31 : Start/Stop Switch
The Input Pin is connected to a switch that toggles between
starting and stopping the engine.
If the engine is stopped, the switch is used to enter a starting
state. The ECU also sets a Cranking state that is held until the
engine RPM reaches the Run RPM value, or the switch is released.
(This can be used in functions such as the Driver Warning and
Status Output functions.)
If the engine is running the switch will cause 100% Fuel and
Ignition cuts until zero Engine RPM is reached.
Very nice feature