Indicator Test
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.
Connect fused jumper wire between center integration panel assembly terminals B1 and B3. See Fig 1. Apply battery positive to center integration panel assembly terminal A13 and battery negative to terminal A1. Indicator should illuminate. If indicator does not illuminate, replace indicator.