900 S Convertible L4-2290cc 2.3L DOHC EFI (1997)
Turning the ignition switch to the ON position activates the control module and grounds pin 27, causing the main relay to operate. The control module
then waits for signals from the crankshaft position sensor.
The principal measured quantity for fuel injection comes from the mass air flow sensor. Substitute functions are provided for all sensors except the
crankshaft position sensor.
The control module remains active for a certain period of time after the ignition switch has been turned to the OFF position. If the engine is restarted
during this period, no pre-injection will take place when the starter motor begins to turn the engine over.
Manual/Automatic
The part number of the control module fitted to cars with a manual gearbox is different to that of the control module fitted to cars with automatic
transmission.