door lock problem

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=4144
Printed Date: August 10, 2025 at 12:09 PM

Topic: door lock problem

Posted By: trust
Subject: door lock problem
Date Posted: October 02, 2002 at 8:31 PM

Hi People,
Are there any clevor people here who could possiably help me to work out the door lock scheme of my car? It is a 1990 nissan 240sx (american) or 180sx (jap / aus). There are four wires (i am pretty sure) coming out of the actuator on the drivers side. Does anyone know what they will be? educated guess are great also !!!

Thanks in advance !

Replies:

Posted By: diabloed
Date Posted: October 02, 2002 at 9:08 PM

this should be able to help you out

https://www.the12volt.com/installbay/detail.asp?info=alarm&year=1989-90&make=Nissan&model=240%20SX&ID=18509&type=Alarm

Posted By: trust
Date Posted: October 02, 2002 at 9:10 PM

ahhh, many thanks diabloed. also does anyone know if there is some sort of control box with these car door systems?

Posted By: Velocity Motors
Date Posted: October 03, 2002 at 6:00 PM

This is one of the three known systems Nissan used in early production. To operate, open(cut) the org/blk wire and the doors will lock, pulse the same wire to ground and the doors unlock. The other two systems are negative pulse (ORANGE / black for lock and ORANGE / blue for unlock both at the door lock timer in the passenger kick behind the ecm.) and non-centralized - add actuator in driver's door.

-------------
Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA