The precincts referred to in Section 2.102 shall mean the voting precincts, insofar as they lie within the corporate limits of the City, fixed by the County court for all State and County elections as they exist on the effective date of this Charter. Within three months after their election and qualification, the members of the first Council elected under this Charter shall cause to be made and kept a detailed map of the City showing the boundaries of the Municipal election districts herein described; and each subsequent Council shall cause such map to be kept, maintained and revised as appropriate. The initial such map and any revised such map shall be approved and promulgated by Council in the same manner as provided for the adoption of ordinances.