None of the door locks function in the lock mode. With the lock button depressed, 12V are supplied to the lock relay. The cause of this problem could be:
an open ground connection at the unlock relay contacts.
44%
12
an open circuit in the LF door lock motor armature.
4%
1
an open circuit between the master switch and the lock relay winding.
19%
5
a failed fuse connected to the door lock switches.
