SECU-3i installation manual
SECU-3i installation manual includes following sections:
External connectors of unit
Different wiring diagrams (examples)
More complete wiring examples you can find here.
Connecting power supply relay
It is easy to connect either high or low voltage tachometer to SECU-3i unit. How to connect low voltage tachometer is shown on the next picture:
For connecting of high voltage tachometer, you need to additionally attach a coil from the automobile relay between TACH_O output and 12V (use supply of ignition coils):
Connecting IAC valve
Connecting stepper IAC valve:
Connecting PWM IAC valve with single coil:
Connecting PWM IAC valve with twin coils:
How to start a boot loader and reset EEPROM
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