an knowing how these systems work ,you best bet is to take your vehicle to the dealer or some other ASE certified repair shop !
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