Possible Causes
FUSED REAR WINDOW DEFOGGER RELAY OUTPUT CKT SHORTED TO GROUND
FUSE BLOCK FUSE #17
FUSED REAR WINDOW DEFOGGER RELAY OUTPUT CKT OPEN
DEFOGGER SWITCH
FUSED REAR WINDOW DEFOGGER RELAY OUTPUT CKT SHORTED TO GROUND
FUSE BLOCK FUSE #17
FUSED REAR WINDOW DEFOGGER RELAY OUTPUT CKT OPEN
DEFOGGER SWITCH