The fuse for the power door locks on a 1988 Toyota Camry is located in the fuse box on the driver's side of the dashboard. It is a 15A fuse labeled "PWR DOOR."
Relay
The relay for the power door locks on a 1988 Toyota Camry is located in the relay box, also on the driver's side of the dashboard. It is a small rectangular black box with the part number "90987-02029" printed on it.