cheking the daignose troublshoots device located on 1990 Volvo 760

im looking for my volvo 760 model 1989 diagnose troubleshoots device place in the car

Asked by for the 1990 Volvo 760
In the engine compartment, looks like this:
1 more answer
located in the center console on the right side of thr emergency brake level. there is a pop up tab. use a flat head screwdriver to pop this tab out