Why is my Fuse dead but my circuit breaker is not tripped?
However, in some cases the breaker or fuse may seem fine, and even if you reset the circuit breaker the circuit is still dead. In those cases the culprit might be a GFCI outlet that has tripped.
What causes a tripped fuse on a GFCI?
Replace the blown fuse with one of the same type and amperage. Pro tip: In most cases, a tripped circuit breaker is caused by a temporary overload on the circuit or a short circuit in some device plugged into the circuit. But in rare cases, a loose wire in an electrical box could be causing the problem.
Is the ignition switch part of the PCM?
The ignition switch now talks to the body control module (BCM) and it’s the BCM that initiates one of two relays. The second relay, the more important of the two, is controlled by the powertrain control module (PCM).
How many fuses do you need to start a GM car?
But then you must have two good fuses in the starting circuit, two good relays, several good fuses to the BCM, good fuses to the PCM, and good grounds all around. Click on the image here to pull up a PDF of a typical GM starting system wiring diagram.
What happens when an ECM power relay goes dead?
If the relay shorts it can leave power on to the computer, even when the vehicle is turned off. This will place a parasitic drain on the battery, which will eventually cause it to go dead. The ECM power relay is one of the most important relays as it provides power for the vehicle’s computer system.
What happens if the ECM fails on a car?
The fuel and ignition systems, as well as several other engine management functions, of many vehicles are controlled by the ECM. If the ECM or it’s relay fail, the entire engine management system will be left without power and will not function as a result.
What does ECM stand for in engine management?
The ECM, or electronic control module, is the computer responsible for controlling all of the engine management functions.
Is there a fuse in a Canon printer?
According to Canon (after I asked), there is no fuse inside the unit that might have blown. Does this problem sound familiar to anyone? The cost of taking the printer to a repair shop would cost more than the printer itself, yet finding a decent replacement would be very difficult if not impossible. Help! TIA.
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.
What to do when there is power loss to a circuit?
When there is power loss to a circuit the first thing to check is your breaker panel. See if you have a tripped breaker. If there are no breakers in the trip position, check the panel schedule (hopefully the panel has been labelled and is accurate, as it should be), and find the correct breaker.
Can a fuse be turned off with zero volts?
If you find twelve volts on both test points, that fuse is good. If you find zero volts on both sides, that circuit is turned off. You are looking for any fuse that has twelve volts on one test point and zero volts on the other one.
However, in some cases the breaker or fuse may seem fine, and even if you reset the circuit breaker the circuit is still dead. In those cases the culprit might be a GFCI outlet that has tripped.
When there is power loss to a circuit the first thing to check is your breaker panel. See if you have a tripped breaker. If there are no breakers in the trip position, check the panel schedule (hopefully the panel has been labelled and is accurate, as it should be), and find the correct breaker.
Why is there no power in my circuit?
The client checked the breaker, didn’t appear to be tripped, but he reset it anyway. Still no power. Being a bit of a handyman, and with some experience in the electrical trade, he then connected the wire to the adjacent breaker, and the circuit was working! Is the Breaker the Problem or the Breaker Position?
Why does my Jeep not start when there is no power?
There is a wire that goes to the power distribution box on the finder close to the battery, if you don’t have power to it nothing will work. Could be a dirty connection there or there is also a large main fuse in the PDB that supplies power to all circuits in the jeep. I would check the fuse box for problems.