Engine management system I4 Toyota Camry 3 (XV30)

Engine Management System Configuration
Fig. 2.38. Configuration of the engine management system 1AZ-FE and 2AZ-FE of the new Camry Table 2.10. Structure of the control system of engines 1AZ-FE and 2AZ-FE Table 2.11. Engine Management System Maintenance Data...

Location of the main elements of the engine management system
Fig. 2.39. Control system diagram of the new Camry: 1 – ignition switch; 2 – Power steering oil pressure sensor; 3 – fuel pedal position sensor; 4 – instrument cluster; 5 – speed signal Fig. 2.40. Location of the main...

Air flow sensor
Fig. 2.42. Air flow sensor: 1 – platinum "heated thread"; 2 – thermistor; 3 – air flow; 4 – intake air temperature sensor The insert type air flow sensor allows a portion of the intake air to flow through the sensing...

Crankshaft angle sensor
Fig. 2.43. Crankshaft angle sensor: 1 – synchronization rotor; 2 – crankshaft angle sensor; 3-timing rotor (720°C); 4 - missing teeth The crankshaft timing rotor has 34 teeth, 2 teeth are missing. Crankshaft rotation...

Camshaft position sensor
Fig. 2.44. Camshaft position sensor: 1 – synchronization rotor; 2 – camshaft position sensor; 3 – Synchronization rotor (720°CA) The camshaft position sensor (Fig. 2.44) is installed on the left side of the cylinder...

Throttle position sensor
Fig. 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 control unit (Fig. 2.45). One...

Fuel Pedal Position Sensor
Fig. 2.46. Fuel pedal position sensor: 1 – sensor This sensor converts the angle of rotation of the accelerator pedal into electrical signals with two different characteristics and transmits them to the electronic...

EFI system (Electronic Fuel Injection)
Fig. 2.47. EFI system diagram (Electronic fuel injection system) The electronically controlled fuel injection system type L (Fig. 2.47) directly determines the mass of air at the intake using a hot-wire air flow sensor....

ETCS-I System (Intelligent Electric Throttle Control System)
Fig. 2.48. ETCS-i system diagram: 1 – throttle valve; 2 – throttle position sensor; 3 – fuel pedal position sensor; 4 – throttle actuator electric motor; 5 – air flow sensor; 6 – electronic unit In a conventional...

VVT-i (Variable Valve Timing) System
Fig. 2.49. VVT-i system diagram The VVT-i system (Fig. 2.49) is designed to control the intake valve drive camshaft in a wide range of 50° (crankshaft rotation angles), to ensure that the valve opening or closing moment...

Cooling system fan control
Fig. 2.50. Wiring diagram of the cooling system fan control Unlike the previous electric fan system, the coolant temperature sensor switch has been removed. Instead, a coolant temperature sensor is used to control the...

Diagnostics of the cooling system fan operation
When the ECU detects a malfunction, the ECU diagnoses and stores the error. In addition, the check engine warning light in the instrument cluster lights up or flashes to inform the driver. The engine control module will...

Engine Management System Diagnostic Trouble Codes
The fault codes for engines of the 1AZ-FE and 2AZ-FE models are given in Table 2.34-2.35. Table 2.34. Diagnostic trouble codes for the engine management system Notes: "CE" is an indicator "CHECK ENGINE" ("+" – lights up...

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