This is sufficient to recharge the battery safely while protecting the electrical circuits. B– connections on alternator Both ground cables must be connected together at battery ground potential when alternator is installed in vehicle and dur-ing operation. Buy part / https://leeautoelectric. Sounds to me that your problem is due to a faulty voltage regulator. This database includes information received by NHTSA from consumers either directly or as recorded by the Vehicle Safety Hotline. The regulator also controls the current. The voltage regulator also contains fault detection circuitry. These only charge your battery and unless your battery was very marginal when you went out, it should run on a fully charged battery longer than that. System Voltage Malfunction. I recently purchased the vehicle for my wife. OMB Warehouse - Go Kart Parts and Mini Bike Parts. Fuel pressure sensors(FPS) What is a FPS? What does it do? Your common rail Diesel Engines is fitted with a fuel pressure sensor. As I have said, this is a typical setup and one that works very well - until your voltage regulator gets flaky. I don't know. Replacing a perfectly good ISC motor or solenoid won't fix the problem if the fault is in the wiring. A dead voltage regulator can cause ignition and charging problems, and a damaged or melted connector can cause the same issues. battery discharges after couple of days. In other words, the faster it spins the more voltage goes into the car's electrical system. Buy online, pick up in-store in 30 minutes. I have brand new rectifiers on the shelf with no fuse, I have started adding a 30 amp fuse in that line when I replace these regulator/rectifiers. 5V or more with the engine running, there is a connection problem downstream. He suggests a solid-state voltage regulator. I own a 2005 Nissan Altima which has been having alternator/battery problems for past 1 year. Buy a genuine Mercury Quicksilver or aftermarket part. Get the best deals on Voltage Regulators for Nissan Pathfinder when you shop There seems to be a problem serving the request at this time Voltage Regulator. While functioning, the engine within a generator works at different speeds according to the output that needs to be produced. The voltage regulator 34 is designed to provide a steady output as long as the voltage V ref stays within a predetermined range of voltages. What Can Go Wrong. A dead voltage regulator can cause ignition and charging problems, and a damaged or melted connector can cause the same issues. Any time problems occur with the vehicle charging system, immediate attention is required. Sounds to me that your problem is due to a faulty voltage regulator. B– connections on alternator Both ground cables must be connected together at battery ground potential when alternator is installed in vehicle and dur-ing operation. If you would like to have your battery tested for free, bring your car by Nissan 24 in Brockton, MA, and ask for our service department. The electrical system in an automobile is said to be a 12 volt system, but this is somewhat misleading. regulator that Nissan couldn't supply at a price less than a week's wages. It is the job of the Voltage Regulator to maintain the Alternator's Rated Output Voltage provided the RPM is high enough to produce the required load current and its maximum Current Output is not exceeded. com 240AMP Alternator to cure the problem. Overcharging your battery can significantly decrease its lifespan, make it more difficult for it to turn over, lower its efficiency and in extreme cases can even lead to battery explosion. 7 CDTi Learn Fuel Pressure Regulator by Delphi Ds150e. Battery and brake light came , had it tested at o'riley alternator tested bad voltage regulator. 8 there is likely a problem with the voltage regulator. Get the best deal for Voltage Regulators for Volvo XC70 from the largest online selection at eBay. Search the catalog or contact us for a high output alternator for your vehicle today!. , If Ordered Now, Ships in 4 Business Days 100% guarantee. Voltage drop testing is handy for finding the source. Free Same Day Store Pickup. One part of your Nissan Pathfinder is the Voltage Regulator. Was thinking of changing voltage regulator. A Short Course on Charging Systems by Charles Ofria. (You'd think it draws less current with lower voltage according to Ohm's law, but remember the commutator interrupts the current, so the interruption isn't as fast. Mosfet Voltage Regulator Rectifier; Mosfet CNC Voltage Regulator Rectifier; CDI Box; Kits; Ignition Upgrade Kits; Mosfet Regulator Lithium Ion Batteries; Battery. Re: Voltage Regulator/Rectifier Problem?? I doubt it's your rectifier/regulator causing the original running problem. This database includes information received by NHTSA from consumers either directly or as recorded by the Vehicle Safety Hotline. Is your Alternator Over Charging? Did it quit working because of a broken vehicle computer?. If the voltages aren't within a few tenths of each other, the charging system problem might lie within the ECM or ECM wiring. Voltage regulators are commonly found in vehicles and other electronic equipment. 5 Volts as is needed by the rest of the electrical system. Buy Unbranded Car Voltage Regulators for Ford and get the best deals at the lowest prices on eBay! Great Savings Free Delivery / Collection on many items. Whomever installed that "Bad" battery needs to perform a BETTER voltage drop test and Find the Problem, the one they failed to find the First time!! Well, that would be nice, but that's over 250 miles from here. The best part is, our Ford Ranger Voltage Regulator products start from as little as $16. 5 volts and test good for amps and diode when you first start the truck. The battery went bad in about 6 months (or car would require jump starts all the time). If both fuel and temperature gauges do not work at all, the fuse is likely burnt out. Output current and voltage should meet the specifications of the alternator. Other potential problems are a faulty voltage regulator or a problem in the charging system wiring. Voltage Regulator EnginesAQ170C MD11A MB10A MD1B MD2B MD3B MD6A 60 70 100 120 Tohatsu/Nissan 2. Car Battery Drains Overnight. 9 depending on the voltage regulator installed on your alternator. O'Reilly Auto Parts carries high quality parts to complete your repair. If you find your Nissan Voltage Regulator can't work normal, just repair it or come to our website. Replaced alternator have same problem. Check out free battery charging and engine diagnostic testing while you are in store. It’s either a bad motor or a broken regulator that’s causing the motor to stall. How alternators work In the early days, cars used generators rather than alternators to power the vehicle's electrical system and charge the battery. 2008 Nissan Pathfinder 127 Days in Yard. Should I just replace the voltage regulator and get it over with? If so, how much would I be looking to spend for the part? The battery can't be the problem seeing as to how I just replaced it with a new Optima red top. The regulator/rectifier module performs two basic functions. A simple fix for this problem is to find an 8VDC three-pin TO220 type voltage regulator and solder new wires onto it, then use that instead of the original Nissan part. Toyota Alternator Voltage Regulator Schematic A number of bosch voltage regulator wiring diagram are for sale to free although some are payable. See this example, where the cable broke and the power window stopped working. These Test are "Meant to be a Guideline". You should get around 13. It looked like the entire rectifier assembly had been overheating, but I put that down to the shorted diode. System Voltage Malfunction. The common problem is that the wiring is done correctly but the result is a car that won't shut off even when the ignition switch is off and the key removed. Or you are a pupil, or maybe even you who just wish to know regarding Motorola Alternator Regulator Wiring Diagram. Check the alternator belt and tensioner. Alternator/generator/regulator Problems of Nissan Maxima - part 1 Nissan Maxima owners have reported 63 problems related to alternator/generator/regulator (under the electrical system category). 3 volts and then will continue to drop until the battery is dead and will stall. Simply put, the voltage regulator makes a more even voltage output and thereby suppresses a certain range of fluctuation. This voltage will be maintained when the battery is fully charged and the electrical load is low. Help With Those Troublesome EGR Valve Codes! Today I'd like to throw some thoughts out on how to check a car's EGR Valve and related EGR system components for proper operation. (alternator and voltage regulator) are in proper working condition, simply push-start the car and kick it over, then drive long. If voltage is not present on "F" terminal, check. ECM not communicating with alternator's voltage regulator. If you're seeing the toggling voltage, the problem is in the window regulator. Get the best deal for Voltage Regulators for Volvo XC70 from the largest online selection at eBay. Charging System Basics. alternator : voltage regulaator vs ic regulator hapi new year po mga sirs i'm an owner of revo sr 2004 model dieseli went home last xmas sa nueva ecija and upon returning home d2 sa. This article is broken down into six sections: What is a charging system. Repairing Charging System Problems. Trying to find information about Ford External Voltage Regulator Wiring Diagram? you are right here. This is the only test needed to tell whether the regulator is good or not. Still, using a few simple tests at home that show you how to test an alternator, how to inspect a battery, if necessary, and check a drive belt will help you pinpoint the cause of the problem. Now I make them up out of a LM317 or LM350 IC and a variable resistor so they can be adjusted to any voltage that may be required (good for setting 'normal' on the temp gauge). So, is it likely / possible that this is the voltage regulator going bad or something else, and if something else, what might cause such an intermittent problem, albeit one that seems to be gradually getting worse? Any suggestions / advice is appreciated. Get the best deal for Voltage Regulators for Volvo XC70 from the largest online selection at eBay. Automotive Voltage Regulator 12v Denso Alternator Regulator Gyro Stabilizer For Cameras , Find Complete Details about Automotive Voltage Regulator 12v Denso Alternator Regulator Gyro Stabilizer For Cameras,Automotive Voltage Regulator 12v,Denso Alternator Regulator,Gyro Stabilizer For Cameras from Voltage Regulators/Stabilizers Supplier or Manufacturer-Zhejiang Yiyuan Electric Co. This is sufficient to recharge the battery safely while protecting the electrical circuits. If the regulator detects a problem, the regulator will ground the generator turn on signal circuit, pulling the voltage low. They can usually test the battery whether it's in or out of the car, although in some cases, if the battery's voltage is low, the battery may need to be charged before running the test. But if the battery reads over 15 volts or less than 13 volts, then there might be a problem with the voltage regulator, the wiring or the alternator. Voltage regulators are commonly found in vehicles and other electronic equipment. This is the only test needed to tell whether the regulator is good or not. The battery went bad in about 6 months (or car would require jump starts all the time). I have a 2002 GMC Sierra 6. The battery should be fully charged and connections kept clean and tight. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. Order now!. Until recently the easiest way to tell the systems apart is by looking at the plugs that connect the stator to the regulator. These Test are "Meant to be a Guideline". Alternator/generator/regulator Problems of Nissan Maxima - part 1 Nissan Maxima owners have reported 63 problems related to alternator/generator/regulator (under the electrical system category). Since new alternators continue to over charge the battery, the problem could be an external voltage regulator. This test should be performed whenever an overcharging or undercharging problem is suspected. For example, voltage at the motor side of the connector may read 11 volts, with the switch turned to on. alternator to deliver its rated output of voltage and current. The SUVs could run out of gas unexpectedly, increasing the risk of a crash, says the National Highway Traffic Safety Administration. If charging system output voltage on your Nissan Altima is not within spec, and testing indicates the voltage regulator is at fault, we have the quality replacement. We were working on a 1994 Nissan Sentra that kept killing the battery. The PCM controls the charging system to a certain extent on these vehicles. If system voltage is 12 volts, we have resistance in the circuit. What does that mean? This generic powertrain/engine diagnostic trouble code typically applies to all 1996-newer vehicles, including but not limited to Hyundai, Toyota, Saab, Kia, Honda, Dodge, Ford and Jaguar vehicles. By National Quick Start Sales (alternatorman) What is an Alternator, How does it Work and what does it do, How do you tell if it's working and what to do?. Check the voltage sense line to the logic module. The best part is, our Mercury Grand Marquis Voltage Regulator products start from as little as $16. I recently purchased the vehicle for my wife. My car is a 1979 V12 Jaguar. Browse our daily deals for even more savings! Free delivery and free returns on eBay Plus items!. If the car isn't driven for 2 daysthe battery will be completely dead. everything tested points to the voltage regulator. What are the symptoms of a bad Alternator Voltage Regulator? Symptoms of a bad voltage regulator might include a dead battery, dim or pulsing dash lights, or erratic engine performance. - Battery is not charging. Our exclusive unique External Voltage Regulator kit was developed buy us to solve the problem of computers where the voltage control has failed in the computer yet the computer runs the vehicle just fine. If the motor is good, you should see some movement or hear some noise coming from the motor. Take time to look at the service information. A tube inside the gas tank could be in the wrong place. I Have A nissan pathfinder (2006) And As I Was Driving Along Around 50mph, Everything Died. It is a NEW and CURRENT problem for me. On cars with carburetors (phased out through the 1980s), the most common problems include the distributor cap and rotor. Any time problems occur with the vehicle charging system, immediate attention is required. One of the first symptoms of an issue with the voltage regulator is dim or flickering gauges. If the voltmeter reads between 14-15 volts then the battery is normal. The test involves testing the resistance between the case of the alternator and one of the voltage regulator's pins with your multimeter in Ohms mode (to find out if the alternator is the one causing the P0620 or P0622 diagnostic trouble code). Buy a genuine Mercury Quicksilver or aftermarket part. They even work on stupid Toyotas that have the voltage reg built into the fuel gauge assembly. 5 V: with the vehicle stationary, the engine is unloaded and a high rail pressure is not required to maintain its speed. The voltage regulator provides power to the gauges, and can cause it shine dimly or flicker if it has. That rectifier/regulator is on a LOT of Mercury motors for a lot of years. i recently had the same problem with my car but i didn't pay 52$ per voltage regulator though. 5 Volts as is needed by the rest of the electrical system. The first test I was only getting 12. B– connections on alternator Both ground cables must be connected together at battery ground potential when alternator is installed in vehicle and dur-ing operation. This is an article showing how a user how can test a voltage regulator to see if it is good or defective. It could be that your voltage regulator is out. Finding current at the motor, below system voltage, suggests high resistance in the circuit. SOURCE: 1988 nissan sentra fuel and temp guage voltage regulator. Get the best deals on Voltage Regulators for Nissan Pathfinder when you shop There seems to be a problem serving the request at this time Voltage Regulator. "If the wiring is all original, check two things. You could be a service technician who wants to search for referrals or fix existing issues. Voltage regulators are commonly found in vehicles and other electronic equipment. The voltage reading should be between 12 and 13 volts. DC Buck Module, DROK Adjustable Buck Converter Step Down Voltage Regulator 6V-32V 30V 24V 12V to 1. i tested it with my volt meter when it died and it read 11. 8L, Regulator, Brushes, Bearings - 11577RK. A number of symptoms can develop if the voltage regulator fails to deliver sufficient voltage. You could be a technician who wishes to try to find referrals or solve existing problems. Then after about a minute or two will drop to 12. emissionwiz is wrong. In other words, the faster it spins the more voltage goes into the car's electrical system. Your alternator has a bad voltage regulator. If the voltmeter reads between 14-15 volts then the battery is normal. If the voltages are both high (accessories off and on), the alternator may be bad. Alternator problems manifest themselves in various ways, depending upon the particular failure. Output current and voltage should meet the specifications of the alternator. Once I accelerate, it goes off. That's dangerous. If the fuel pump starts, it indicates that the fuel pump, power supply to the fuel pump, and wiring from the relay panel to the fuel pump are good. Solid state unit fits the following models: Nissan (Datsun) 240Z 1973-1975; Nissan (Datsun) 260Z 1973-1975. The voltage output is controlled by the IC regulator. Brief Description on 7805 Voltage Regulator IC. You can easily test the voltage by connecting a voltmeter to your battery while the engine is off. The voltage regulator's purpose is to monitor the battery voltage, in which it will maintain a predetermined charging system voltage level. The regulator also controls the current. Both checked out OK. Mercury Marine xr-6 ignition coil/voltage regulator parts. The voltage regulator provides power to the gauges, and can cause it shine dimly or flicker if it has. damage to the regulator will be the result. NISSAN PATHFINDER Electrical System problems : 21. Buy a 1974 Nissan 620 Pickup Voltage Regulator at discount prices. alternator to deliver its rated output of voltage and current. The charging system is driving me crazy. 63 tested after charge 12. You checked continuity of the wires from the sensor to the gauge and the output from the current voltage regulator to find out that it outputs the wrong voltage, none at all or it's fluctuating. Warning lights, unpredictable engine performance and dimming or pulsating lights are all signs of a faulty voltage regulator. Bad outer and inner alternator bearings (large and small silver cylinders in the cutaway image above) can produce a whining noise. Comes with Voltage Regulator. It could be that your voltage regulator is out. I'll be away from my Jeep for a couple days but will be able to tinker more when I get back. The first test I was only getting 12. i let it got. The replacement regulator may not look like this at all. In case the Nissan Voltage Regulator is damaged or broken, you should find ways to repair it or look for replacements if it's already beyond repair. While the alternator is built for the tough work, after some time, the bearings can go bad. They are usually designated by amperage out put such as a 22- amp or a 32-amp system. This database includes information received by NHTSA from consumers either directly or as recorded by the Vehicle Safety Hotline. Mercury Marine electrical voltage regulator kit(815279a 4) parts. As you add electrical load by turning on more accessories, the voltage will. Lower Vehicle Voltage On the other hand, if voltages get too low, you will have a warning light in your instruments panel and while the problem is solved, the ECM will compensate for the low voltage (until certain level) to keep sensitive areas, like injector opening time and ignition working right to be able to keep the engine running. N3243 regulator also provides limp home capability when regulator detects a problem in the alternator/ regulator. i let it got. Take the car to an. Typically, a voltage regulator is built-in into the alternator. I got a 97 nissan 4x4 pickup with the 2. Mercury Marine xr-6 ignition coil/voltage regulator parts. Automotive Voltage Regulator 12v Denso Alternator Regulator Gyro Stabilizer For Cameras , Find Complete Details about Automotive Voltage Regulator 12v Denso Alternator Regulator Gyro Stabilizer For Cameras,Automotive Voltage Regulator 12v,Denso Alternator Regulator,Gyro Stabilizer For Cameras from Voltage Regulators/Stabilizers Supplier or Manufacturer-Zhejiang Yiyuan Electric Co. This is a precision device with magnetic coils and moving contact points. The regulator provides for constant output of voltage, and the mechanical original type are prone to inconsistent output, usually cooking the battery. When the engine is running it reads as much as 19. Was replaced by a local alternator shop, no idea what brand VR they installed, but the lights are now starting to flicker a bit, and I figure I need to do it myself this time. Voltage drop testing is handy for finding the source. The regulator/rectifier module performs two basic functions. I recently purchased the vehicle for my wife. If charging system output voltage on your Nissan Pathfinder is not within spec, and testing indicates the voltage regulator is at fault, we have the quality replacement. The voltage regulator also contains fault detection circuitry. First, unplug the voltage regulator and see if the engine shuts off with the key as normal. What could be the problem? Voltage Regulator. Inspect the fuse. If it returns, then either the alternator or battery is faulty. there is a voltage LIMITER located behind you gauge cluster. a bad voltage regulator battery or what but. We found what the problem was, and we made this video to. The voltage output is controlled by the IC regulator. When system voltage is below the setting of the voltage regulator, then the regulator causes the alternator to produce power until voltage reaches the maximum setting of the regulator. Reconnect the electrical connector to the motor and try operating the window. Put on portable battery pack and got to friends house--nice invention! Battery is 6 months old. There were some bad connections in the old wires and one of them was a fuse link that had to be replaced. It looked like the entire rectifier assembly had been overheating, but I put that down to the shorted diode. Is the voltage regulator and alternator all-in-one or are they separate? I need to find out so I can get this car up and running for my son. I Have A nissan pathfinder (2006) And As I Was Driving Along Around 50mph, Everything Died. Charging System Basics. If the regulator detects a problem, the regulator will ground the generator turn on signal circuit, pulling the voltage low. 8L, Regulator, Brushes, Bearings - 11577RK. It will start up and I can. This database includes information received by NHTSA from consumers either directly or as recorded by the Vehicle Safety Hotline. Replaced battery and alternator on 1994. Dim or flickering gauges. If you would like to have your battery tested for free, bring your car by Nissan 24 in Brockton, MA, and ask for our service department. I own a 2005 Nissan Altima which has been having alternator/battery problems for past 1 year. Drove 10 miles and it died in transit. Testing an alternator and checking output connection can cause a sudden surge of voltage that will damage the alternator or the regulator. Both will need to be tested to see where the fault lies. B– connections on alternator Both ground cables must be connected together at battery ground potential when alternator is installed in vehicle and dur-ing operation. But if the battery reads over 15 volts or less than 13 volts, then there might be a problem with the voltage regulator, the wiring or the alternator. I've checked cables to see if something is loose and not found anything. 5 volts and 14. 2008 Nissan Pathfinder 127 Days in Yard. If both fuel and temperature gauges do not work at all, the fuse is likely burnt out. It has an internal voltage regulator. ANB5044 Product code. Voltage Regulator EnginesAQ170C MD11A MB10A MD1B MD2B MD3B MD6A 60 70 100 120 Tohatsu/Nissan 2. As part of your wiring checks, see the section "Troubleshooting for Unusual Charging System Voltage Drops" below. This might also cause you to overlook critical problems. Warning lights, unpredictable engine performance and dimming or pulsating lights are all signs of a faulty voltage regulator. power excitation, it is derived from three phased permanent magnet generator (PMG) to isolate AVR. The problem is the alternator will charge at about 14. Replaced with rebuilt alternator. The PCM controls the charging system to a certain extent on these vehicles. Replaced battery and alternator on 1994. Output current and voltage should meet the specifications of the alternator. 94 Nissan Pickup Won't Start Older Pickups -Battery voltage is good. Toyota Alternator Voltage Regulator Schematic A number of bosch voltage regulator wiring diagram are for sale to free although some are payable. A tube inside the gas tank could be in the wrong place. I built the circuit it two sections because the 7805 heats up very easily and can create problems in the long run. Manual Alternator Voltage Regulator Test Follow these instructions to check your electrical charging system. If the voltage is over 13. The generator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged. This part reduces and controls voltage to the instrument gauges in the instrument panel. I'm going to recharge battery but I don't think thats the problem. It looked like the entire rectifier assembly had been overheating, but I put that down to the shorted diode. Alternator Rebuild Kit for 1995-1998 Nissan 200SX, 1998-1999 Nissan Sentra 2. But I seen a relay or 2 there, maybe its one of those. Great little car. On my 73 I had to make a new wiring harness for the alt-regulator-battery circuit. The regulator provides for constant output of voltage, and the mechanical original type are prone to inconsistent output, usually cooking the battery. Buy NEW VOLTAGE REGULATOR FITS NISSAN TRUCK 521 620 PICKUP 4 CYL 1. Don't try adding a resistor or whatever. I've got mine from Summit part #SUM-800160 (60psi) $19. Because this DTC references a circuit problem, you can use a DVOM (digital volt-ohm meter) to diagnose this problem. Shops report that Nissan Alternator Problems can sometimes be traced to an intermittent in the plug that goes into the voltage regulator in the alternator. By the way, can I take off the VR, without removing alternator from car. This may cause the vehicle to experience dimming or pulsating external systems, such as headlights and dashboard elements. I Have A nissan pathfinder (2006) And As I Was Driving Along Around 50mph, Everything Died. Clean the points and put it on. If charging system output voltage on your Nissan Pathfinder is not within spec, and testing indicates the voltage regulator is at fault, we have the quality replacement. So, is it likely / possible that this is the voltage regulator going bad or something else, and if something else, what might cause such an intermittent problem, albeit one that seems to be gradually getting worse? Any suggestions / advice is appreciated. Restarting engine will reset regulator. The Voltage Measurements above may not be accurate in all cases. Shops report that Nissan Alternator Problems can sometimes be traced to an intermittent in the plug that goes into the voltage regulator in the alternator. Replaced the battery and in the parking lot and had the gentleman test the charge. This is usually a part of your alternator. -Drove to autozone for free checking, ran the test and said my battery is good and that it was the voltage regulator with problems - Been driving it still working fine no problems so far - Anyone knows is it the battery or alternator?. The 2003 Nissan Altima has 1 NHTSA complaints for the electrical system:alternator/generator/regulator at 19,500 miles average. They generally last about 10 years of normal driving. I got a 97 nissan 4x4 pickup with the 2. Anyways, good to know that it works again now. Was thinking of changing voltage regulator. If there is no change, the problem is a weak fuel pump or a restriction in the fuel line such as a plugged fuel filter. OMB Warehouse - Go Kart Parts and Mini Bike Parts. If it returns, then either the alternator or battery is faulty. Both checked out OK. But I seen a relay or 2 there, maybe its one of those. Check that the regulator plastic cover is not cracked — which may allow moisture into the unit—and that the regulator has not become corroded or damp where it mounts to the body. 5 0n the meter,now with new regulator I am getting between 14-15. I'm not sure if it's the faulty alternator or I have to look for anything else before I take the alternator off again. If the fuse is good, the instrument panel voltage regulator may be bad If both fuel gauge and temperature gauge read incorrectly (high or low) or fluctuate, the problem is likely the shared instrument panel voltage regulator. Too many things can go wrong. Voltage Regulator products. The PCM controls the charging system to a certain extent on these vehicles. 1975 NISSAN 280Z Voltage Regulator L6-2753cc 2. Since new alternators continue to over charge the battery, the problem could be an external voltage regulator. We also offer a full selection of electrical terminals to complete the job. 2 truck off,(50%charged) but I still never had an issue during starting. alternator to deliver its rated output of voltage and current. This diagnostic trouble code (DTC) is a generic OBD-II powertrain code. This test should be performed whenever an overcharging or undercharging problem is suspected. My battery was 12. They can usually test the battery whether it's in or out of the car, although in some cases, if the battery's voltage is low, the battery may need to be charged before running the test. It's reasonably easy to build a regulator in the lab, but getting one to work consistently in the hostile environment of an auto engine is tricky. This is the only test needed to tell whether the regulator is good or not. It has an internal voltage regulator. That's dangerous. My car battery was past warranty so I had the battery replaced about a year back. Re: Voltage Regulator/Rectifier Problem?? I doubt it's your rectifier/regulator causing the original running problem. Simply put, the voltage regulator makes a more even voltage output and thereby suppresses a certain range of fluctuation. How to Test a Voltage Regulator. This also causes the ECM to set the P0620 code. What could be the problem? Voltage Regulator. We also offer a full selection of electrical terminals to complete the job. 0L 2 BBL Vin L20B. One part of your Nissan Pathfinder is the Voltage Regulator. In this instruction,car-auto-repaircom will show you guide on Opel Astra J 1. Order now!. 4L 2 BBL Vin A14 1976 NISSAN F10 Voltage Regulator L4-1393cc 1.