How do you check the power on a relay switch?
If there is no power, use the lamp to check the input and output terminals on the switch. This will tell you if current is reaching the switch from the battery, and if the switch is passing the current when switched on. If there is power at the relay, use the tester on the relay earth terminal the second thin wire.
How to locate the 4×4 relay location please?
The GEM module is what controls each of these functions so it gets the inputs and then sends the commands. So we need to go to the GEM module and measure the voltage on pin 8 and operate the switch and see that the voltage changes. If not the switch is the issue. If it is, the GEM is the issue. Let me know what you find and we can go from there.
How can you tell if a car relay is working?
If the tester lights, there is power arriving at the relay. If it does not light, check the connection at the battery. If the tester lights, turn on the switch inside the car which controls the component and use the tester again to check for power on the thin wire leading from the switch to the relay.
Where is the ignition relay located in a car?
The ignition relay is often located in the fuse box under the hood. It can also be located in a fuse box under the dashboard inside of the car. The ignition relay’s exact location may differ from vehicle to vehicle depending on the design of the vehicle and the company that manufactured it.
How do I check the starter relay?
Have a helper turn on the ignition switch while you listen to the noise the starter relay makes. If turn on the ignition switch, there’s a single or a series of weak clicks, you will have to test it for electrical resistance. If the sound is a single strong click, you should check the starter relay for voltage drop.
How to check a standard relay?
Steps Download Article Find and remove the relay. The relay should not be tested while it is connected to the circuit. Find the relay characteristics. The relay will have 4 pins; 2 will connect to the control circuit and 2 will connect to the high power load. Confirm the integrity of the relay load connections. Apply power from a test power supply to the control circuit.
Can relays go bad?
Your start relay is bad for sure however the compressor could have caused the relay to go bad. The only problem is that there is no good way to tell if the compressor was the cause for the bad relay. The best way to tell is to replace the relay. I understand what you are saying, it would be bad to spend money on…
What is the purpose of a relay switch on a car?
Relays in general are used to enable a low amperage circuit to switch on or off a higher amperage circuit, like turning on your headlights. If you were to try and directly hook up your headlights to the headlight switch you would exceed the amperage rating of the switch, melt wires, and risk an electrical fire.