Power Transistor

Fig. 21 Testing power transistor terminals 1-2:

Fig. 22 Testing power transistor terminals 3-2:

1. Disconnect power transistor connector.
2. Check for current flow when 1.5 volts is applied between terminals 1 and 2, Fig. 21.
3. Check that no current flows when 1.5 volts is applied between power transistor terminals 3 and 2, Fig. 22.