20 ES300 — NEW FEATURES Construction The configuration of the engine control system in the ’99 ES300’s 1MZ-FE engine is as shown in the following chart. SENSORS ACTUATORS CRANKSHAFT POSITION SENSOR • Engine Speed Signal • Crankshaft Angle Signal NE VV1 VVT SENSORS • Camshaft Position Signal VV2 ESA IGT1~ IGT6 ENGINE COOLANT TEMP. SENSOR THW IGF IGNITION COIL with IGNITER SPARK PLUGS THA INTAKE AIR TEMP.
SENSOR VVT-i THROTTLE POSITION SENSOR • Throttle Position Signal VTA1 OC1 CAMSHAFT TIMING OIL CONTROL VALVE RH OC2 CAMSHAFT TIMING OIL CONTROL VALVE LH ECM IGNITION SWITCH • Starting Signal • Ignition Signal STA IGSW RSO IAC CONTROL VALVE COMBINATION METER • Vehicle Speed Signal SPD ACIS ACIS ACI1 VSVs AFR AIR-FUEL RATIO SENSOR (Bank 1, Sensor 1) FC FUEL PUMP CONTROL AFL CIRCUIT OPENING RELAY AIR-FUEL RATIO SENSOR (Bank 2, Sensor 1) AIR FUEL RATIO SENSOR HEATER CONTROL HEATED OXYGEN SENSOR (Bank 1, Sensor 2) OXS HAFR AIR FUEL RATIO SENSOR HEATER (Bank 1, Sensor 1) HAFL KNKR AIR FUEL RATIO SENSOR HEATER (Bank 2, Sensor 1) KNOCK SENSORS KNKL AIR FUEL RATIO SENSOR HEATER RELAY PARK/NEUTRAL POSITION SWITCH • Neutral Start Signal NSW R, D, 2, L MREL EFI MAIN RELAY (Continued) MASS AIR FLOW METER VG #10 SFI No.
1 INJECTOR No. 2 INJECTOR No. 3 INJECTOR No. 4 INJECTOR No. 5 INJECTOR No. 6 INJECTOR #20 #30 #40 #50 #60