Why does my ECM 1 fuse keep blowing?

Disconnected some wiring harness (Pink/Blk wires) and turn key to “On position” . I noticed clicks when I turned the key to “OFF” postion and ECM1 fuse blew again. Whatever charge that blew the fuse came from the PWR/TRN relay. Re-connected all the plug/harness for Pink/Blk wires.

What does p018c code mean on ECM1 fuse?

Now when turning the key (No crank) and ECM1 fuse blows, it shows P018C code. I did some search and some people report being “Fuel Injection Pressure Sensor” malfuction and other saying “Fuel Tank Pressure Sensor”.

Why does my ECM 1 make a clicking noise?

The voltage or amps surge, causing the ECM 1’s fuse to blow. When the starter fails you will hear a clicking noise or the engine will be hard to start. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

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.

If the wires leading to the O2 sensor rub against the exhaust, it creates a ground; once the O2 sensor is grounded, the fuse to the ECM 1 blows. The O2 sensor must be installed in a different place to ensure the wires do not short-circuit.

What should I do if my car fuse keeps blowing?

The important thing is to understand what is causing the fuse to keep blowing. The simple fix is often replacing the blown fuse and test the car again. If the fuse does not blow, it might be an easy fix because there was a power surge in the system.

What causes a fuel pump fuse to blow?

When the fuel pump begins to fail it overheats, causing it to drain more amperage (amp); if the amps exceed the amount of amps the ECM 1 fuse allows, the fuse will blow. Replacing the fuel pump should correct this problem. The ECM 1 operates via voltage sent from the battery.

What should I do if I Blew my Fuse?

The Fix: Make sure the faulty device is unplugged and there is no damage to the outlet. First, test the circuit. Then check for any damage on or around the electrical panel. If you see any damage, call an electrician before doing anything else with it. If there is none, flip the breaker switch back to its operating position.

What does it mean when a fuse is blown?

Yet people commonly use the expression “blown fuse” to describe just about any unexpected electricity-related occurrence, especially one involving a loss of power. A “blown fuse” can mean many different things–several of which have little to do with actual fuses.

How often do you get a blown fuse?

Most people probably have experienced a blown fuse at one time or another. Someone always knows what to do when this happens. If you’re a homeowner, that person probably is you. Blown fuses are a common occurrence.

What happens to a fuse when it melts?

A true fuse typically consists of a piece of metal, most commonly an encased wire, that actually melts when overheated. This is what stops the fault (aka “short” or “power surge”). The destroyed fuse must then be replaced with a new one.

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.

Can a blown fuse be switched back on?

The breakers reset and can be “switched back on”–so there is no need to replace anything. Much of the time, it’s technically inaccurate to refer to a “blown fuse,” so in this article, we’ll offer you some new concepts and vocabulary to describe your various electrical concerns.

What causes a circuit breaker to blow a fuse?

Any faulty wiring or connected parts risk a power fault (surge), which trips a circuit (or blows a fuse). So, again, the problem is not that the circuit breaker (or fuse) didn’t do its job but rather that there was faulty equipment.

What should I do if my O2 sensor is not working?

Then clear the codes. Some computer systems will shut the O 2 heater circuit off until the codes are cleared. Now, with the ignition switch off, plug the test harness with the light into the vehicle’s O 2 sensor harness connection. The light should remain off until the engine is started.

When to reset the ECU after changing an O2 sensor?

Sometimes an O2 sensor fails, and you need to replace it. Once you’ve replaced your vehicle’s O2 sensor, you’ll need to reset the ECU so it can properly gather information from the new O2 sensor.

What are the problems with a 2004 GMC Envoy?

Top 2004 GMC Envoy Problems 1 Air Compressor for Rear Air Springs May Fail 470 people have reported this 227 2 Fuel Level Sensor Failure 378 people have reported this 214 3 AC Blower Inop Due to Failed Resistor 272 people have reported this 121 4 CD Player In Radio May Fail 175 people have reported this 85

Why is my BCM not working on my car?

Some of the possible causes of a malfunctioning BCM include the clock on the radio not keeping its time and reverting to 12:00 when the vehicle is turned off, then turned on again. Check to make sure all the electronic devices are working properly. If you use a key fob to lock and unlock the doors, the function may not work.

What to do if your BCM is on Blink?

Check the fuse box if you suspect that your vehicle’s BCM is on the blink. Make sure all the fuses are in good shape. If any are burnt out, replace them immediately.

Why does the fuse keep blowing on my Silverado?

Good evening everyone. I am having an issue with the IS LPS 10A fuse, #17, 2009 Silverado, in the interior fuse box, it keeps blowing. Here is the background, I just installed a new radio and what I discovered was my dash lights no longer worked, my dimmer switch still functions as do my brake and headlights, gear light.

Can a faulty brake light switch cause a fuse to blow?

Might be worth a look if thats blowing your fuse also. 1985zx900 wrote: I have heard that a faulty brake light switch will cause your dash lights to go out sometimes. Might be worth a look if thats blowing your fuse also.

Where is the fuse box on a car?

The fuse box is located on the passenger side next to the battery. When your vehicle has properly warmed up then you want to turn your vehicle back off and unplug both fuses, cut power by disconnecting the battery .

Is there a problem with the ECM B fuse?

ECM B fuse blowing 98 Chevy GMC problem found. No start 5.7 Vortec – YouTube ECM B fuse blowing 98 Chevy GMC problem found. No start 5.7 Vortec

Where is the TCM on a Silverado Sierra?

MIKE91B wrote: Swapping modules won’t help you and will most likely cause you more troubles you don’t want. Fuse 14 in the under hood junction block should be the TCM, it is a 15 amp fuse, make sure it is hot.

Where is the TCM fuse on a DLC?

Swapping modules won’t help you and will most likely cause you more troubles you don’t want. Fuse 14 in the under hood junction block should be the TCM, it is a 15 amp fuse, make sure it is hot. Given the fact you have power at the DLC you can rule out the battery, the cables, and the mega fuse to the junction block.

What to do when ECM 1 fuse blows?

Hi GMCs! Just turn the key on the ignition and ECM 1 fuse blows. I am trying to find a short in the circuit. Would anyone help me with this task? Any relevant information available? Thanks guys!

Why is the ECM 1 fuse blowing on my Acadia?

When I got the yellow engine warning last week, I scanned the 2011 acadia and it showed P0451 code. It seemed it could be related to EVAP problem. I drove for couple days and then I filled up the tank to top. Now when turning the key (No crank) and ECM1 fuse blows, it shows P018C code.

Why does the IGN fuse keep blowing out?

Been having some trouble the last few days and yesterday it wouldn’t start and all i could hear was buzzing so tried a boost and it ran fine and a few hrs later tird it again and it wouldn’t go on a boost. Now im seeing that when i turn the key the ign fuse is burnning out?

What’s the ignition fuse on a Honda 10A?

10A is the ignition fuse. Same thing happened to me couple months ago and I have the same model and year. Kept blowing the ignition fuse, no FI light, no fuel pump, etc. Checked all the wiring, good.

What does a blown fuse on a car mean?

A blown fuse always points to a wire shorting to ground. Check closely, and get a good meter to check continuity and grounds. It will become your most effective tool in troubleshooting.

How do you reset the ECU in a car?

Locate and remove the cover on the fuse box. Some say to disconnect the negative (black) battery terminal to reset the ECU, but this is unnecessary. Plus, it resets everything in the car (including your stereo settings). Instead, with a fuse puller or needle nose pliers, pull the following two fuses from the fuse box:

Why is the ABS not working on my Hyundai Accent?

It appears a sensor has failed. The car has less than 42k miles and is in perfect shape. When the car turns over, the brake, traction control, and abs light stays on, the speedometer doesn’t move when in motion and the fuel range switches numbers while in motion.

Are there any problems with the 2015 Hyundai Accent?

See all problems of the 2015 Hyundai Accent . My daughter called to tell me that upon starting the car and still in park, the brake light and abs control lights were lit up, as well as the speedometer was not working. This should be addressed by the manufacturer as this poses a serious problem for a driver.

What are the symptoms of a bad ECM power relay?

A bad relay may cause the vehicle to crank, but not start, or sometimes not even crank at all. 3. Battery drain or dead battery. A failed ECM power relay can also cause a battery drain or dead battery. If the relay shorts it can leave power on to the computer, even when the vehicle is turned off.

What causes a battery to go dead on an ECM?

Battery drain or dead battery A failed ECM power relay can also cause a battery drain or dead battery. 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.

What should I do if my ECU light comes back on?

Drive the car for at least 10 miles for the ecu to learn, if there is a problem with your vehicle then the check engine light will come back on and you can analyze the fault code that the ECM throws. These codes will guide you towards the root of the problem and you can begin replacing parts to try to fix the issue.

What does it mean if I have a blown fuse?

A blown fuse signals a short circuit. This occurs when an electrical component draws a stronger current than it is designed to handle due to the device malfunctioning. Defective switches and faulty wiring are common causes for fuses blowing, but any kind of mechanical issue with a motor or an electrically motivated moving part can be a culprit.

What is the cause of a blown fuse?

There are two conditions that can cause a fuse to blow. First, and most commonly, when too many lights or plug-in appliances draw power from the circuit , it can overload the capacity of the fuse and cause the metal ribbon inside the fuse to melt through.

What if fuse keeps blowing on?

The common issue with fuses blowing would be because of faulty wiring . The faulty wiring or even the defective wiper motors would often lead to the excessive current flow in a system. What this does is result in a blown fuse each time a new one is installed. If the motors cannot be repaired, then you might have to replace them entirely.

Why does my ECM-I fuse keep blowing?

Fuel Pump. Another cause of an ECM 1 fuse consistently blowing is a fuel pump problem. When the fuel pump begins to fail it overheats, causing it to drain more amperage (amp); if the amps exceed the amount of amps the ECM 1 fuse allows, the fuse will blow. Replacing the fuel pump should correct this problem.

How to prevent amplifier fuse from blowing during power switch on?

The idea is actually quite simple. To prevent the amplifier fuse from blowing we simply need to ensure that the amplifier input power is applied with a soft-start AC input. To implement this a small delay ON timer can be employed.

Why does the fuse keep blowing on my ignition switch?

When the circuit is live and the short is present, the bulb will be full brightness and hot so be sure it is not laying on the carpet or against a plastic door panel. Now you can unplug electrical connectors and move things around to see what makes the short go away. When it does, the bulb will get dim or go out.

What causes the fuse to fail when I turn the key to the start?

If the WHITE wire coming off terminal “S” is shorted anywhere between the ignition switch and the clutch/brake switch and the attachment clutch and solenoid it will cause the fuse to open/fail or if “clutch/brake switch or “attachment switch is shorted it will cause the fuse to fail/open whenever the key is turned to the start position.

Where are the fuses on a Harley Davidson?

Hi Kelly, Under your left side cover, you will find a fuse block containing headlamp, ignition, lighting, instruments, brakes, cruise, radio memory, radio power, accessory, etc fuses. You will need to remove the fuse block cover to access these fuses. It is a black, plastic cover.

Do you need to reset the ECM on a Harley Davidson?

Many people also believe that any modification made to the bike requires an ECM reset; however, this should not be the case. After a few cycles of starting and stopping, the ECM should learn your new setup on its own. In just a matter of minutes and virtually from anywhere, you can reset the ECM yourself by following these simple steps.

What to do about a bad ECM on a Harley Davidson?

Discovered an intake leak, replaced with new gaskets/rings and cleaned injectors using a Fuel Injecter ultrasonic (or whatever the thing is called) machine,…no fix but the bike ran way better than before but when got up to hot, same problem reoccurred. I am down to now having to take it to dealer for diagnostic test on Coil and ECM.

Where are the fuses on a Harley Davidson touring?

The fuse box on your Harley Davidson Touring holds all the fuses, and some relays, which you may need to check when faced with electrical issues. A lot of times, fuses go bad due to old age and vibration, not necessary an electrical short.

What to do if your ECM is not working?

Especially since you say the front cylinder is not firing consistently. If you can get it running and before it gets too hot, reach in and wiggle the injector wires where they mate to the connector. See if you notice a change in ignition which will be fuel to the cylinder. This will confirm that is your problem. See here:

Why does my Fuse Box keep going bad?

A lot of times, fuses go bad due to old age and vibration, not necessary an electrical short. However, if you find yourself replacing the same fuse over and over, it’s a sign that you have an electrical issue bigger than a blown fuse, most likely a short circuit.

What did the fuse blow on my GMC Acadia?

Whatever charge that blew the fuse came from the PWR/TRN relay. Re-connected all the plug/harness for Pink/Blk wires. Removed the PWR/TRN relay and turned the key to”ON” position. No ECM1 pop!!!!

Why does my ECM say fuel to air?

Your engine is never as finicky about fuel-to-air ratio as it is when it’s first starting up. If your ECM is setting the ratio incorrectly, this is the first time you’ll notice.

Can a bad ECM cause a car not to start?

4. Car Not Starting. A bad ECM may lead to a vehicle that won’t or is difficult to start. If the ECM fails completely, it will leave the vehicle without engine management control, and will not start or run as a result.

Where is the fuse box on a Pontiac Grand Prix?

Here you will find fuse box diagrams of Pontiac Grand Prix 2004, 2005, 2006, 2007 and 2008, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay. It is located on the right side of the dashboard, behind the cover.

Where do you find the fuel pump relay?

When you shut off the ignition, it powers down the fuel pump. In most vehicles, the fuel pump relay can often be found in the fuse box in the engine bay, which is usually a long black box which contains fuel pump relay along with various other fuses and relays.

When does a fuel pump relay go bad?

If you’re lucky and your car restarts after a short while, your fuel pump relay is faulty, which requires immediate inspection. The fuel relay may be the culprit if the car suddenly seems to lose power while driving, or slowing down with no apparent reason.

What causes the fuse to blow on a fuel pump?

I would start at the fuel pump itself. If the fuse blows as soon as you turn on the key, undo the connector at the tank to the pump and put in a new fuse. Try it again, if the fuse pops then your short is before that point likely a chafed wire on the body. If the fuse stays good then the problem is in the pump harness or the fuel pump itself.

When did I replace the fuel pump in my S10?

In April I replaced a fuel pump in my S10. When they replaced it , it blew a 20 amp fuse. They put in new fuse and it ran fine till this week. 5 months later. The fuel pump was bad and was replaced under warranty.

Can a fuel pump overload cause a problem?

If not, check the other loads on the fuel pump circuit as those other loads could be causing the problem (the overload). To check that refer to wiring diagram in Factory Service Manual.

What causes fuel pump to draw more current than intended?

There is also the possibility of a physical (mechanical) restriction in the fuel pump tubing, filter and/or pick up causing the motor to overload and draw more current than intended. That’s why you should measure the actual current draw of the pump in normal operation to rule that out.

What to do if your ECM power relay is failing?

For this reason, if you suspect that your ECM power relay may be having an issue, have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if the relay should be replaced. The most popular service booked by readers of this article is Vehicle Engine Electrical Inspection.

What does the ECM stand for in a car?

The electronic control module (ECM) — also called the powertrain control module (PCM) or electronic control unit (ECU) — is a computer which controls the electronics in an automobile.

Why does my ECM keep blowing out on my truck?

Driver went in pick up the truck it was running fine, after he was hooked to the trailer, truck stalled again, they took him back in the shop and came back telling me that ECM is blown because of corroded wire. my question is, why would truck start at and runs fine for the first time when he just fixed it with fuses and partial power wire to ECM.

Why did my N14 turn off the ECM?

The mechanic found moister in the plugs at the ecm and corrosion in the original fuse holders. His theory is moister was getting into the wiring and causing enough resistance and voltage drop to turn off the ecm (As you all know it takes 10.5 volts to fire the N14).

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