I have an apparent problem with a door lock actuator, and hope someone can provide a bit of background on how they operate.
The patient is a 1999 Toyota Sienna LE, and the door is the rear lift gate, but my question is more about how these electric switches work.
The problem I have is that the actuator will lock the latch every time, but has now entirely stopped UN-locking it.
Is that because there are two separate solenoids within the actuator, one for each direction, and one has failed?
I’ve studied the mechanism and have a pretty good idea of how it works. I can’t see anything physically broken, and I understand what has to happen to unlock. With that knowledge, I can unlock it manually with a small hook tool. If the new part were half the price it really is, or less, I’d just buy a new one. But it’s more than twice what I want to pay.
I’ll try scavenging at recycling yards in the next few days, but meanwhile, can anyone provide any insight into this?