Test No. 11
- Leave CPU 20-pin connector attached. SeeFigure . Measure voltage at terminal 2F (Yellow/Red wire) of CPU 20-pin connector. With door key cylinder turned to unlocked position, voltage should be zero. With door key cylinder in any other position, voltage should be 5 volts.
- If voltage is as specified, replace CPU. If voltage is not as specified, remove trim panel from door of suspect switch. Disconnect door key cylinder switch connector. With door key cylinder turned to unlocked position, check continuity between Yellow/Red and Black wire terminals of door key cylinder switch connector.
- If there is no continuity, replace door key cylinder switch. If there is continuity, check continuity between ground and Black wire terminal of door key cylinder switch connector. If there is no continuity, repair wiring between driver door key cylinder switch and ground. If there is continuity, repair wiring between CPU and driver door key cylinder switch.