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Circuits

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How to Buy a Good Quality Fuse
Fuses can be the heart of the vehicle’s power center, keeping everything running correctly by routing electrical power where it belongs. The power center is a vast improvement over the random locations of...

Related questions

Question
Battery replaced, fuel gauge stopped working
Hello. There are a couple of reasons that would cause the fuel gauge to stop working. The most common reason is that the fuel level sending unit has failed and is not accurately reading the fuel level. The fuel level...
Question
Short in wiring
Hi there. Shorts in the wiring are not very common and need to be checked in person. If the circuit consistently blows fuses, do not try to put a bigger fuse in. You will create more problems. If your door...
Question
Brake light circuit warning light illuminated - 1998 BMW 323is
Sometimes, there is just enough corrosion on the end of the bulb to trigger this warning despite the bulbs illuminating correctly. Using some emory cloth or very fine sandpaper, rub the contact end of each of the brake bulbs to...
Question
it will crank but won't start, have replaced and checked so much
The engine will need to be tested to see if you have lost fuel pump operation. Since you replaced the fuel pump, you may have to check to see if the circuit opening relay to the fuel pump and...
Question
Brake/ tail lights
You have a short circuit (possibly to ground) in the wiring for the board OR a fault in another component on the same circuit that is allowing too much current to flow through your sensor board causing it to fail....
Question
What could be cuasing my problems?
Hi there. Rain or condensation can cause havoc with many electrical systems; especially if there are exposed wires or components that are getting wet. This can cause short circuiting situations and gauges to "act weird" like you're describing. As...
Question
Airbag light indicates passenger sensor problem
The sensor for a passenger sitting in this seat is a common failure item yes. The unit is pretty expensive and the fabric of the seat cushion must be removed to access and replace this component unless a new and...
Question
Getting 2 then 4 abs codes, brake shutters, speedo dies and engine slowes when Brake and absolutely lights come on,
You definitely want to start by inspecting the front and rear wheel speed sensors; a failure in these circuits will result in several other problems. Begin by connecting a scanner to see if the Powertrain Control Module (PCM) is registering...
Question
The car with the sensor reference, low circuit and ceased voltage doesn't start
The first thing you want to do is have a certified mechanic unplug the main computer and test the wires coming out of it. Either the wiring is bad, or the computer's connectors have a little condensation and corrosion, which...
Question
fuel volume regulstorcontrol circuit /open
Hi there. The fuel pressure volume regulator control circuit/open requires circuit test be performed. A scanner would help for monitoring the parameter. The fuel pump could be at fault, with little or no fuel pressure, the PCM (powertrain control module)...
Question
I have p0203 dtc injector circuit malfunction
Hello. If this occurred right after the replacement then I would look for a pinched wire. It is common for there to be a wire that is pinched or loose or a bad connection. If everything is fine it may...
Question
Head-up display is backlit on a 2012 Chevy Malibu
The first thing you want to do is, whenever your dimmer switches, check that. A lot of times, dimmer switches burn out and they will do exactly that. You want to pray it's that, because if it's not that, you...
Question
My car is still dying out after replacing the alternator and battery
Remove the negative battery cable from the battery. Get a digital meter and check the voltage from the battery terminal and the battery cable without having the cable touching the terminal. If there is something on in the vehicle with...
Question
Please help me diagnose an electrical drive by wiring
Hello. Generally speaking, most automotive circuits have very low resistance, usually less than 50 ohms. Unless there is a resistor, or sensor that acts as a resistor between the APP wiring terminal and main relay terminal A, then there may...
Question
Can my seat belt pretensioner be repaired, or does it need to be replaced?
Most vehicle manufacturers are very particular about most of their components, but when it comes to supplemental restraint systems (SRSs), such as air bags, pretensioners, and so on, they are most particular. While it has been some time since I've...
Question
Could a problem with the knock sensor keep my car from starting?
Hi there. A problem with the knock sensor or knock sensor circuit can definitely make starting a vehicle more difficult. A knock sensor is used by engineers to help the engine's computer sense possible internal engine failure before it becomes...

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