Can a bad ignition switch cause a bad relay?
Ignition relay 2: The bottom right terminal should have voltage when the ignition switch is in the ACC and ON positions, if not, the ignition switch is bad. The upper right terminal should be grounded when the ignition switch is in the ON and Start positions, if not, then the Ignition 3 relay/Sunroof relay could be bad or has a bad ground.
What does no power to the fuse panel mean?
No Power to the Fuse Panel: Not Getting any Power to the Fuse Not getting any power to the fuse panel. It is the box inside the car. I think its a 3.3c.U. have the same problem? The fuses inside are fed, in groups, from the larger fuses under the hood, so check those first.
Where are the relays on my ignition switch?
To check the relay’s you need to pull your driver’s side lower dash panel out. Next to your fuse block are 3 relays, 4 if you have rear defrost. The very bottom relay is your Ignition 1 relay, and the one right above it is the Accessory relay and the one above that Ignition 2 relay.
When do you need to troubleshoot a relay?
That is, on a horn, 12V should always be present on 86, and 85 is grounded when the horn button is pressed). If the control side fails either of these tests, you must troubleshoot the wiring. Often it is a problem in whatever is switching the control side on and off.
How do you check for a faulty relay?
The only tool required to check a relay is a multimeter. With the relay removed from the fuse box, the multimeter set to measure DC voltage and the switch in the cab activated, first check to see if there are 12 volts at the 85 position in the fuse box where the relay plugs in (or wherever the relay is located).
Can a fuse be replaced on a relay?
Doing this is also an efficient way to make an emergency repair that will allow you to get the machine back to the yard until the relay can be replaced. Remember, a relay is not a fuse; there will still be a fuse to protect the circuit.
How can you tell if a relay has a blown fuse?
If voltage is able to flow through that side of the relay, move on to the 87 connection point and determine if battery voltage is present there. If it isn’t, that also suggests a blown fuse or circuit breaker. Checking the connection points in the fuse box with a multimeter will confirm if battery voltage is available at the relay terminals.
What happens when a switch is activated on a relay?
Instead, a switch activated by a driver or machine operator simply sends a low-amperage current through a relay, which activates the electromagnet inside it. The magnet then closes a second, independent electrical circuit, allowing high amperage to flow through it directly to a component.