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Any auto electricians out there ? help please !

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Old Aug 28, 2017 | 05:35 PM
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From: Y-cat-o NZ
Any auto electricians out there ? help please !

Have been trying to fix the boot release on one of my rx8s . So far iv'e done this :

*swapped in an entire working mechanism (tested good with battery )
*Checked that voltage gets to plug connector in boot (trunk) when button under dash is pushed.
*checked that ground wire at plug has path to ground (with ohmmeter)

Can't think what else to check , any suggestions welcome .
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Old Aug 28, 2017 | 06:34 PM
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Are you sure it's not a mechanical issue, in a bind or something?
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Old Aug 28, 2017 | 06:44 PM
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From: Y-cat-o NZ
Originally Posted by BigCajun
Are you sure it's not a mechanical issue, in a bind or something?
pretty sure - the key entry works fine .... it's just the electric opener that doesn't work . Would hear a noise from the mechanism if it were trying to work ...but there is none.
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Old Aug 28, 2017 | 07:21 PM
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Did you check the switch itself? Press and look for continuity, as it is a momentary switch.

If it works with the remote it's the in the connection somewhere, button, power wire or ground. Ground might be fine if it opens with the remote, wire should also be ok as it gets power, then the last would be the switch itself or it's connection.
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Old Aug 28, 2017 | 08:12 PM
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Adding diagram to see if it helps

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Old Aug 28, 2017 | 08:54 PM
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Originally Posted by boricua13
Did you check the switch itself? Press and look for continuity, as it is a momentary switch.

If it works with the remote it's the in the connection somewhere, button, power wire or ground. Ground might be fine if it opens with the remote, wire should also be ok as it gets power, then the last would be the switch itself or it's connection.
I checked the entire circuit by operating the switch in the cabin and putting a volmeter on the contact pins on the plug in the boot. That showed 12v to the plug contacts when the button is pushed.

I don't have a remote for the car so can't check if that does anything different . Only way into the boot is with the key - that does work .

Last edited by Brettus; Aug 28, 2017 at 08:56 PM.
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Old Aug 28, 2017 | 09:04 PM
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The picture is a little blurry, here is the pdf
There are a couple of relays you may want to check.
Attached Files
File Type: pdf
trunk.pdf (859.0 KB, 302 views)
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Old Aug 28, 2017 | 09:09 PM
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From: Y-cat-o NZ
Originally Posted by boricua13
The picture is a little blurry, here is the pdf
There are a couple of relays you may want to check.
If there was a relay issue , surely I wouldn't get 12v to the plug in the boot ?
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Old Aug 29, 2017 | 12:39 AM
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What about the button in the glove box?
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Old Aug 29, 2017 | 12:40 AM
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From: Y-cat-o NZ
Originally Posted by sinkas
What about the button in the glove box?
Mine doesn't have that button .
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Old Aug 29, 2017 | 06:36 AM
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Originally Posted by Brettus
If there was a relay issue , surely I wouldn't get 12v to the plug in the boot ?
You may be getting 12v there, but if the internals are shot, the relay will not work.

Take the relay out and test it just to be sure, that's a N/O relay
AGCO Automotive Repair Service - Baton Rouge, LA - Detailed Auto Topics - How to Check Fuses and Relays

Last edited by boricua13; Aug 29, 2017 at 06:38 AM.
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Old Aug 29, 2017 | 03:13 PM
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Originally Posted by Charles R. Hill
Brett, would you consider connecting the known working latch to the electrical connector but NOT actually securing it to the chassis (let it hang free) and see if the latch fully actuates when the button is pressed? Maybe even install an ammeter to check the load of the latch on the circuit? Voltage is one thing, but current draw is another. Just an idea......
Ok ...I'll try that . Thanks
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Old Aug 29, 2017 | 03:23 PM
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From: Y-cat-o NZ
Originally Posted by boricua13
You may be getting 12v there, but if the internals are shot, the relay will not work.

Take the relay out and test it just to be sure, that's a N/O relay
AGCO Automotive Repair Service - Baton Rouge, LA - Detailed Auto Topics - How to Check Fuses and Relays
Thanks , will swap out that relay and see if that makes a difference .
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Old Aug 30, 2017 | 04:28 PM
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Took out the relay yesterday and while i was fiddling with it the boot release activated a few times ...so pretty sure that's the issue . Haven't got a new one yet but man that bitch was hard to get out !
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Old Aug 30, 2017 | 05:03 PM
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That's a good sign.
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Old Sep 2, 2017 | 12:25 AM
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All fixed . Thanks for the help . Feel a bit silly for not suspecting the relay .
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Old Sep 2, 2017 | 07:04 AM
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Originally Posted by Brettus
All fixed . Thanks for the help . Feel a bit silly for not suspecting the relay .
It happens.
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Old Sep 3, 2017 | 06:56 AM
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From: Niagara Falls, NY
Originally Posted by Brettus
All fixed . Thanks for the help . Feel a bit silly for not suspecting the relay .
Glad you were able to fix it.
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