Where is the fuel pump relay located in a 2008 Toyota Corolla?
1 Answers
The fuel pump relay in a 2008 Toyota Corolla is located in the large fuse box on the left side of the engine compartment. When the relay is operating, the electromagnet is energized, pulling the armature down to make contact between D and E, thereby closing the working circuit. When the electromagnet is de-energized, it loses its magnetism, and the spring pulls the armature back up, cutting off the working circuit. Working principle of the fuel pump relay: When a certain voltage or current is applied to both ends of the electromagnetic relay coil, the magnetic flux generated by the coil passes through the magnetic circuit composed of the iron core, yoke, armature, and working air gap of the magnetic circuit. Under the action of the magnetic field, the armature is attracted to the pole face of the iron core, thereby pushing the normally closed contacts to open and the normally open contacts to close. When the voltage or current at both ends of the coil falls below a certain value, and the mechanical counterforce exceeds the electromagnetic attraction, the armature returns to its initial state, causing the normally open contacts to open and the normally closed contacts to close. Composition of the relay: The relay can be viewed as an assembly consisting of two parts: the control circuit where the coil operates and the main circuit where the contacts operate.