Power Door Locks Lock Then Unlock

The body controller is a computer in your car.

Power door locks lock then unlock.

Since the doors unlock that tells you that the wiring all the way from door lock relays in the left ip electrical center to the door lock actuators is a ok. Using either my alarm remote or the central locking button both of the door locks on my 88 will lock but then they immediately unlock. Each one gets stuck freezes in succession after 2 to 3 lock and unlocks. The only way the locks will stay locked is if i manually turn the lock knob on the doors.

You should see the voltage polarity toggle with each switch activation. Then use your test light or digital meter to check for power and ground at the connector when you operate the lock unlock switch. Power door locks lock then unlock. Use the hook to press down on either the unlock button or the window s down button whichever is within reach.

By a signal from a control center in some cars that have power door locks the lock unlock switch actually sends power to the actuators that unlock the door. Maneuver the hook to the console that houses the controls for the power windows and locks. But in more complicated systems that have several ways to lock and unlock the doors the body controller decides when to do the unlocking. Because both door lock switches have the same problem and work in unlock mode it is also unlikely to be a switch problem.

However if no buttons are pressed for 30 60 seconds all locks work again for the first couple unlocks locks. Door lock systems operate the actuator by toggling positive negative voltage to the actuator. It s like it thinks one of the doors is open maybe. The window down button will not work for all cars as most require the key be in the on position for windows to operate.

Unplug the door lock actuator electrical connector.