Hot answers tagged

14

Instead of Ohms checks of fuses I check for voltage with power on. Set your voltmeter to DC volts with the negative lead on the battery negative connector. With the positive lead test both sides of the fuse. If good it will read battery voltage on both sides. Most fuses have exposed metal tabs on both sides of the actual fuse section for this purpose. On ...


9

The fuse connection legs are through bolted on many of these higher amp rated fuses. To find out remove the black plastic cover below the fuses. If you find small nuts then they are the bolted in type. BTW if the fuse links under the clear plastic windows look OK then they do not need to be replaced.


8

Traced this problem to a fuse under the dashboard, located in the middle horizontal row right most fuse. Turns out this fuse is the indicator fuse and when this fuse is blown the indicators won't work but the hazard lights still work. This was the solution in my specific instance but there are two other possible faults which could be to blame for indicators ...


8

To track down and troubleshoot electrical issues, you will almost certainly need a multimeter (also known as a Volt-Ohm meter) - digital ones are best, like the one illustrated below (from Wikipedia) You can get cheap ones, which are fine for most automotive stuff, or much more expensive ones with all sorts of clever features. The two most useful things ...


7

Tools Digital Multimiter Voltage, Resistance, continuity settings Automotive specific DMM's are typically the same device but may have a few extra features (Duty Cycle, RPM) CAUTION: Certain modes on the multimeter can cause damage to the device or your car if improperly hooked up. Never connect the DMM to a circuit in parallel when it is on the ampere ...


6

As I understand it, there was a fundamental redesign in the cars from around 2002 onwards. Unfortunately that doesn't help you but I wonder if it is possible to retrofit the later model fuse box. Thank you for the picture, this has cleared things up. The fuse that has melted in your unit is S177 which is wired to the alternator. Apparently as the cable ...


5

The parking lamp/headlight switch applies power or ground so the circuit would be open if you were testing with the switch off. Same with the turn signals. The tail lights are on separate circuits. They don't share a ground. Does the car have an aftermarket trailer harness? If not your going to have to remove panels and visually inspect the harness for ...


5

They are typically on the same fuse. Charging outlet should be listed as a cigarette lighter.


5

It could be a blown fuse as you suggest. It could also be that the motor isn't receiving current due to a break in the wiring. The multimeter should come in handy to verify this - check to confirm that a voltage drop registers across the pump motor terminals when the wiper stalk is engaged. It may also be that the motor in the pump has gone bad - check for ...


4

Tail light fuse will be third from the left along the top row. As for a concise fuse diagram with full descriptions... Will that do?


4

Replace the wire between the alternator and the fuse box. It's called the alternator harness, but I haven't found it for sale online. It is just a simple (large) wire with two ring connectors crimped on the ends. It tends to get a break in the wire near the fuse box that then arcs and overheats; this is not a problem with a short otherwise the fuse ...


4

If you can get to both sides of the fuse, see if you have power on each side. If you want to make sure, remove the battery terminal, and use an ohmmeter to measure the resistance between the battery terminal and the other side of the fuse. Should be zero or close to it. If so, it is good. With this type of fuse, when it blows, there is usually a large gap ...


3

Cars commonly multiplex their electrical systems. This means that multiple things are fed from the same fuse. The best way to identify what is on the fuse is to check the wiring diagrams. Once all the possible sources from the fuse have been identified the fault can be systematically narrowed down. First look at components that come on and off, this is the ...


3

From what I understand and how I've seen it used. If the ignition is off it uses the residual heat from the engine to warm the car. In order to validate my claim, turn your car off and hit the button. You may need to try it with the key in it. Interested if I'm correct. Please follow up. :-)


3

You could try unplugging each lock switch one at a time(or all at once) and test to see if a switch is shorting. If the car has an aftermarket security system you could try removing it from the door lock system. The wire loom that run into the doors can also be suspect. You should probably have a locksmith look at your key and lock cylinder so that you ...


3

I had to deal with this problem some years ago on a VW. What I noticed is that the fusible link ran slack, causing the connection to arc and as a result burnt out the plastic housing below. I couldn't get a fuse box so I by passed the burnt area, had a link fabricated and secured it with a bolt and nut.


3

Sounds like a bad ignition switch for the following reasons: It could be an incomplete starter motor circuit, but this will not explain why the dashboard lights are not turning on, which indicates that the ignition switch is not going into the 'On' position. Independent of the starter motor, the fuel pump relay should also "click" when the key in the ...


2

I would get some insulated crimp butt connectors and a good quality crimp tool to ensure you get a good connection. Ensure you use wire thick enough to match the existing wire. Like these - http://uk.rs-online.com/web/p/crimp-butt-splice-terminals/0534648/ and a tool similar to this - http://uk.rs-online.com/web/p/cable-crimpers/4992313/ If you ...


2

Shorts in this system are almost always in the rear of the vehicle. Remove all the brake bulbs, including the center light and inspect the sockets. Carefully inspect anywhere the wires move, like at the trunk lid hinge. Next look for any added trailer wiring connectors, if any disconnect them. After each part is disconnected retest. A short finder tool saves ...


2

Do you hear a click of the brake lock disengagement from the steering column when you depress the brake pedal, with the key in, engine on? If you don't, it could be either faulty wiring to the disengagement solenoid, or the solenoid itself failed (something rather rare, but I have fixed before). Depending on your comfort level, you could: Check the brake ...


2

As Zaid said, start with crasic's excellent answer in: How do you test analogue electrical circuits? . For your situation specifically, I would introduce a small voltage between the fuse holder of the fuse that is blowing, and ground. Use a continuity noise generator or a light bulb so you can hear or see your progress. Then, get into that bundle of wires ...


2

Unfortunately, simply unplugging a fuse isn't going to stop a determined thief, as they often tow cars away rather than going to the noise and effort of trying to start them... I'd suggest some kind of physical lock, either on the steering wheel, gear lever/handbrake, or similar - they often act as a visual deterrent to casual thieves as well, who will go ...


2

I'd like to add to Nick's answer and mention a Circuit Tester if you need to simply test the circuit for power.


2

If it was me, I'd wire the live supply to the multimedia system to the switched live (ie the 12V when the key is on) and not always live (direct to the battery) That is a simple fix. It does seem a bit strange that the current draw from the multimedia system is so high when off, though, so you may want to check the system and see if it is behaving ...


2

In the second and third images, starting at the top and working to the right: Top row - Fans Windows Sun roof Middle row - Antilock Brakes (ABS) Radio Brake lights Fog lights (?) Window Window Coupe Console - someone says it is "Consumer for clock / radio" (?) Horn Wiper ALIM/UCH - manual says "common power" (?) Third row - Interior lights ...


2

2 possible causes I can think of. Dimmer switch had been turned all the way down or the dimmer part of the switch is bad. You can still turn on the dome light even when the dimmer part is inoperative. Fuse for instrument Cluster is bad, I think it is Fuse #15 (7.5amp) on that model. Interior fuse panel.


1

If you are going to fix this yourself it sounds a lot like either the wiring or switches for the door lock system is at fault. The door lock is just a solenoid (a relay like device except instead of changing electrical contacts it moves a plunger) so it's getting toggled somehow when you don't want it to. So, something is applying power to the solenoid on a ...


1

Try circuit #34 or #35. You don't necessarily have to do this in the vehicles fusebox. For instance; when I used to install a lot of Alpine audio/visual equipment, their ceiling-mounted LCD/DVD players had LEDs which required wiring up separately. So I would splice their power-feed directly into (out of) the original interior light's pre-existing wiring ...


1

We wired our LED's to interior light via switch on door as interior light stay's on for a while until car is locked.


1

On a modern car, the ECUs (electronic control units) will be deciding when different functions will work. For example, it knows to switch power to the window circuits until you open and close the door. The ECU could be controlling a relay that switches the power to the windows off when you shut the door. The fuse that you are connecting to will be before ...



Only top voted, non community-wiki answers of a minimum length are eligible