So from my understanding of the manual Skeem communicates to the BCM the BCM then communicates to the central locking pump? Basically pressing the button on the unlock/lock dash, as well as the key fob does absolute nothing. So I should start to troubleshoot why the BCM isnt communicating to the locking pump? Also from what im getting from the manual, the locking unit also communicates if the L/R door are ajar? I never noticed a door ajar light on my car while it was running etc. Or should I be starting at page 1256 of the service manual relating to the power going to the Central locking unit.