Unlock with no lock?
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=20559
Printed Date: June 06, 2024 at 5:32 AM
Topic: Unlock with no lock?
Posted By: teek5449
Subject: Unlock with no lock?
Date Posted: October 25, 2003 at 5:41 PM
I just finished installing a Viper 550ESP in my 2000 Honda CRV and everything works great except the unit will not lock the doors. I can manually ground the lock wire in the harness causing it to lock the doors but it won't work when plugged into the alarm unit itself.
I Since the unlock works I am at a loss as to where to start to troubeshoot this problem. Any help is much appreciated. Thanks Mike
Replies:
Posted By: vaderfop
Date Posted: October 25, 2003 at 6:29 PM
Are you sure that you got the correct wire?
Are you using a 451M door lock relay set? If you are then did you ground the purple and the PURPLE / blk wires (they should be connected already coming from the factory)? If you did that, make sure it is a good ground and try that.
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Remember check all your wires with a DMM!
Posted By: jrilla
Date Posted: October 25, 2003 at 6:30 PM
ARe you trying to lock with the driver door open?
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J Rilla
Owner/Installer
Posted By: teek5449
Date Posted: October 25, 2003 at 6:42 PM
"Are you sure that you got the correct wire?" Yes
"Are you using a 451M door lock relay set? If you are then did you ground the purple and the PURPLE / blk wires (they should be connected already coming from the factory)? If you did that, make sure it is a good ground and try that." I'm not using a relay set.
/q/ARe you trying to lock with the driver door open?/q/ I thought of that when I read your response. I have tried it both ways. I know that Hondas won't lock with driver door open.
Should I be using a relay seeing that the unlock does not need a relay and I can jump the alarn harness to ground causing the doors to lock?
Posted By: Velocity Motors
Date Posted: October 25, 2003 at 7:00 PM
Have you tested the output on the LOCK wire to be sure that it is a (-) pulse ?
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: daniel2002p
Date Posted: October 25, 2003 at 7:10 PM
Yes, always hook up relays because you might fry your brain module. Add a relay or make sure that the alarm is really putting out a negative signal and not a positive. ------------- 2005 Toyota Corolla S
1.8L VVT-i I-4
Always double check your wires with a DMM!!!
Do Not Use A Test Light!!!
MECP Certified Installer!
Best Buy 665 - IN IT TO WIN IT! TEAM MOBLE!
Posted By: teek5449
Date Posted: October 25, 2003 at 7:29 PM
According to the Electrical Troubleshooting Manual and by testing I am sure that this is a type b (- pulse) system. As far as the alarm unit is concerned the installation guide shows the the wire in question is a (-)lock, (+) unlock output. I have wired up the unlock wire, which uses a similar output, with no problems. Thanks for your help so far.
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