Hi Juan,
I maybe misunderstood the question but I will try to answer, the password reset in an IPS module can be done by this command on the ASA:
hw-module module slot_number password-reset
Resetting the password causes the module to reboot, consequently IPS services are not available during this reboot. ASA appliance however should not reboot. To reset the password from the ASA must be running 7.2.2 or later. The default password will be cisco and it will ask you to change it in the first login.
Hope that was the question =)
Mariana