Test No. 9

Disconnect CPU No. 2 20-pin connector. SeeFigure . Lock both door locks. Check continuity between ground and terminal 1N (Light Green/Black wire) of CPU No. 2 20-pin connector. If continuity exists, replace CPU No. 2. If continuity does not exist, remove trim panel from door of suspect switch. Go to next step for driver-side door. Go to step 4) for passenger-side door.
On driver-side, disconnect door key cylinder switch 4-pin connector. Check continuity between ground and terminal "D" (Black wire) of driver door key cylinder switch connector. If continuity does not exist, repair wiring between driver door key cylinder switch and ground.
If continuity exists, with driver door key cylinder turned to unlocked position, check continuity between terminals "B" (Light Green/Black wire) and "D" (Black wire) of driver door key cylinder switch connector. If continuity does not exist, replace driver door lock cylinder. If continuity exists, repair wiring between driver door key cylinder switch and CPU No. 2.
On passenger-side, disconnect door key cylinder switch 2-pin connector. Check continuity between ground and terminal "B" (Black wire) of passenger door key cylinder switch connector. If continuity does not exist, repair wiring between passenger door key cylinder switch and ground.
If continuity exists, with passenger door key cylinder turned to unlocked position, check continuity between terminals "A" (Light Green/Black wire) and "B" (Black wire) of passenger door key cylinder switch connector. If continuity does not exist, replace passenger door lock cylinder. If continuity exists, repair wiring between passenger door key cylinder switch and CPU No. 2.