power door locks
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Joined: Jun 2010
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power door locks
need help with power door locks on 79 vette ,checking with test light I have voltage at orange wire on back of switch and when switching there is voltage on gray wire to the actuator ,actuator does not move ,can an actuator be checked by grounding it to negative of battery and positive of battery to one of the two terminals
Le Mans Master
Joined: Sep 2002
Posts: 5,235
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From: Myrtle Beach SC
need help with power door locks on 79 vette ,checking with test light I have voltage at orange wire on back of switch and when switching there is voltage on gray wire to the actuator ,actuator does not move ,can an actuator be checked by grounding it to negative of battery and positive of battery to one of the two terminals
In addition, actuators are electro mechanical devices. After thirty years, those actuators can fail. If the plastic sheath deterioriates, it exposed the plunger shaft to moisture that can corrode after years of exposure will fail to "pop" when electrical current is delivered.
Go back and check continuity at both switches and actuators. Also check actuators for deterioration of the plastic sheath. Let us know what you find
Race Director
Joined: May 2006
Posts: 16,528
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From: Dayton, Ohio
with above........................................ ........................................ ....................
Personally 1 of the first things I do is to replace both switches and if the connectors are old and corroded those also. Most of the time this fixes it.
Check the ground on the passenger door.
Instructor
Joined: Aug 2010
Posts: 233
Likes: 18
From: Monrovia Md
The way the locks are wired, BOTH switches have to be working for either of them to work. In most cases the problem is the one of the two or both switches. At their age, if they sit for a while, corrosion stops them from working. I got my working by spraying DEOX inside them and working the corrosion out.
Racer
Joined: Apr 2005
Posts: 465
Likes: 1
From: FRANCE (Lyon)
