Not enough power to the door lock actuators

[jwebster]

There's nothing there written on it.

[jimmy57]

The PTC is there to save motor from a stuck relay. When the 240's used a two changeover relay system to operate door locks with crude switch clamped around door lock cylinder, the switch would fail or a relay would fuse contacts and stick on. PTC was introduced for this.
The Denso lock control module on x70's has no history of that.

The newer cars with network have no PTC's but are a completely different

If you ever operated your working locks multiple times, like testing remotes, and you noticed one or two just quit but later worked normally, that is the PTC doing its thing.

[whoa]

Well if you (jwebster) have one that had not failed, and you have an ohmmeter, would you be willing to measure the resistance at room temperature and after sitting in your freezer for an hour?

[jwebster]

I can't forsee that being possible.