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Why is the current still coming through even after its switched off

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  • Cars & Trucks Master
  • 2,210 Answers

Current on what?? We are not crystal ball readers?

Posted on Dec 05, 2014

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Posted on Jan 02, 2017

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1 Answer

VFD model (HY01D523B) No output current?


Try switching two of the connections on the motor. The phasing is off.

Nov 04, 2017 | Cars & Trucks

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My car won't start or even turn over when I turn the key to the ACC,position everything comes on but when I turn it to on every thing goes dead checked starter and battery and fuses. Pont.Bonni.2003


Sounds like a faulty switch. Not much else would be involved.
The switch gets power from the same source in both positions.
The only thing that comes to mind is a faulty switch or a weak connection at the battery. It could be pulling more current in the on position which would cause a weak connection to fail.
But I would bet on the switch first.

Mar 19, 2016 | Cars & Trucks

1 Answer

Why does the current still come through even when switched off


Current to what? Where are you checking? Is this for a vehicle! If so what vehicle?

Dec 05, 2014 | Cars & Trucks

1 Answer

Truck continues to run (engine) even after ignition is turned off


It is running on the alternator current. Check the wiring on the switch and ensure that the connections are right. also on the switch solenoid

Jan 21, 2014 | Mercury Cars & Trucks

1 Answer

2001 Chevy lumina all lights work except the beak lights even after replacing peddle switch


To the best of my knowledge, here is how that works.
There is a "hot" wire that goes from the fuse box to the switch at the brake pedal. There is another wire that is activated when the push button is released by the brake pedal and the electricity then goes back to the brake lights.
Find a person familiar with a test meter, and see if there is current to the brake light switch. If there is, then see if the current is there (when the pedal is pushed) at the other wire. If so, go and remove a brake light bulb and see if current is coming to the rear of the car.
Be blessed.

Dec 14, 2013 | Cars & Trucks

1 Answer

99 GMC Safari AC fuse has constant 12v even with key off.


power goes from htr a/c fuse to selector switch
and power to blower relay part of resistor module
when you plug resistor key off then no blower because htr fuse current coming from ignition switch
hope it helps

Oct 10, 2013 | 1999 GMC Safari

1 Answer

I have a 1994 Buick Road Master 4 Door Saden.When I turn the car off,the interior light won't go off.Doea this sound like a major problem?


What the problem may be is the door switch. Usually, there are switches on each of the doors that are like little plungers. When the doors are opened, the plunger isn't pushed in anymore so it allows current to pass through and the light comes on. If one of the switches is defective, this can cause the light to stay on, or can even cause the light to never come on. The door switches are not usually an expensive part and are simple to replace.

Aug 11, 2013 | Cars & Trucks

1 Answer

Something is draining my battery, there was a short in the headlight switch... i replaced it now my rear parking lights arent coming on i dont know where to start checking the wires..the fuses are fin


The most methodical way to check for wiring shorts is to start at the fuse box. With the ignition turned off, and the key out of the ignition switch, most circuits should be dead. So, using a volt meter or perhaps even an ammeter, pull out each fuse and test whether current is flowing over the circuit. Expect to see current flowing over the fuse that powers your clock and any receiver for keyless entry / remote locking remotes. You might also see current for one or two other systems that are still on "standby" when the car is powered off. However, you shouldn't see current flowing for circuits that could be on but aren't--think dome lights that turn on when a door is opened, or a cigarette lighter outlet that is still active if you plug something into it.
Checking the fuses in this way will show you the system that's got an unexpected drain. I know you suspect something involving the headlight switch, but you might have shorted an unrelated system when you were installing the switch. That's very hard to tell from a physical inspection.
Once you have identified a circuit with unexpected current drain, check your owner's manual or maybe even in the inside of the fuse box cover to see which systems that fuse covers. Unplugging one component at at a time (i.e., radio and 12v outlet are often on the same fuse; dome light is often on the same fuse with other components, etc.), check to see whether the current drain is the same or different. Eventually, you will identify the component that is causing the problem.
At this point, I would suggest charging your battery, disabling your suspected component if you can, and letting things rest a day. Did this fix the battery drain? If so, you're definitely on the right track. If not, you may have found a lesser problem you didn't even know you had.
This is only a starting point for your troubleshooting, but I hope it gets you pointed in the right direction. Good luck!

Mar 09, 2012 | 1990 Plymouth Grand Voyager

2 Answers

Heater fan


not necessarily could be something else try jumping the fan with direct current from battery and see if it runs could be in fan switch or could be a fuse causing the problem if it does not run with direct current from battery then it is the motor.

Aug 27, 2009 | 2005 Pontiac Vibe

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