Civic L4-1590cc 1.6L SOHC (VTEC) (1992)
8.
Alternator Control:
The system controls the voltage generated by the alternator in accordance with the electric load and drive mode. This reduces the engine load to
improve the fuel economy.
ECU BACK-UP FUNCTIONS:
1.
Fail Safe Function:
When an abnormality occurs in the signal from a sensor, the ECU ignores that signal and assumes a pre-programmed value that allows the engine
to continue to run.
2.
Back-Up Function:
When an abnormality occurs in the ECU itself, the injectors are controlled by a back-up circuit independent of the system in order to permit
normal driving.
3.
Self-Diagnosis Function:
When the ignition is initially turned on, the ECU supplies ground for the "CHECK ENGINE" warning light for about 2 seconds. When an
abnormality occurs in a signal from a sensor, the ECU lights the "CHECK ENGINE" warning light, and stores the failure code in the erasable
memory.