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trunk release, 95 saturn sc2


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ralliart16 
Member - Posts: 17
Member spacespace
Joined: September 10, 2007
Location: Florida, United States
Posted: September 10, 2007 at 6:03 PM / IP Logged  
1995 Saturn SC2 - Viper 5900 SST Alarm
Hello everyone,
I purchased the electric trunk release mechanism from saturn that is designed for 00+ saturns, as my car originally came with a standard manual latch. I have everything hooked up correctly, and when I ground the trigger wire (negative trigger) the latch opens.
According to my Viper alarm manual, the AUX trigger output wire is a 200ma (-) signal, and I must use a relay to hook it up to the trunk solenoid.
Hooked up the relay. When I ground the pin of the relay that goes to the viper output wire, the latch opens, so everything is hooked up right.
BUT, if i hook it to the viper otput wire, and hold the AUX button, the remote beeps signalling the signal is being sent, but the latch does not open (although I hear faint click from the latch solenoid). The alarm wire output isn't grounding it?
the relay was just a 40 amp one i got from advance auto... this should work right? Someone said I need a relay that has a low current coil.. but this seems silly to me.
trunk release, 95 saturn sc2 -- posted image.
jim hunter 
Silver - Posts: 351
Silver spacespace
Joined: March 23, 2006
Location: United States
Posted: September 10, 2007 at 9:06 PM / IP Logged  
which wire are you using off the viper5900 to trigger the trunk release actuator? the RED / whire is channel 2 output for trunk pop, if you are using any other wire as the trigger it is controlled by other buttons on the remote, if your using the RED / white try using your volt meter and verify the output is sending a ground signal (which apperently it is not, u could then just use 1 of the other outputs on harness h2(ch 4(violet/blk controlled by pressing lock and aux at the same time) or ch5(WHITE/ blk controlled by pressing unlock and aux at the same time)
ralliart16 
Member - Posts: 17
Member spacespace
Joined: September 10, 2007
Location: Florida, United States
Posted: September 10, 2007 at 10:04 PM / IP Logged  
its connected to the RED / white wire.
(newb question) how do i verify the output is sending a ground signal?
ie, using a multimeter, what should the RED / white wire read at rest, and what should it read when the aux button is pressed?
Chris Luongo 
Platinum - Posts: 3,746
Platinum spaceThis member consistently provides reliable informationspace
Joined: May 21, 2002
Location: Massachusetts, United States
Posted: September 12, 2007 at 9:06 PM / IP Logged  
The RED / white wire will test as more-or-less 12 volts at rest, simply because the relay coil (85 to 86) carries enough constant power to trigger the multimeter.
If you disconnect the RED / white from the relay entirely, it should be dead at rest, and put outa ground when you press the correct button on the Viper remote.
TIP: Also, the relay should emit an audible click when it's working.
If it doesn't click, the 85/86 coil terminals need further troubleshooting.
If it clicks, the 87/30 terminals need further troubleshooting.
OTHER TIP: Undo 86 from the alarm, and simply jump 86 to the car's chassis ground. If the trunk opens, the relay must be wired correctly.
ralliart16 
Member - Posts: 17
Member spacespace
Joined: September 10, 2007
Location: Florida, United States
Posted: September 14, 2007 at 10:55 PM / IP Logged  
wow, this is really frustrating.
Everything is hooked up correctly - when I ground the 85 pin, the relay clicks and the latch opens. When the viper aux output is connected to this pin and the AUX button held, the remote shows the aux is activated, but nothing, no click from the relay.
To make things tricker, I tested the viper aux wire removed the relay. Took multimeter, red on the battery, and i took the negative pin and connected it to the viper wire. No voltage reading, showing no ground. Held AUX, multimeter showed 12 V, indicating ground on the aux wire.
But.. once again, when connected to the relay, it does not work! ideas?
enice 
Silver - Posts: 857
Silver spacespace
Joined: March 05, 2006
Location: New York, United States
Posted: September 14, 2007 at 11:09 PM / IP Logged  

Get another 5900.  It could be that the RED / white wire doesnt even have enough current to even drive a relay.  Try another channel of the system.  Usually you can get another by using a wire on the redish harness and connecting it to the relay.

jim hunter 
Silver - Posts: 351
Silver spacespace
Joined: March 23, 2006
Location: United States
Posted: September 15, 2007 at 3:08 PM / IP Logged  
just try to use 1 of the other outputs on harness h2(ch 4(violet/blk controlled by pressing lock and aux at the same time) or ch5(WHITE/ blk controlled by pressing unlock and aux at the same time)sounds like a problem with the RED / white not having enough power to even open a realy which is cary as it doesnt take much
ralliart16 
Member - Posts: 17
Member spacespace
Joined: September 10, 2007
Location: Florida, United States
Posted: September 15, 2007 at 11:21 PM / IP Logged  
thanks jim. Tried the violet/black output, and it worked great.
However, having to press lock and aux at the same time is kind of annoying lol. The violet/black wire is (-) 200ma wire, just like the RED / white one.
Could the viper module be damaged internally? In the manual it specifies to NEVER HOOK THE TRIGGER WIRE DIRECTLY TO THE SOLENOID, DAMAGE TO THE TRANSISTOR WILL OCCUR.
When I first hooked it up, I did not read the manual (trunk release, 95 saturn sc2 -- posted image. ) and hence did this. Does the module really damage this easily?
JWorm 
Platinum - Posts: 2,208
Platinum spacespace
Joined: December 11, 2002
Location: New Hampshire, United States
Posted: September 16, 2007 at 12:45 AM / IP Logged  
ralliart16 wrote:
thanks jim. Tried the violet/black output, and it worked great.
However, having to press lock and aux at the same time is kind of annoying lol. The violet/black wire is (-) 200ma wire, just like the RED / white one.
Could the viper module be damaged internally? In the manual it specifies to NEVER HOOK THE TRIGGER WIRE DIRECTLY TO THE SOLENOID, DAMAGE TO THE TRANSISTOR WILL OCCUR.
When I first hooked it up, I did not read the manual (trunk release, 95 saturn sc2 -- posted image. ) and hence did this. Does the module really damage this easily?
You fried the output. You had an output capable of .2 amps attempt to put out a burst of current that was probably 5 - 10 amps.
You can reprogram the remote to have the AUX button control the violet/black wire instead. Read the part of the manual about programming individual channels/buttons on the remote. If you still need help I can explain better tomorrow.
enice 
Silver - Posts: 857
Silver spacespace
Joined: March 05, 2006
Location: New York, United States
Posted: September 16, 2007 at 9:31 AM / IP Logged  

I think that if he connected the wire directly then it would possibly FAIL  and not damage the transistor.  You misread the manual.  It states that the transistorized output will only supply 200ma.  This would not damage the output.  If you connect it directly then it just might not work.  The unit could have already been defective.  Only other way the output would of damaged is if the output wire(which is negative) was connect to a wire that always had positive and you triggered it thus causing negative and positive to meet and FRY.

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