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Decklid/liftgate release problem

 
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Old 09 Apr 2018, 08:01 pm
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Default Decklid/liftgate release problem

Hi everyone.

I have a question about the liftgate on a 2009 PT Cruiser.

But a little background information. I have rewired my mom's starter relay and ignition switch a year ago to bypass bad connector that I could not reach. The car has been running decently until now.

The car will not start often and has to use other bypass methods which usually require 2 people to start the car. I'm not always around to help my mom with that.

Before the car stopped working again, I've noticed a pattern of the liftgate locking every time the car wouldn't start but when Im able to open the liftgate the car usually starts.

My theory is parasitic drain due to faulty liftgate. Probably corroded wire or something.

Now I used test-light on connectors in the liftgate and notice one wire out of whack. It is a wire from C1 instrument cluster yllw/tan wire going to motor of liftgate. Should be hot when I had test light on both cluster and behind motor connector but shows no red.

Anyone know where C1 instrument cluster leads to? I may be able to correct the source of it and allow voltage to move through cluster C1 again.

Thanks again.
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Old 10 Apr 2018, 12:32 am
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Default Re: Decklid/liftgate release problem

I am suggesting you get the Factory Service Manual. Since you have already modified circuits when you do get your manual it might make sense to you when you start diagnosing all the issues you are having with your Pt Cruiser.
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Old 10 Apr 2018, 06:32 am
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Default Re: Decklid/liftgate release problem

Yeah. A wiring diagram is usually helpful. Mopar wiring diagrams are sometimes difficult as they send you from page to page, and take a lot of time to figure things out.

I don't believe the tailgate is related to your other problem[s]. A low voltage is sent to the tailgate switch. When the switch is grounded out, the body control module [TIPM involved?] sends current thru to the liftgate motor for a few seconds. --PRESTO-- gate opens
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Old 10 Apr 2018, 08:37 pm
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Default Re: Decklid/liftgate release problem

Quote:
Originally Posted by pt06 View Post
Yeah. A wiring diagram is usually helpful. Mopar wiring diagrams are sometimes difficult as they send you from page to page, and take a lot of time to figure things out.

I don't believe the tailgate is related to your other problem[s]. A low voltage is sent to the tailgate switch. When the switch is grounded out, the body control module [TIPM involved?] sends current thru to the liftgate motor for a few seconds. --PRESTO-- gate opens
I am currently using alldata right now and seems still pretty accurate. I found the pins according to their diagrams for cluster 1 and the connectors at the gate.

The problem with the gate is that it locks into place and wont open no matter how many times I hit unlock on driver side. Then every 1 day out of 20 it magically opens. So basically the other 19 out of 20 times the gate is always locked. Doesn't this mean that voltage is constantly being sent to the gate (perhaps to keep it locked?)
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Old 10 Apr 2018, 10:04 pm
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Default Re: Decklid/liftgate release problem

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Originally Posted by mecholectric View Post
I am currently using alldata right now and seems still pretty accurate. I found the pins according to their diagrams for cluster 1 and the connectors at the gate.

The problem with the gate is that it locks into place and wont open no matter how many times I hit unlock on driver side. Then every 1 day out of 20 it magically opens. So basically the other 19 out of 20 times the gate is always locked. Doesn't this mean that voltage is constantly being sent to the gate (perhaps to keep it locked?)
good thing that Chrysler wiring diagrams are the best in the industry (in my opinion)

go read up on the 'description and operation' for the electronic door release. in fact, if i was you, i would just replace the tailgate with a manual pull handle. these cars never came with an emergency release, i couldn't find one in the wreckers anyway. perhaps its just me ?
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Old 11 Apr 2018, 06:15 am
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Default Re: Decklid/liftgate release problem

Quote:
Originally Posted by _PTGT03 View Post
good thing that Chrysler wiring diagrams are the best in the industry (in my opinion)

go read up on the 'description and operation' for the electronic door release. in fact, if i was you, i would just replace the tailgate with a manual pull handle. these cars never came with an emergency release, i couldn't find one in the wreckers anyway. perhaps its just me ?
And what's even worse is that on the later Gen2's, some bright bean counter at Chrysler did away with the outside key lock cylinder on the rear hatch, so when the electric actuator or touch-pad switch fails, you have no manual way to open the hatch.
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Old 11 Apr 2018, 09:33 am
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Default Re: Decklid/liftgate release problem

Quote:
Originally Posted by _PTGT03 View Post
good thing that Chrysler wiring diagrams are the best in the industry...these cars never came with an emergency release, i couldn't find one in the wreckers anyway. perhaps its just me ?
If wanted, one needs to DIY an emergency mechanical release as I did when I replaced my mechanical release with an electrical release
Pulling the OEM door lock-pin releases the hatch

This is not child-safe, but could be so engineered
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Old 11 Apr 2018, 09:56 am
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Default Re: Decklid/liftgate release problem

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Originally Posted by sanatanadharma View Post
If wanted, one needs to DIY an emergency mechanical release as I did when I replaced my mechanical release with an electrical release
Pulling the OEM door lock-pin releases the hatch

This is not child-safe, but could be so engineered

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Old 11 Apr 2018, 02:25 pm
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Question Re: Decklid/liftgate release problem

Mecho; the 'unlock' button on the drivers door only allows you to go to the tailgate and pull on the half-moon shaped handle/ground-out switch. This energizes the motor in the tailgate. In very cold weather I have to push in on the tailgate to get it to release.
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Old 11 Apr 2018, 09:35 pm
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Default Re: Decklid/liftgate release problem

Mecho; the ground-out tailgate switch is not very durable. It breaks internally and cannot repaired. It's expensive to buy and difficult to install. Others have installed a generic switch to make the tailgate function. I used a piece of brass shimstock [.010" thick] and soldered the wire to it. The brass is isolated from the cars body and when a hand pulls up on the 'half moon' handle, the brass grounds out and the tailgate opens.

There is a connector behind the left rear pillar plastic cover. The tan/dk-green wire is the sense wire. When it is grounded the tailgate motor should energize for a second or two. A sewing pin jammed into the connector and a small jumper wire worked for me. The tan/dk-green wire is for a 2006. Verify your color.
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