Lexus ES250’91 Electronic Control Unit Location and Schematic
The 1991 Lexus ES250 electronic control system consists of sensors which detect various engine conditions, and a ECU which determines the injection volume (timing) based on the signals from the sensors. The various sensors detect the intake air volume, engine rpm, oxygen density in the exhaust gas, coolant temperature, intake air temperature and atmospheric pressure etc. and convert the information into an electrical signal which is sent to the ECU. Based on these signals, the ECU calculates the optimum ignition timing for the current conditions and operates the injectors.
The ECU not only controls the fuel injection timing, but also the self diagnostic function which records the occurrence of a malfunction, ignition timing control, idle rpm control, EGR control, fuel pressure control and fuel pump control. The following diagram shows the 1991 Lexus ES250 electronic control unit parts and locations.
Keywords:
- 2000 honda accord engine diagram,Electronic control unit,1990 toyota corolla engine diagram,2000 Chrysler Concorde Engine Diagram,1990 toyota camry engine diagram,