Chrysler 56007078AB Relay And Bracket

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The wiring diagram shows the routing and exact location of the input voltages for the relays.

The fuel injection system, horns, starter, and fog lamps are examples of electrical accessories in a vehicle that use relays.

If a relay is defective, the component it is connected to will not operate properly.

If a relay is defective, the component won't operate properly.

Use an ohmmeter to check continuity through the relay control coil, and if the relay contains a resistor or diode, check the resistance in the appropriate directions. Remove the relay from the vehicle and use the ohmmeter to check for continuity between the relay power circuit terminals. There should be no continuity between terminal 30 and 87 with the relay deenergized. Connect a fused jumper wire to terminal 86 and the positive battery terminal, and another jumper wire between terminal 85 and ground. When the connections are made, the relay should click. With the jumper wires connected, check for continuity between the power circuit terminals. If the relay fails any of the tests, it should be replaced.

Two of the terminals are the relay control circuit and connect to the relay coil, while the other terminals are the power circuit. When the relay is energized, the coil creates a magnetic field that closes the larger contacts of the power circuit to provide power to the circuit loads.