Step 1 - Master Switch, Inspect Driver's Door Lock Control Switch Continuity

WARNING: This page is about a different car, the 2002 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Driver's Door Lock Control Switch Terminals (Master Switch)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Driver's Door Lock Control Switch Terminal Specifications (Master Switch)

If continuity is not as specified, replace the switch.