Hi. I have a central locking issue with my e36 316i 1998 m43. The central locking does not work at all, I have to manual turn key to open only the drivers door. Windows lights all work fine lights even detects when door is open and when all doors are closed. All fuses lights with test light some requires ignition on to light on test light. I removed driver door actuator (still need to test before replacing,dont know how
). No visible tears in wires under both seats and trunk. I dont know how to test ZKEiv module, i know all the pins and what they do but not sure how to test. Please help I have a few complete .pdf wire diagrams i bought would love to share them. All other electronic work 100%. Please point me into the right direction except aftermarket crap
all autoelectricians says aftermarket is cheapest and wont even try looking at it.

