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Factory Central Locking Motors At Rest, Toad RK30, 1998 Mitsubishi L300


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shaunie61 
Copper - Posts: 47
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Location: United Kingdom
Posted: April 05, 2019 at 9:01 AM / IP Logged Link to Post Post Reply Quote shaunie61
How can I detemine whether my central locking motor legs are open or at ground when they are at rest?
Shaun
geepherder 
Platinum - Posts: 3,587
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Posted: April 05, 2019 at 5:16 PM / IP Logged Link to Post Post Reply Quote geepherder
Pull the door panel and test at the two actuator wires with your meter. Test for voltage first. If they don't have power, check for continuity to ground. That will tell you for sure.
Also, search "1041" in the downloads section. It's an old tech tip that explains door lock systems.
My ex once told me I have a perfect face for radio.
shaunie61 
Copper - Posts: 47
Copper spacespace
Joined: February 14, 2019
Location: United Kingdom
Posted: April 06, 2019 at 4:43 PM / IP Logged Link to Post Post Reply Quote shaunie61
That was a great piece of advice.Ive now established that the legs rest at ground.
Next is to establish whether the keyless entry module gives a positive pulse or a negative pulse,by using a test lamp.I'll update when I've done this.
Most of the wiring diagrams show three or five wires at the switch on the dash.On mine there are just four.+ve in,-ve in,and twoswitched wires to the legs of the motors resting at ground.There are no relays,just direct wired, switch controlled. But are they Negative or positive trigger? How do I find out please?
Shaun
shaunie61 
Copper - Posts: 47
Copper spacespace
Joined: February 14, 2019
Location: United Kingdom
Posted: April 07, 2019 at 4:13 PM / IP Logged Link to Post Post Reply Quote shaunie61
Having established that the motor legs are at ground when at rest,I am now questioning whether I am correct. I removed the switch from the dash and disconnected the connector block. Should I have left the switch connected to the wires?
The RKE module give a positive pulse and on the basis that the C/L system rests at ground I added two relays to convert both the lock and unlock outputs to negative trigger ,but nothing happens at all,now.Not sure where to go next.
Your help is greatly appreciated....
Shaun
geepherder 
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Posted: April 07, 2019 at 6:41 PM / IP Logged Link to Post Post Reply Quote geepherder
It's best to leave the switch, so you can test all wires in all states (at rest, at unlock, at lock).
What is the vehicle?
My ex once told me I have a perfect face for radio.
shaunie61 
Copper - Posts: 47
Copper spacespace
Joined: February 14, 2019
Location: United Kingdom
Posted: April 07, 2019 at 7:45 PM / IP Logged Link to Post Post Reply Quote shaunie61
Its a Mitsubishi L300 panel van.1998
Shaun
shaunie61 
Copper - Posts: 47
Copper spacespace
Joined: February 14, 2019
Location: United Kingdom
Posted: April 09, 2019 at 5:10 PM / IP Logged Link to Post Post Reply Quote shaunie61
As far asci can make out I have the four wire reverse polarity locking system...
Shaun
geepherder 
Platinum - Posts: 3,587
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Posted: April 09, 2019 at 6:14 PM / IP Logged Link to Post Post Reply Quote geepherder
That's what I was thinking.
My ex once told me I have a perfect face for radio.
shaunie61 
Copper - Posts: 47
Copper spacespace
Joined: February 14, 2019
Location: United Kingdom
Posted: April 10, 2019 at 5:31 PM / IP Logged Link to Post Post Reply Quote shaunie61
I need to do some serious testing to establish whether the factory locking is +ve or-ve trigger.The output from the keyless entry module is +ve.
Shaun
geepherder 
Platinum - Posts: 3,587
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Posted: April 11, 2019 at 4:09 AM / IP Logged Link to Post Post Reply Quote geepherder
If both actuator legs rest at ground, then one leg on each actuator would need to be opened and 12 volts applied.
Check the actuator wires and see which one gets power on lock and unlock.
https://www.the12volt.com/relays/relaydiagram49.html
My ex once told me I have a perfect face for radio.
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