Faulty body control module bcm.
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.
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.
Power door lock harness is open or shorted.
Check the fuses and circuit breakers especially if none of the power door locks work.
The b1310 code is a generic obd ii trouble code that detects a circuit malfunction with the power door unlock system.
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.
Power door lock circuit poor electrical connection.
How to troubleshoot electric door locks step 1.
Locate the harness plugged directly into the back of the door lock switch.
A quick pull on this point and the door is unlocked.