How can I see if a Linux Embedded system authenticates with PAM or passwd only?

I cross compiled Linux-PAM and OpenLDAP for my linux embedded system (with ARM architecture) and copied the compiled files and folders into it. I create a /etc/pam.d/ folder and i put inside of it the files common-auth, common-password and common-account. How can i make sure it authenticates with PAM? For example from the command line when I digit: su user1 how can I make sure the system authenticate only with passwd or with PAM? This are the files I put inside the /etc/pam.d folder: common-account: account sufficient /usr/lib/security/pam_ldap.so account required /lib/security/pam_unix.so try_first_pass common-auth: auth sufficient /usr/lib/security/pam_ldap.so auth required /lib/security/pam_unix.so nullok_secure try_first_pass common-password: password sufficient /usr/lib/security/pam_ldap.so password required /lib/security/pam_unix.so nullok obscure min=4 max=8 md5 try_first_pass Thanks for your help.