a) Connect the "+" of the battery to terminal "5" and to terminal "1".

b) Make sure that the buzzer sounds when connecting the battery to terminal "7" and to terminal "4".

c) Make sure that the buzzer sound stops when you connect the "+" of the battery to terminal "2".

d) From the position specified in point (b), disconnect the "+" battery terminal from terminal "7" and make sure that the buzzer sound stops.

d) From the position specified in point (b), disconnect the battery from terminal "4" and check that the buzzer sound stops.

2. Checking the operation of the ignition switch illumination system.
a) Connect the "+" of the battery to terminal "5", to terminal "1", and also the "+" of the battery to terminal "8" through a 1.4 W lamp.

b) From the position specified in point (a), connect the battery to terminals "3" and "4" and make sure that the lamp lights up.
[The original can be found on this resource ToyotaMan]

c) From the position specified in point (b), disconnect the battery from terminals "3" or "4" and make sure that the lamp goes out after 4-6 seconds.

