Toyota Complete Electrical System and Diagnosis

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Electrical Fundamental, Electron Theory. Electrical Circuits A complete path, or circuit, is needed before voltage can cause a current flow through resistance to perform work. There are several types of circuits, but all require the same basic components. Electrical Components, Power source on the car. Two power source are used on Toyota vehicles. When the engine is not running or is being started, the battery provides power. When the engine is running, the alternator provides power for the vehicle’s loads and for recharging the battery. Analog Vs Digital Meters. Ultimately your diagnosis of vehicle electrical system problems will come down to using a voltmeter, ammeter, or ohmmeter to pinpoint the exact location of the problem. There are two types of each meter analog and digital. Wire, terminal and connector repair. Conductors, conductors are needed to complete the path for electrical current to flow from the power source to the working devices and back to the power source. Automotive Batteries, General Battery functions, Engine off : battery energy is used to operate the lighting and accessory system. Engine starting : Battery energy is used to operate the starter motor and to provide current for the ignition system during cranking. Engine running : battery energy may be needed when the vehicle’s electrical load requirements exceed the supply from the charging system. Toyota Starting systems, Toyota charging systems, Understanding Toyota wiring, Electrical diagnostic tools, Diagnosing body electrical problems, Semiconductors, Transistors, Computers and logic circuits, Overview of sensors&Actuators, Electronic transmission Operation and Diagnosis. Shift Interlock system, EFI system overview, EFI Air Induction system, EFI Fuel delivery & Injection Controls, EFI Ignition system, Engine controls Input Sensors, Engine controls - ECU Process and output, Engine controls Idle Speed Control, Engine control Diagnosis.

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