Ford E3FZ-9345-B Relay

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Some of the electrical accessories in the vehicles which employs the relay includes fuel injection system, horns, starter, fog lamps etc by passing the signals electrically. A relay controls a high current power circuit using a low current control circuit and if the relay is faulty then the required circuit will not function as required. Some of the relays and their locations are easily identified but their functions can be found in the owner's guide. If there is a problem with the relay then the relay can be removed and tested through a relay test procedure or through a dealer service/ repair shop; bad relays are replaced as an assembly. ISO relays are most often used in these vehicles, and their terminals are numbered making the typical connections easy to identify, although there are only two basic terminal arrangements. If the circuit is to be tested, then the wiring diagram of the circuit can well be used to establish proper connections. Two pins are of relay control circuit, used for coupling the relay coil and remaining pins are of the power circuit. When it is supplied with energy the magnetic field thus closes the larger contacts of the power circuit supplying power to the loads. Control circuit is normally held by terminals 85 and 86, and certain connections may be necessary in case the element in question is a diode or resistor. Terminal 30 links to the battery voltage for circuit loads while terminal 87 links to the ground side of the circuit. To check continuity through the relay control coil an ohmmeter should be used and is recommended that testing should be done in two different polarities. Of a resistor value should be same irrespective of whether electrons are passing through it in forward or in reverse direction but in the case of a diode its impedance should be high in one direction rather than the other. Dual direction with infinite resistance calls for relay replacement. After taking out the relay, continuity should be checked at the power circuit terminals; there should be no continuity between terminal 30 and 87 when there is no power. To make the relay click, an individual should link a fused jumper wire between terminal number 86 on the coil and the positive terminal of the battery additionally, use a second jumper wire between terminal number 85 and the ground. With these connections continuity should now be present between terminals 30 and 87. If any of the above tests are not materialized by the relay, then the relay should be replaced.

Some of the electrical accessories in the vehicles which employs the relay includes fuel injection system, horns, starter, fog lamps etc by passing the signals electrically. A relay controls a high current power circuit using a low current control circuit and if the relay is faulty then the required circuit will not function as required. Some of the relays and their locations are easily identified but their functions can be found in the owner's guide. If there is a problem with the relay then the relay can be removed and tested through a relay test procedure or through a dealer service/ repair shop; bad relays are replaced as an assembly. ISO relays are most often used in these vehicles, and their terminals are numbered making the typical connections easy to identify, although there are only two basic terminal arrangements. If the circuit is to be tested, then the wiring diagram of the circuit can well be used to establish proper connections. Two pins are of relay control circuit, used for coupling the relay coil and remaining pins are of the power circuit. When it is supplied with energy the magnetic field thus closes the larger contacts of the power circuit supplying power to the loads. Control circuit is normally held by terminals 85 and 86, and certain connections may be necessary in case the element in question is a diode or resistor. Terminal 30 links to the battery voltage for circuit loads while terminal 87 links to the ground side of the circuit. To check continuity through the relay control coil an ohmmeter should be used and is recommended that testing should be done in two different polarities. Of a resistor value should be same irrespective of whether electrons are passing through it in forward or in reverse direction but in the case of a diode its impedance should be high in one direction rather than the other. Dual direction with infinite resistance calls for relay replacement. After taking out the relay, continuity should be checked at the power circuit terminals; there should be no continuity between terminal 30 and 87 when there is no power. To make the relay click, an individual should link a fused jumper wire between terminal number 86 on the coil and the positive terminal of the battery additionally, use a second jumper wire between terminal number 85 and the ground. With these connections continuity should now be present between terminals 30 and 87. If any of the above tests are not materialized by the relay, then the relay should be replaced.

Several electrical accessories in the vehicle use relays to transmit the electrical signal to the component.

Most relays are marked on the outside to help identify the control and power circuits. Additionally, two of the terminals are typically the relay's control circuit, and the other terminals are the power circuit. The relay's marking and the wiring diagram for the circuit can aid in determining the correct hook-ups for testing.

Relays are used in a vehicle's electrical system to transmit electrical signals to various components, such as the fuel injection system, horns, starter, and fog lamps. They use a low-current control circuit to open and close a high-current power circuit, allowing these components to operate properly.

The various relays are grouped together in several locations.

The various relays are mounted in the engine compartment and several locations throughout the vehicle. The underhood power center, located next to the battery in the engine compartment, contains relays and high-amperage fuses.

If the relay is defective, the component it controls will not operate properly.