This allows you to test ECU outputs. Note that not all ECUs have circuitry for all outputs.
A/C output - engages the AC clutch.
VTEC spool valve - activates the VTEC spool valve. The engine must be running for this test to operate. Note that the VTEC spool will lower oil pressure, so 3000 rpm or higher is recommended for this test.
Fuel pump - runs the fuel pump with the engine off. This can be used to drain the fuel tank but be aware that most fuel pumps do not like running without fuel running through them.
PCS - activates the purge valve. The invert setting from the parameters is used.
IAB - activates the secondary intake runner output. The invert setting from the parameters is used.
Radiator fan - engages the radiator fan clutch output.
ALTC - activates the alternator control output.
A10 - activates the spare output on pin A10.
Boost control - outputs a PWM waveform for boost control. The PWM frequency and duty can be set.