Yes, you can do a computer diagnostic on your Camry. For the 88 to 91 Camry there is a diagnostic plug near the drivers side strut tower, under the hood. When you connect the E1 and TE1 terminals and...
There are many types of computer diagnostic tests. Here are some websites you might want to check out... http://www.tacktech.com/display.cfm?ttid=287 (Hard Drive Diagnostics)...