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The positive terminal on the battery grounded out and there is no power to anything and no fuses are blown how can you locate fusible links or what else could have happened?
Wiki User
∙ 18y ago
One of the first things I would do is check the fuse boxes to make sure that the appropriate values for the fuses were being used. The wire may have become the fuse if the value for the fuse was to high to handle the short. This may lead you to the circuit on which the problem is on. Whether or not the values are correct, you need to identify the circuit on which there is a short or open. Get a schematic through chilton or haynes or dealer and a good place to start is at the car's computer harness. Do not push to hard when poking with an ohmmeter. Turn on the audible beep for an easy way to test each circuit. Put on end on the computer harness. One of the many inputs to the harness will relate to a circuit. Now find the other end of the signal (say the Map sensor) and unconnect it from the sensor and match the color of the wiring (reference the schematic). check for continuity. Now check for continuity from the same wire on the harness to ground. Do this point by point. If you do not understand schematics and hot and ground symbols, you will need to learn them. Look for shorts and opens that should not be there. you should get continuity along the wire. if none, it may be open. if there is continuity to ground, you must ask the question "Should there be?" Only the schematic will tell you. This will diagnose the emmissions circuit. there is also other circuits that you can check by using the fuse boxes as one end an finding another end through the schematic that you can check for continuity. The best way to do this is look at the schematic and find the furthest run of wire from one point to another where you can check for continuity. and if the test fails, you know the problem has to be somewhere between that point a and b. work your way forward to the computer harness or fuse box and you probably will find your problem. Lets say its an open between a and b, you work closer to your harness/fuse box and eventually become continuous. The problem area is obviously between the last point checked and this one. GOOD LUCK!
Wiki User
∙ 18y ago
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How do you wire a starter on a 90 hp Johnson?
The starter should have two wires. The positive wire goes to the positive terminal on the battery. The ground wire can be grounded to anything that is metal.
Where is the positive and negative terminal of the overhead wire for local trains?
One terminal is the overhead wire, and the other terminal is the track, which is grounded.
Why positive terminal of megger is grounded during IR measurement of electrical equipments?
during ir test we are grounding the positive terminal to avoid osmosis effect.
Which terminal of the VW Golf battery is grounded is it the positive or the negative terminal?
grounding is always neg on a 12 volt american car. I only know bulldozers that reverse it. hope that helps you out.
Which terminal of battery is grounded in vehicles and why?
Negative terminal is grounded to the vehicle. Because the system is a negative ground system. Electricity will not flow unless it has a path to ground.
Why the current not flowing through the wire when one end is connected to the positive terminal and the other end is let open why the positive potential does not affect the electrons in the wire?
since it is not grounded ,it does not accept the flow of current
What is positive about batteries?
One terminal is positive and the other terminal is negative. The positive terminal is slightly larger.
Why positive terminal grounded to make the supply negative?
A DC circuit, of course, does not need to be grounded. It just needs a path from the negative to the positive (the actual flow of electrons). One can often simplify the wiring by using a common "ground" bus which might include a car's chassis for example. If the negative terminal is grounded, then everything that is not "ground" would be positive. Likewise, if the positive terminal is grounded, then everything that is not "ground" is negative. Since you are looking at return paths... you could potentially have 2 batteries, one that is negative grounded and one that is positive grounded. Consider two 12 volt batteries: +12V(a) -- (-12)V(b) -- GROUND -- (+12V)(c) -- (-12V)(d) If you connect (d) to either (b),(c), or Ground, one would have a 12V difference with (d) being negative. If you connect (a) to either (b), (c), or Ground, then one would have a 12V difference with (a) being positive. If you connect (a) to (d) then one would have a 24V difference with (a) still positive and (d) still being negative. One note... When Steel is given a negative potential (charge), it corrodes less than when it is given a positive potential (charge). This is the reason why negative ground is almost universally used on automobiles.
What is the difference between a positive terminal and negative terminal of a battery?
The positive + terminal is slightly larger.
Why is one terminal of a three-phase AC generator grounded?
only neutral point is gronded not a terminal ,
How do you know positive and negative terminals?
Look for a + by the positive terminal and a - by the negative terminal, or red for positive, black for negative. Some batteries have the positive terminal protruding and the negative terminal flat. Or you can get a meter that will tell you which is which,
Why the dc average voltage is having negative value?
Voltage is synonymous with 'potential difference', and cannot have a positive or negative value (in the sense of charge). So what you are describing is 'potential', which can. So, for example, a battery whose positive terminal is earthed or grounded will indicate a negative potential if a voltmeter is connected between earth and its negative terminal.
