Left rear wheel well inside the trunk. Probably yellow in color. Small 3x3 plastic box that house a small circuit board.
Don't think the 1989 Toyota Camry came with an airbag system.
Usually at the upper end of the brake pedal under dash
where is the rear defogger relay located in a Toyota Camry
The 1989 Toyota Camry water pump is located on the front of the engine. You can follow the top radiator hose directly to the water pump.
top rad hose at engine
The 1989 Toyota Camry parking light fuse can be found in the fuse box. The parking light fuse will be in the first column, second from the bottom.
That year did not have a cam sensor.
That year did not have a crank sensor.
The 1989 Chevrolet 350 cubic inch engine coolant sensor is located on the front of the engine. The coolant sensor will be near the thermostat housing.
The IAT sensor is located on the air box. Team Clockwork Performance
The oxygen sensor on a 1989 Chevy Celebrity is located in the rear exhaust manifold on top about the center.
It is located on the side of the Engine block.