positively regulates cell surface receptor signaling pathway integrin activation positive regulation of integrin activation positive regulation of integrin activation by cell surface receptor linked signal transduction cell surface receptor linked signal transduction leading to integrin complex activation Any process that activates or increases the frequency, rate, or extent of integrin activation by cell surface receptor linked signal transduction. This can occur by increased affinity of an integrin for its extracellular ligands. cell surface receptor linked signal transduction leading to integrin activation biological_process GO:0033626