Engine and Emission Control Overall System - System Chart
EF & EC-367flowchartExhaust gas sensor input and its monitor/self-diagnosis function apply to models with catalyzer only. Wastegate valve control function and solenoid valve apply to models with turbocharger only (SR20DET).
System Chart
E.C.C.S. System Chart
Crank angle sensor
Air flow meter
Engine temperature sensor
Exhaust gas sensor*
Ignition switch
Throttle sensor
Neutral switch
Air conditioner switch
Detonation sensor
Battery voltage
Power steering oil pressure switch
Vehicle speed sensor
E.C.C.S. control unit
E.C.C.S. control unit
Fuel injection & mixture ratio control
E.C.C.S. control unit
Ignition timing control
E.C.C.S. control unit
Idle speed control
E.C.C.S. control unit
Air regulator control
E.C.C.S. control unit
Fuel pump control
E.C.C.S. control unit
Exhaust gas sensor monitor & self-diagnosis
E.C.C.S. control unit
Radiator fan control
E.C.C.S. control unit
Acceleration cut control
E.C.C.S. control unit
Wastegate valve control**
Fuel injection & mixture ratio control
Injectors
Ignition timing control
Power transistor
Idle speed control
Auxiliary air control (A.A.C.) valve & F.I.C.D. solenoid valve
Air regulator control
Air regulator
Fuel pump control
Fuel pump relay
Exhaust gas sensor monitor & self-diagnosis
Check engine light (On the instrument panel) or Inspection lamp (On the control unit)
Radiator fan control
Radiator fan relay
Acceleration cut control
Air conditioner relay
Wastegate valve control**
Wastegate valve control solenoid valve**