a) Using an ohmmeter, check the resistance between the terminals.
Nominal resistance between terminals (at 20°C):
- "g" and "e" - 6.9-7.5 Ohm
- "+B" and "G" - infinity

b) Apply battery voltage to terminals "g" and "e" and check for battery voltage at terminals "+B" and "G".
(The original source is located on the website: ToyotaMAN.ru)
