door lock won’t work remote start
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=134074
Printed Date: May 14, 2024 at 4:21 AM
Topic: door lock won’t work remote start
Posted By: autofixit
Subject: door lock won’t work remote start
Date Posted: April 19, 2013 at 9:57 PM
Installed a Viper 4204 in 2001 Silverado everything works fine except the door locks gave me some problems initially. Wiring diagrams show this vehicle as Type A, so I hooked up Viper door lock/unlock wires directly to vehicle door lock/unlock wires at BCM, but neither lock or unlock would work. I looked at the relay diagrams on the 12volt and then hooked up the relays for positive 3 wire and now only unlock works. I cannot get lock function to work with this configuration. Am I missing something and should hook up different relay configuration (i.e. 5 wire configuration)? At rest, wires are at ground, but when individually activated lock shows 12V and unlock shows 12V also.
Replies:
Posted By: Chris Luongo
Date Posted: April 20, 2013 at 7:22 AM
Hopefully the remote starter's lock output didn't get damaged.
Test the green lock wire from the remote starter while operating the Viper lock button. See if it makes a ground.
Posted By: howie ll
Date Posted: April 20, 2013 at 6:16 PM
Because and I know Chris doesn't agree with me but those diagrams don't show quenching diodes, not withstanding poor wiring, hands up anyone who's NEVER miswired a relay in a 5 wire set-up and blown a fuse?
-------------
Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
Posted By: kreg357
Date Posted: April 20, 2013 at 6:38 PM
Howard, my hand is not up.  Got a whole bag of 10 Amp fuses.
You could have the wrong ( Lock ) wire at the BCM. Verify with a DMM.
Power Lock Light Blue (+) @ BCM, brown plug, pin A4
That truck should be a straight (+) to the listed BCM lock wire. You shouldn't need
a 5 wire relay set-up. You can test your relay and connections by simply disconnecting
the Viper's Green Lock wire to the Relay ( hopefully @ Pin 85 ) and applying a brief chassis
ground to that relay pin. ------------- Soldering is fun!
Posted By: howie ll
Date Posted: April 20, 2013 at 11:41 PM
Confirming relay wiring:-
neg_to_pos_lock_outputs..bmp
I meant all relay types above, upside down in a Euro Civic driver's kick panel with 5 wire locking and what YOU think goes to the doors is in fact coming from the control unit. ------------- Amateurs assume, don't test and have problems; pros test first. I am not a free install service.
Read the installation manual, do a search here or online for your vehicle wiring before posting.
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