30 seconds? Really? That tells you what is wrong.

Here is the thing: The pump runs to lock each lock. When each lock does lock (or unlock), it sends an electrical signal to the CLP-SSM. Once the CLP/SSM gets confirmation that all locks are either locked or unlocked, it stops running. If one lock never responds, the pump eventually gives up, to save your car battery and the pump's internal parts. There are two wires on the door lock cylinder. The blue one goes to ground when the door locks, the black one goes to ground when it unlocks. What that means is, there will be 5 to 12 volts on each of the wires when not grounded, the line must go close to zero volts to indicate a positive lock/unlock condition. Get in there, measure the voltage on both pins and turn the key from lock to unlock, both should chage state the same - zero on 'true' and 5-12 volts on 'false'.

Fix your door lock.