Engine management system configuration Pic. 2.38. Configuration of the 1AZ-FE and 2AZ-FE engine management system of the new Camry Table 2.10. Structure of the engine control system 1AZ-FE and 2AZ-FE Table 2.11. Data for maintenance of the engine management...
Location of the main elements of the engine management system Pic. 2.39. Diagram of the control system of the new Camry car: 1 - ignition switch; 2 - oil pressure sensor in the power steering system; 3 – sensor of position of a pedal of management of giving of fuel; 4 – a...
Air flow sensor Pic. 2.42. Air flow sensor: 1 - platinum «heated thread»; 2 - thermistor; 3 - air flow; 4 - intake air temperature sensor The plug-in type air mass sensor allows a portion of the intake air to flow through the sensing...
Camshaft position sensor Pic. 2.44. Camshaft position sensor: 1 – synchronization rotor; 2 - camshaft position sensor; 3 - synchronization rotor (720 ° CA) Camshaft position sensor (pic. 2.44) mounted on the left side of the cylinder head. To...
Throttle position sensor Pic. 2.45. Throttle Position Sensor: 1 - sensor This sensor converts the throttle opening angle into electrical signals with two different characteristics and transmits them to the engine electronic control unit (pic....
Fuel pedal position sensor Pic. 2.46. Fuel pedal position sensor: 1 - sensor This sensor converts the throttle angle into electrical signals with two different characteristics and transmits them to the engine control unit (pic. 2.46). One signal...
EFI system (Electronic fuel injection system) Pic. 2.47. EFI system diagram (Electronic fuel injection system) L type electronic fuel injection system (pic. 2.47) directly detects the intake air mass using hot-wire type air mass sensor. Adopts independent injection...
ETCS-i system (intelligent electric throttle control system) Pic. 2.48. Diagram of the ETCS-i system: 1 - throttle valve; 2 - throttle position sensor; 3 – sensor of position of a pedal of management of giving of fuel; 4 - throttle actuator motor; 5 - air flow sensor; 6 -...
VVT-i system (Intelligent valve timing) Pic. 2.49. Diagram of the VVT-i system VVT-i system (pic. 2.49) designed to control the intake camshaft in a wide range of 50° (angles of rotation of the crankshaft), to ensure that the valve opening or closing timing...
Cooling system fan control Pic. 2.50. Cooling Fan Control Wiring Diagram Unlike the previous electric fan system, the coolant temperature switch has been removed. Instead, a coolant temperature sensor is used to control the fan motor, simplifying...
Diagnostics of the operation of the cooling fan When the ECM detects a failure, the ECM makes a diagnosis and stores the error. In addition, the check engine warning light in the instrument cluster comes on or flashes to inform the driver. The ECM will also store...
Diagnostic Trouble Codes for the Engine Management System Fault codes for 1AZ-FE and 2AZ-FE engines are shown in Table 2.34-2.35. Table 2.34. Diagnostic Trouble Codes for the Engine Management System Notes: «CE» - indicator «CHECK ENGINE» («+» - lights up when a malfunction is...