Ecu Fuse Blown Symptoms
I have a new coil pack harness and Injector harness coming tonight. Why Does My ECM-I Fuse Keep Blowing? by Gerald Elliott 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. Simply put, my ignition fuse keeps blowing every time I attempt to start the engine. The three fuses that can affect your trunk release are: 1. Start by checking the 20A fuse in front of the battery. But the problem is, most times, you may not know if the Engine Control Module is faulty. Q7 Discussion - Audi Q7 2007 ecu fuse - Hi all I hope someone can help iv took my q7 to Audi today over the loss of power to the injectors I want to find out where the fuses are for the ecu as there is a fuse for the injectors and control module the reason is Audi want to charge me £££££ just because they think it. I found that by removing the #17 fuse from the passenger compartment that the #9 fuse doesn't blow. One of the most common symptoms of a failed ignition relay is a car that suddenly stalls while operating. just for the part, plus $420 labor. A fuse is 'blown' when the connector between its two ends melts under an overload of current. It may be worth checking the alternator is giving out the correct voltage when you get the car up and running again. is the world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Module and all other car control units. If you have a blown fuse then you must track down the source of the short and repair it before replacing the fuse. 6 Petrol Focus 1. When you blow a fuse, take the blown fuse out and throw it away as you would a blown light bulb, and replace it. The skid control ECU converts the wheel speed signal into a 4- Similar symptoms, ABS light on. The O/D off stopped flashing too. Symptoms of a Bad or Failing Ignition Relay. Car starts and runs fine. 99 This repair service is for the PCM (Power Control Module) or ECM (Engine Control Module) from a 2005 or 2006 3. They connect all the electrical components in the car to their intended points of connection. Open the glove compartment and turn the two white quick-release fasteners outward. Other than the wiring, there's a good chance the fault is on the ECU. Switch check. I swapped it for another 20A fuse and it popped again, so left it by the side of the road and got a taxi home. I've been told that they don't necessarily need to match as long as it is out of the same year and model because it needs to be reprogrammed anyway. When at rest, the MAP sensor reads atmospheric pressure at sea level (29. Gain the capacity to replace your fuses, and the potential to insulate yourself from shocking repair bills. Most of the time, our instinct to fix an electrical problem is to bang on the dash board a few times and hope whatever it is comes back on. 2001 Kia Rio 1. Once the fuse is replaced we;re back to normal working order. All Dodge/Jeep/Chrysler Fixes. Replacing the fuel pump should correct this problem. Have someone inside and a window open. Autel MaxiCOM MK908Pro is the latest member of Autel’s diagnostics family, which is the advanced version of MS908P. Check the high ampere fuses on your car. With the wires to the latch disconnected, the actuator will work and then the fuse will blow (trunk open or closed). Start by checking the 20A fuse in front of the battery. Pay attention once the head work has been done to see if any of the other symptoms on our list occur. Symptoms: - When I turn to the key to 'start' one loud click is heard in the middle of the engine by (near starter's location) and the radio/clock turns off as long as the key is held to start. I'd bet on something to do with the wiring on the stereo; I had this a few years back and had similar symptoms to you. MFJB (MEGA Fuse Junction Block) • Houses up to 5 fuses • Provides cleaner power & higher voltage to cab and engine control systems than the old method of attaching them to starter stud. Lifting the bonnet and fuse box sure enough Fuse No^ the 30amp one had blown. CarComplaints. lock Indicator lights do not light up (Diff. In this video we show you how! If you have any further interest. ELECTRONIC CONTROL UNIT (ECU) REPLACING THE ECU Remove t1ie control box cover. When you have a blown fuse focus on diagnosing the circuit with the blown fuse. Have a look to check if your brake lights are working correctly, but I think that might be a different minor problem. Checked my vehicle wiring, its still good with no shorts etc. It there something common to this issue? thanks. This is located under the. Thank you for choosing Module Experts Audi ECU Repair service. In other words, make sure you're getting power to all the fuses in your fuse box. The engine control unit, or ECU, is basically the brains of your car. ive also been having a problem with acceleration. So twice this week my eccs 2 fuse has blown, I can't figure if its while I'm driving iassuming its while starting it happens. Replaced that and then proceeded to flip the killswitch. changed 100 amp alternator relay also 15 amp ECUB fuse and 15 Amp EFI fuse all blown and replaced still car will not start. Have a look to check if your brake lights are working correctly, but I think that might be a different minor problem. Since a loose or corroded fuse connector may also cause many intermittent circuit failures, thoroughly inspect and clean the fuse circuits before proceeding with your diagnosis. Most of the time, our instinct to fix an electrical problem is to bang on the dash board a few times and hope whatever it is comes back on. Blowing ECU Fuse (Fuse 15) At some point during the month of August the Roadfly forums are going to become archive only. That's a great place to start looking. The fuse burns out at 20 amps, which is below the current that might damage the circuit. Repair Your Electronics by Replacing Blown Capacitors: Checking for blown capacitors in your malfunctioning electronics is fast and easy if know what you're looking for. A voltage regulator maintains an even flow of electrical power to an automobile's electrical systems, including the headlights, dashboard components and the stereo. If the fuse blows at any time then it is the last one you connected. without it, your car wont start but it will keep turning over. Tried to go for a Sunday ride and got as far as the driveway! Fuel pump fuse 15 amp keeps blowing. This one switches the supply to the starter relay and ignition coils (via fuse 12), also the oxygen sensor heaters (via fuse 14). Defective switch(es). [ 1 Answers ] Problem: The 3 amp fuse on the circuit board keeps blowing out Symptoms: The red led light is on continuously. Plus the fact that my fuse to my ECU was blown doesn't help either. OBD-II diagnostic code P2090 is associated with the B camshaft position actuator control circuit on bank 1. Wait ten minutes. Fabia Suddenly Stops, ECU Fuse Replaced, Now Won't Stop At All! somewhere that could have produced these symptoms? compound when the amp blows and can short. and see if the problem is resolved. I made a circuit breaker that plugs into the ECU fuse slot and started it up. Replace any blown fuses, and check if the device works. Fuse box in the glove compartment BMW E46. The RFIP board in the RPIP enclosure contains 29 fuses. Guess what. When the jumper cables were connected backward, this fuse blew. With no changes in symptoms. The three fuses that can affect your trunk release are: 1. If the O 2 sensor's heater had shorted out, the fuse may have blown as well. Not having the fuse blown does not at all prove that your DCCV isn't bad. I've since determined that the 20A PCM fuse has blown; I replaced it from one of my "fleet" in the back yard, and it blew again. The Car is a 2006 1. fuse (Blown) 2. 0L - 1L8U-12A650-AA - Engine Computer ECM PCM ECU Programmed & Flashed - MPC-160 & MPC-161. Read on to learn more and make sure to watch the included video!. the symptoms are that the ECU fuse will randomly blow and the truck wont start, replace the fuse, it blows again. Fill out the Repair and Return Form and send us your unit today. checked bus signal. Bad earth wire to airflow meter. Check for 12-volts from this pin in the ECU connector plug to ground, when the key is in the RUN and the START positions. When a short happens a fuse is blown. If this happens, check and replace the fuses as necessary. No aftermarket alarm but same symptoms- No. The whole system on these trucks such if it isn't run thru switches-relays?&src=tdr">relays as it can and will take down the controllers, aka computers. Check out this fuse box guide for your Honda Accord to help you figure out what fuse does what. 7 in it and the truck was running just fine until I went to start it up It started fine just like every other time and I gave it some gas up to about 2000RPMs and right when it returned to idle it died instantly just like I turned the key off. I DO have the 12V from the orange wire(pin 5), which is hot all the time from ECMb fuse. Symptoms of a Bad or Failing Ignition Relay. Is this the case? Also, is an ECM the same as an ECU? Symptoms: fuel gage does not work, key cannot be removed, will not shift from park. P053F ECU Fault Code: This ECU code is a kind of OBD-II Diagnostic Powertrain (P) Trouble Code Possible Cause. He replaced it and car cranked right up. These are the symptoms: 1)Car has slow start and sometimes just clicks no turnover, and sometimes if after it clicks i hold the key for 5-7 seconds it will turnover and start 2) both Saturday and Sunday the car blew the starter fuse when trying to start. - A rapid blinking arrow on the dash accompanied by the faster (louder) blinking/clicking noise heard from the flasher relay, usually a blown bulb or bulb element that has shorted out. Again, most common reason for an A/C compressor not engaging is a lack of refrigerant (check that first). ECM fuse popped. Vehicle Networks The Jaguar XJ employs three different networks: a CAN (Controller Area Network) for high-speed power train communications, an SCP. Opening the glove compartment door immediately blew the fuse. Checked my vehicle wiring, its still good with no shorts etc. They want $1600. I have done nothing to cause this and niether has the customer. HIDs stopped working, high beams and everything else is fine. Try a proper Vauxhall/Delphi coil pack instead. Since the early '90s, Honda vehicles have used an electrical load detector (ELD) unit in the under-hood fuse/relay box. I replaced all the fuses that were blown, but still had no relay clicks and no fuel pump sound and the check engine light stays on. These are the symptoms: 1)Car has slow start and sometimes just clicks no turnover, and sometimes if after it clicks i hold the key for 5-7 seconds it will turnover and start 2) both Saturday and Sunday the car blew the starter fuse when trying to start. To remove the storage compartment, open it and pull it outwards. If your car's head gasket has blown recently, the chance is high that the lambda sensor will have become contaminated. GAUGE fuse (Blown) 3. Also check the 7. coded as follows. *Some of these files must be viewed with Adobe Reader. Ended up being his wire tuck was shorting and blowing a fuse in the passenger junction box. Now it appears to be something different. Remedy: Check fuse 15 and fuse 30 if they are both blown then replace the fuses (7. This sensor takes advantage of this unique property. does anyone have a wiring diagram of the ECU power and accessories circuit that includes the cable harness to the dash board from the ECU? ive been checking all my connections and cant seem to find a blown fuse or anything so im thinking it could be a grounding isssue. Dome light blow fuse and alarm not working Car I was modding my dome light and suddenly blown the fuse I think. Ranger - 2011 Fuse Box; AUXILIARY POWER POINT (12V DC) To prevent the fuse from being blown, do not use the power point(s) over the vehicle capacity of 12V DC. The engine stops running while driving down the road and the car just stops. 2005 Saturn ION no crank, no start. On one I replaced the viper16 chip the two resistors and the small 10uf capacitor that was blown which fixed the one airfryer and it has been running since May with no problems - the other airfryer ( my friends) seemed to have had another problem as well - his had failed around 1 year. Re: ECM/IGN Fuse keeps popping, won't start 07-15-06 06:26 PM - Post# 969486 In response to sedandelivery55 There's quite a few items on that circuit. The Evora ECU looks like it is an EFI Technologies unit, similar to the Elise/Exige. I doubt you will have done any majour damage to the ECU. The most recently reported issues are listed below. blowing same fuse. My 2005 SRX V6 has the following symptoms: 1- Key stuck in the ignition - No Warning Lights or Cluster Message - Car WILL start and drive. The engine stops running while driving down the road and the car just stops. Fuses are easily removed from the fuse box with a pair of pliers. POWER fuse (30 Amp) These are all located in Junction Block #1 on the left side of the dash. I replaced the fuse and yes the light worked as it should, thereby saving the £1200 odd pounds that Toyota would have charged to replace the entire ABS system. Car starts and runs fine. Common Volkswagen ECU faults looking at the different models and possible ECU problems for them. Whenever the ignition is turned on and the circled harness is plugged in (behind passenger kick panel) the ECU-IG fuse blows. Check the fuse by using a test light. two ECU's at it. Inline fuses for the ECM power supply are common sources of issues. However, this seemingly harmless occurrence may be wasting your money in more ways than one. Check the "Possible Causes" listed above. 99 This repair service is for the PCM (Power Control Module) or ECM (Engine Control Module) from a 2005 or 2006 3. Use a digital multimeter to check for a blown fuel pump fuse. NO guessing here. my o2 sensor wires became exposed, and i dont know what they tuched, now as soon as i put the key into the oN position the ecu fuse blows (Red fuse labeled 10 under the hood) before, it would turn the car on THEN blow, now, as soon as i put it to oN it blows, any ideas? and whats the worst that cud hapen if i yanked on my 02 sensor wires?. I have a new coil pack harness and Injector harness coming tonight. Troubleshooting should obviously begin with any diagnostic trouble codes (DTCs), followed by checking for blown fuses. lock ECU (Faulty) 4. " MEASURES TO TAKE AFTER REPLACING. IT IS ECM GROUND FUSE. If the fuse does not blow, the possibility of an intermittent short still exists. If this happens, check and replace the fuses as necessary. He replaced it and car cranked right up. Changed the fuse, started the truck without problem and let it idle about 5 minutes. (Able to remove key only with screwdriver in the column trick) 2- Cruise Control Not Functioning - No indicator light or function. Ford Focus Electrical Fuse Replacement Guide How to check or change a blown electrical fuse in a 3rd generation MK3 2011-2014 Ford Focus with panel locations. Just started today while driving home. So as an emergency road repair, you can jumper the fuse connector from fuse 12 to fuse 28 and bypass relay 109 altogether. All the symptoms of a blown fuse, but the fuses all look fine? I was driving my 96 Olds Ciera today, and suddenly all the dash lights went out, the headlights went out even though they were switched on, the power locks wouldn't work (though the power windows were still ok), and the ABS light came on the dash. No? How well does the hose fit on its connection point? If the rubber is hardened up and not sealing well, replace it. It provides power for the fuel pump and the coils. We are not out to depress the trade of any main agent garage, but to put private motorists with ECU problems swiftly back on the road. Check fuses, Blown 30 amp ecm/fuel pump/ tilt fuse and a smell of burned something. If this happens, check and replace the fuses as necessary. The three fuses that can affect your trunk release are: 1. right-hand foot well. Pulled ecu and see crack in side of housing. briansmobile1 56,605 views. I would think that if this were removed, you should notice significantly more problems with other features not working. It only takes a second to see if a fuse has been blown. Open the hood. I am asking for advice on a problem I have with my 1998 Volvo VNL (Serial# 4VG7DGGH9WN743136) with VED12 Volvo engine. ECM -1 FUSE BLOWING 12 Answers. so i turn the key cant hear the fuel pump prime. The Famous Jeep Grand Cherokee Electrical Problem by trevtaylor Repeatedly blown 20A fuse on engine fuse block same symptoms as all, gauges die christmas tree lights up. So as an emergency road repair, you can jumper the fuse connector from fuse 12 to fuse 28 and bypass relay 109 altogether. The most frequent symptom of a problem with your vehicle's charging system is a battery-shaped warning light (in the photo) or the " CHARGE " icon that comes on while driving. If the fuse doesn't blow then reconnect the lights one at a time. Once this fuse starts to blow, it's an indicator that you are going to need a slightly bigger fuse because the circuits seem to repeat the fault that causes a momentary overload. It appears that I have most likely blown a fuse but I can't find my engine compartment fuses. Left-hand drive. This unit reads the amperage load directly from the battery and in-turn sends a varied voltage signal to the PCM which regulates the field signal to the alternator. Start the engine. All are good. There's obviously a dead short somewhere, finding it is the trick. Consider the following five points: 1. Inspect the entire length of this wire, repair and retest. edit: Unless your battery is like super dead (with a non-working alternator this COULD cause the symptoms you are having) I doubt it's an electrical issue. The symptoms are the same as the post I read, no PS, ALT, Shift Lockout solenoid, etc. I would investigate those before changing the ECU. The Variable A/C Compressor Control Circuit works by engaging and disengaging the compressor at the right time, keeping the desired amount of temperature within the vehicle cabin. I swapped it for another 20A fuse and it popped again, so left it by the side of the road and got a taxi home. Engine hesitation under load. I tagged onto an older Fuse 14 thread and got some much appreciated response but it didn't quite fit my car ('02 Passat, 1. Ok guys, heres the problemmy battery keeps draining, I cant find anything that is draining it, but get this the other day I was charging the battery and one of my main fuses blew (If you look under the hood at the 240 fuse box, second column, top fuse (75 amp). Unusual Intermittent Electrical Power Problems Mercedes Sprinter Posted on by Have you had issues with mysterious power interruption or gremlins, maybe with wipers, headlamps, radio, indicators and various other sections of the vehicles electrics? - well the common issue is the fuse box distribution module that lives beneath the steering. The reason why the radio, dash lights, headlights, and other electronics draw power while the engine doesn't has to do with the amount of current each device draws and what may be interrupting the path. To diagnose a fuel injector problem you need a keen sense of your vehicle, a little time and some basic fuel injector knowledge. CIG fuse (15 Amp) 3. two ECU's at it. 445), SLK 230 Kompressor (170. I checked the fuses and the fuel pump fuse had blown. Check those fuses first, but check all the fuses before deciding that a blown fuse is the cause. It only supplies power to the cops. Fuses are easily removed from the fuse box with a pair of pliers. Maybe some lights go on and off, or the radio or clock has stopped working. I have Toyota Corolla. Found a burned smelly fluid on side near ecu. is there any module in the wheel itself?. Symptoms also included blowing fuse 14 and weird voltage at rear nearside door electrics. The ECU (engine control unit) gets the voltage signals from different components, detecting possible malfunctions within the system. 5a IGN fuse and 10a ECU-B fuse with a multi-meter. The fusable link is a piece of wire that acts as a fuse in between the battery and fuse box. That's a great place to start looking. Fix this or any other charging system problem before dealing with the ECU/limp mode problem. Reply I found fuse 2 had blown (20A ECU). YourMechanic. If fuse is blown, correct cause of blown fuse, and replace fuse. It supplies power to the ECU when the ignition is on. If fuse is okay, go to next step. 4 Symptoms of ECM Failure. - Per the FSM, I have followed the flow chart to test the MIL. Hi All, I am having a problem with my EFI fuel relays. However, read Wulfara's thread, immediately below yours. Whether or not you are looking for a Remanufactured Audi ECM tomorrow or looking to send yours in for our Audi ECU Repair Service we have a solution for you. Does anyone know where they moved the fuse blocks? It is not behind the seats. Changed the fuse, started the truck without problem and let it idle about 5 minutes. If you found a bad fuse, replace it with the same exact item and try again. You will also notice that the 30 A main fuse blows when. Thank you for choosing Module Experts Audi ECU Repair service. Simply put, my ignition fuse keeps blowing every time I attempt to start the engine. Poor fuel economy. 1 minute later car died out and another ignition blown fuse. If this happens repeatedly, a professional Mercedes Benz repair technician or mechanic can help check any updates for your COMAND / navigation unit. Turning the valet lock on prevents the fuse from blowing. I thought maybe it was the immobilizer box being bad. 5A fuse in the main fuse box. Blown ECU fuse. It’s a long post but there is some useful info which may save you time. I got the right fuse in my car is running A1. Your service manual shows the location. Check your Fuses for blown fuses. When some of these fuses are overloaded and become open, the resulting symptoms. Luckly she was only a few minutes away from a friend of ours, who helped push it outta the middle of the road onto a side street. This is where we’re going to work. Such a simple easy thing having me pulling my hair out for 2 years. If there is a problem, check the fuse feeding the pin. I had two blown fuses under the hood, the ECU and the backup fuse. 5A), turn the ignition to attempt to start the engine. Wiring or ground (Faulty) Differential lock does not operate: 1. The most frequent symptom of a problem with your vehicle's charging system is a battery-shaped warning light (in the photo) or the " CHARGE " icon that comes on while driving. The Lexus dealer said my ECU is malfunctioning and it needs to be replaced. The gauges and fuel pump do not activate when the lanyard is on either. It provides power for the fuel pump and the coils. With the trunk open nothing happens when I operate the release button on the door or the fob (no sounds, fuse ok). checked bus signal. If those lead to dead-ends, the K40 is worth scrutinizing. Titan Problems & Dealer Service There is a recall involving the ECM relay, TSB NTB10-137b The TSB list 04-06 but give the dealer a call anyway with your VIN. Remedy: Check fuse 15 and fuse 30 if they are both blown then replace the fuses (7. Exhaust Leak. I hooked up my laptop and used my Allison Doc. I replaced it with a automatically resetting circuit breaker and have had no more problems. The main 30A fuse was fine. There could be more circuits that impact the starting depending on the model. When one gauge stops working, the problem may be in the gauge itself or a bad sensor, while all the gauges cutting out at the same time often indicates a blown fuse or a defective instrument cluster. fuse (Blown) 2. When I hit the throttle hard and fast the same lights flash and the main fuse blows. coded as follows. Symptoms Of A Bad Voltage Regulator A bad voltage regulator can leave a vehicle sitting on the side of the road. As the individual electrical circuits are switched on, the bulb will glow dimly, if a faulty circuit is connected, the bulb will glow brightly. I have Toyota Corolla. Not sure about the 100a blowing. Putting a fuse in a soon as I turned it on pop fuse blown, I didn't even turn it over. Holden Astra 1999 on Airflow codes keep coming up. i would locate the ECU which is under the center of the plenum in the engine compartment and disconnect the long plug. You would want to check fuses for systems such as: Starter Circuit, Ignition, EIS, Fuel Pump. If continuity is present, the fuse is good. Get readings from the TPS wire at 0 throttle and 100% throttle via the correct pin on the ECU wiring, that will tell you if your TPS is working. '94 No Start, FP Not Working? - posted in Spec Miata Garage: Hi guys, My '94 died on me while exiting AMP a few weeks ago. One of the most common symptoms of a failed ignition relay is a car that suddenly stalls while operating. 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. Then drove to the dinner in our. It blows when you hit starter when THICK NEGATIVE WIRE to starter is broken. Not only that, there's no pins in the sockets, so no wiring! Can other owners please have a look, it's a 10A fuse that sits 3 down from the audio fuse, which is the one with the yellow plastic clip thing over it. I checked the fuses and the fuel pump fuse had blown. One day at Napa the darn thing wouldnt start and thats when I found the burned out fuse. There are a few things that can tip you off that there’s a problem. Basically every time I give it gas in gear and the car starts moving, the fuse blows and the car shuts off. Q7 Discussion - Audi Q7 2007 ecu fuse - Hi all I hope someone can help iv took my q7 to Audi today over the loss of power to the injectors I want to find out where the fuses are for the ecu as there is a fuse for the injectors and control module the reason is Audi want to charge me £££££ just because they think it. To learn which, one needs to remove the relay and place a 10a fuse between contacts 30 and 30a of the socket, then start the car. The fuse does not blow with the key inserted into the ignition, but it does blow when set to ACC/ON. ive also been having a problem with acceleration. Touch the probe of the test light to each of the switch terminals in turn. I went to a local motorcycle junkyard and they have what appears to be a 1500 classic or nomad ECU, but I don't know if they'd be compatible (different numbers) and a new ECU is like $800 and I'm. My shifter panel was replaced by the PO but I have no idea why or what the symptoms were. I would think that if this were removed, you should notice significantly more problems with other features not working. Checking for voltage at the fuses will tell you nothing. If anything you could have bown a fuse link under the bonnet. Ignition + ve. Driving Symptoms: Your transmission relies upon the positions of multiple solenoids to control the gear selection. Lifting the bonnet and fuse box sure enough Fuse No^ the 30amp one had blown. 99 vw jettal 2. 99 This repair service is for the PCM (Power Control Module) or ECM (Engine Control Module) from a 2005 or 2006 3. Did this several times. bingo the ECU is bad. I found a fuse diagram that shows those being in spot #17 on the interior fuse box, but I haven't gone and checked it yet because I want to figure out this alternator fuse first. Cab Work lights do not work Blown fuse. Your service manual shows the location. 1991 Chevy S-10 ECM fuse blowing when ignition is turned on. Common problems with the LCM include a blown fuse, or a lack of power at the LCM connector. Here is a picture of this fuse on a Honda Civic. ecu fuse problem drifterMCz. And restrain yourself from swapping components trying to fix the problem before knowing which part is causing you trouble. Timm's BMW M62 and M62TU Engine Failsafe problems on E38 and E39 Main DME ECU 30A Fuse blown. help please Thats the fuse for the ECU, engine control module, and is a 15amp for gas 2. If it was your alternator, it would've blown the alternator fuse. The 2007 Nissan Xterra has 1 problems reported for ecm fuse blows when turing key off. I installed the fuse and a new purge valve and she is running fine for now. Bad EGR valve symptoms vary and resemble problems in other engine systems. I just picked up a 2002 Seadoo GTX 951 DI yesterday and I cannot get the lanyard beep when connected to the post. With the wires to the latch disconnected, the actuator will work and then the fuse will blow (trunk open or closed). The last thing I did was borrow my buddies datalogger and when connected I couldn't get a single reading! Thats why I now suspect my ECU is toast. IT IS ECM GROUND FUSE. The engine control unit, or ECU, is basically the brains of your car. is there any module in the wheel itself?. I replaced the fuse and yes the light worked as it should, thereby saving the £1200 odd pounds that Toyota would have charged to replace the entire ABS system. I would investigate those before changing the ECU.