Parking Brake Switch Circuit (Camry, Cressida, Mr2, Non-Turbo Pickup, 4Runner & Tercel)

With electrical connector unplugged from cruise control computer, check for continuity between harness connector terminal No. 12 and good body ground, with parking brake applied. If no continuity is present, check for open circuit in wire between terminal No. 12 of computer and terminal No.1 of parking brake switch.If continuity is present, replace cruise control computer.