Power Door Lock Circuit

Vehicles have one door unlock system that controls all of the door locks as well as the trunk lock so the b1310 code applies to all of the vehicle s locks.

Power door lock circuit.

Lift the power switch off the door. Faulty body control module bcm. A simple vertical motion from either the knob on the door or the power lock actuator is all that s needed to turn the lock and open the door. Activate the power lock switch to its lock and unlock positions while listening for a distinctive click sound.

The b1310 code is a generic obd ii trouble code that detects a circuit malfunction with the power door unlock system. Power door lock harness is open or shorted. If there are no external door lock switches you will most likely have a vacuum type system or an aftermarket door lock system with relays or have an added actuator that needs relays. How to troubleshoot electric door locks step 1.

What the officer is doing with the metal strip is fishing around until he or she hooks onto the point that the knob and actuator connect to. Locate the harness plugged directly into the back of the door lock switch.