Mitochondrial co-chaperone which forms a complex with prohibitins to regulate cardiolipin remodeling (By similarity). May be a component of the PAM complex, a complex required for the translocation of transit peptide-containing proteins from the inner membrane into the mitochondrial matrix in an ATP-dependent manner. May act as a co-chaperone that stimulate the ATP-dependent activity (By similarity). Interacts with PHB2; the interaction associates DNAJC19 with the prohibitin complex. Interacts with TIMM16/PAM16 (By similarity). May be a component of the PAM complex at least composed of a mitochondrial HSP70 protein, GRPEL1 or GRPEL2, TIMM44, TIMM16/PAM16 and TIMM14/DNAJC19 (By similarity). Ubiquitously expressed. The disease is caused by variants affecting the gene represented in this entry. Belongs to the TIM14 family.