1989 toyota locks, valet 562
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=110532
Printed Date: May 15, 2024 at 4:21 PM
Topic: 1989 toyota locks, valet 562
Posted By: rfj62
Subject: 1989 toyota locks, valet 562
Date Posted: January 10, 2009 at 6:17 PM
I'm installing a Valet 562T on my 1989 Toyota Land Cruiser and need some help with the locks. I know the Toyota has a 4 wire reversal locking circuit controlled from the drivers door. In the manual for the 562 it states that it supplies +/- pulse. At this time it is outputting a +12v pulse and I do not see a negative pulse at all, do I have to set the module to output a - pulse or is there something else that I need to do? Thanks for any input. jeff
Replies:
Posted By: loneranger
Date Posted: January 10, 2009 at 6:20 PM
The lock/unlock circuit in DEI products, as well as others, uses a flip-flop design. That Means, when one is positive the other is negative and vise versa. That is a reason for diode isolation those outputs, as well.
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Ideal - cmon dude, add to topics in a useful manner, not stuff that is obvious.
Story - Phzzzt! Hey, what happened?! ... Isn't it obvious?
Moral - Never dismiss the obvious.
Posted By: rfj62
Date Posted: January 10, 2009 at 7:35 PM
Thanks for the response and another question. I checked the lock wires and I have 200 ohm on each wire to ground. When I push the lock or unlock button I get 12v on one side but no movement on the other wire, should that 200 ohms drop to 0 ohms temporarily, I get no visible movement on my meter? Also, I tapped into the door lock circuit right after the master switch, is that the right location?
Posted By: loneranger
Date Posted: January 10, 2009 at 8:14 PM
I hope you're using relays!? Read this schematic. ------------- Ideal - cmon dude, add to topics in a useful manner, not stuff that is obvious.
Story - Phzzzt! Hey, what happened?! ... Isn't it obvious?
Moral - Never dismiss the obvious.
Posted By: rfj62
Date Posted: January 10, 2009 at 8:31 PM
According to the description I shouldn't need a relay am I reading it right?
Posted By: chriswallace187
Date Posted: January 11, 2009 at 12:02 AM
On a 4-wire rest-at-open system like your Land Cruiser is equipped with, you will need either 4 separate relays or 2 451M doorlock modules, wired according to this diagram:
The 562T's outputs can only directly drive 3-wire (-) or 3-wire (+) doorlock systems. ------------- C Renner's Auto Electronix
My service is cheap, quick, and good - pick any two
Posted By: howie ll
Date Posted: January 11, 2009 at 11:00 AM
Chris you're right I seem to remember doing one of these about 12 years ago and couldn't work out why I needed 4 relays, now it ties in with what you said recently about some GM product and my comment about London Taxis... rare but a real head scratcher.
Posted By: rfj62
Date Posted: January 11, 2009 at 11:58 AM
Thanks for the advise, its been irking me to no end, it's good to finally have an answer. I will pick up 2 451M modules and give it a shot.
Posted By: loneranger
Date Posted: January 11, 2009 at 12:02 PM
rfj62] wrote:
hanks for the advise, its been irking me to no end, it's good to finally have an answer. I will pick up 2 451M modules and give it a shot.
If you haven't already burned out the modules lock/unlock circuit then, yes. ------------- Ideal - cmon dude, add to topics in a useful manner, not stuff that is obvious.
Story - Phzzzt! Hey, what happened?! ... Isn't it obvious?
Moral - Never dismiss the obvious.
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