Ecu controlled alternator. 8 mx5 mk1 alternator to solve our issue.
- Ecu controlled alternator Jan 3, 2023 · The alternator is ECU controlled. Aug 10, 2015 · Im looking for a bit of advice. The stock alternator control works at around 14. The stock unit was wired into the ecu so im assuming it was controlled to some degree. I worked with Jay and was able to disconnect the wire on my 2011 M56 Sport. 5 volts of the target alternator control voltage but is still showing as a fault on the alternator control. 5 V. Members; 174 ECU model: WRXLink (V10) Serial Number: Dec 11, 2012 · Because of this ECU controlled alternator output, he stressed I'd need a DC to DC converter (incl a shutoff solenoid) which retails for about $500 (Australian). The target alternator voltage (V). 3-0. How is the computer used to control an alternator? Terms in this set (10) Tech A says that the computer can be used to control the output of the alternator by controlling the field current. May 14, 2015 · It wires directly to the GEN-CON terminal on the alternator. 8 V - 30% 14. 0v with led lights all around and ac on full blast, not bumpin my 2 12" subs. Always use a basemap when using a Plug-In as things such as Alternator control will already be configured for you. I know on Gs and many QXs owners have successfully disabled the ecu controlled alternator voltage system by pulling a wire. We plugged everything in and still no alternator working. He did comment though, that if the alternator *WASN'T* ECU controlled we'd be able to get away with using a far cheaper unit (ie. Not having that input will not damage the alternator. If you build your own then it's an extra board. When the truck is hot the PCM supplied voltage to the alternator drops to 1. 6v. Jun 16, 2023 · It is not an ecu controlled alternator in these. I know evos have an ecu controlled ecu so this may be similar. . On the older basic models the control was simply hooked up to the brake light circuit, which boosted the alternator output when slowing down. 8 mx5 has the issue with the ecu Controlled alternator so we went for a 1. Later model vehicles have ECU-controlled alternators and testing of this type has been a challenge. Minimum duty to be applied to the output. If you see the voltage dropping to under 13V you most likely have an ECU controlled alternator. 05:16 Sep 13, 2019 · As we all know, Mopar truck SBEC/ JTEC/ JTEC+ and probably all the newer engine/ power control modules use an internal voltage regulator located in the control module for the alternator. The alt control values in the base map came from me testing on two NB2 cars and they both controlled batt voltage nicely, significantly better than the factory ecu. With the wire fixed the idle valve was a lot quieter as well. Feb 10, 2021 · A smart alternator, also referred to as a variable voltage or ECU controlled charging system, runs at a lower voltage to a traditional alternator and then increases the voltage dramatically when the driver lifts off, this high voltage (around 17VDC) quickly charges the battery. Yes the MK2 has ECU controlled alternator. 6 while driving. (By the way, worn-out brushes are a common cause of alternator failure on computer-controlled Chrysler systems. • Excitation PWM duty cycle range from 0% up to 100% • Full digital and fast PI regulator • EEPROM for customization to the target application The alternator will continue to charge even when hot until the engine is shut down. What do you think about that? Dec 15, 2021 · Exactly how the regulator works is application specific, but the key point is it limits the voltage the alternator can generate; it doesn't regulate the output voltage (or current) from the alternator. If you created a fault it started to charge with 14. The factory ECU would just tell it to reduce voltage under some cruise conditions to save fuel and emissions. Control Frequency: 78 Hz. Also take care of my wife's 2016 QX60. Jul 29, 2021 · Hello all. Nov 3, 2004 · The LIN serial interface is used by the engine control unit (ECU) to transmit charging voltage set point from 10. For our Plug-Ins that require alternator control such as late Mazda MX-5s, the Plug-In base board already has all the pull-ups etc as required. variable voltage alternator. ) But if the other field terminal measures battery voltage, continue Sep 13, 2017 · Hi Guys Time for another question on my ECU install, the alternator in the 99+ MX5's have charging controlled by the ECU. at times (including idle) i will be at 14. Some people have developed hardware boards that specifically handle this feature Others have developed a PWM solution Jan 9, 2022 · The K20 alternator works fine without the ECU connection. I think the original starter motor was weak and it drew WAY too much from the battery, so no-start was a regular occurrence. One is disconnect the wire from the IPDM to the alternator. Aug 16, 2015 · This is for an Mazda RX8 P/D ecu controlled. I'm hoping someone can help with this. Jun 26, 2020 · Smart charge alternators are controlled externally by the ECU with information being sent between the two via the communication cable as a signal. Mar 14, 2021 · The alternator’s field current is controlled by the voltage regulator. Even with the aftermarket high output it's getting regulated to 13. The Ford ones default to ordinary charging rates when disconnected from ECU. and other guy told me my car is may be ecu problem, he tried to reprogram it but cannt so he said I should change a ecu because ecu said alternator Mar 8, 2010 · Not working (controlled by Stock ECU) - Alternator control (PWM not possible) - CAN integration with the rest of the car (cluster, ABS etc. I've wired the alternator up so its now under ecu control and this run proved it works. As far as I’m aware there isn’t a suitable output from the ECU (maybe a spare IGN output - I’m not sure if they’re 12V or 5V). Mar 29, 2011 · Hi I do need some help here, my car is 2004 mazda 6 luxuy sport GG1 . The ECU can control the injection timing to control the emissions, adjust the output voltage, and even turn off the alternator. Anyone know what wire it is on a 17 Q50S? There are supposedly two methods. Edit: Yes, as explained above, the ecu can turn the alternator on and off. This is often called the ECC, ECM, EEC, or PCM. To do this, we need a tester that will provide the right signal according to a given standard. For example, smart alternators are commonly found in T6s, Transit customs, Renault Masters and Mercedes Sprinters, amongst most other new vehicles. The flywheel voltage is within 0. Mar 3, 2003 · From the 2G Tech manual: GENERATOR G TERMINAL The engine control module limits the generator output current by duty control of the continuity between generator terminal G and the ground. Especially MS and the recent plug'n play Since 1987 for Dodge and Chrysler and 1991 for Jeep, vehicles have external regulator alternators that are controlled by the Alternator Voltage Control Module inside the Engine Control Unit, ECU (computer) . As a result, this allows for much more variability and control over the voltage produced by the alternator. Without ECU connection it just charges at normal voltage all the time ~14. Alternator Control IC with LIN Interface Features • Single-chip alternator control IC • High-side n-channel DMOS output stage with RDSON of 60 mΩ typ. (at 25°C) / 110 mΩ max. What Does ECU Controlled Alternator Mean? Electronic Control Unit, meaning, the alternator is controlled electronically and monitors the electric load. Which pin in alternator is the control pin, and what sort of signal that pin would require to give the correct alternator voltage? Mar 30, 2014 · On many cars including my 99 mx5 the alternator charge circuit is controlled by the ecu. 8v after a while. 3 swapping to a old model 350 running carb and basics but the alternator is ECU controlled how do I get around that. Usually the circuit is disabled at low rpm so as not to charge during cranking. kaptainballistik. Is there anyway in which the alternator charge can be controlled by the ecu. It always charged with 12. The controller has 5 wires: - Disable, which I could connect to a crank-ground but I chose not to - Alternator field control, the grey/red wire from the alternator connector Jun 8, 2012 · Hi No it's another aftermarket ECU and yes for a MR2 swap. They are ECU controlled for the application of sealed batteries with Cadmium (I think) at low temperatures and can be charged at eye watering rates but for a very short time. Do you have the ability to provide PWM signal to the alternator? In a more modern setup you might find the alternator output is controlled by the vehicle ECU. 7 V to 16 V, load response control ramp and cut-off speed and the field excitation Firstly, a s a rule of thumb, smart alternators (also referred to as a variable voltage or ECU controlled charging system) are common throughout modern vans (2015 onwards). The alt_duty parameter logged in the 30 minute graph below (ambient temp' 20C, lights and A/C both off) means 0=alternator engaged,100=alternator not engaged. May 7, 2020 · Our 2. g. Depending on your alternator you may need a 5v/12v pull-up when using a Wire-In ECU. A multimeter was sufficient to tell you if an alternator was alive or dead when they were single voltage, but it’s a different story with the alternators now universally adopted by most car makers. Aug 12, 2017 · Sadsixty1 wrote: I was checking an 07 focus for charging issues, i'm getting battery voltage at the gencom wire with the pigtail plugged into the alternator this seems like a short inside the alternator (remanufactured). I have a high output alternator, pushes about 200A. I gain. 2v. After a lot of reading my old alternator without the internal ecu gets data from the ecu but the mega squirt 2 won't control pcm. I bought a stand alone controller and the wiring seems pretty straight forward, except for one wire. Pin 1 is the monitor circuit and isn't needed. Such a device is the Altalyzer. Now I struggled to find information here about this for the MX5's, but did find some info on Haltech's forums on how they control the alternator charging. Alternator charging voltage will vary greatly in a smart charging system. The main difference is the alternator spins the field coil, the brushes don't need to carry so much current and slip rings instead of segments for almost no electrical noise - later designs had the field coil stationary as well, coaxial pole pieces coupled the flux to the rotor. For those of us wanting to charge a second (auxiliary or leisure) battery whilst driving this presents a problem because traditional split charge systems cannot be used. Later and more advanced models have a connection to the ECU. Smart alternators have their output voltage controlled externally via the Engine Control Unit (ECU) rather than by an internal voltage regulator as found on traditional alternators. 0 V - 34% 14. Pin 2 is the PWM signal and is needed for the alt to charge. I have upgraded grounds and battery to alternator wires. When various conditions are met, the alternator turns off and this re Jun 1, 2008 · but perhaps its possible to regulate the alternator output through kpro or a reflash. An alternator diode is being tested using a DMM set to the diode check position. 8 mx5 mk1 alternator to solve our issue. $150 Aus) Also known as an ECU-controlled alternator or a variable voltage alternator. Pin 1 and 2 are how the ECU controls charging voltage and monitors charging voltage (GEN-MON and GEN-COM). Whether this is a binary (on/off) signal or some value between 0V and Max V will depend on the system. Pin 3 is +12v battery. Jun 21, 2020 · Stock alternator with new wiring to the control plug and an upgraded main power wire was putting out 13. The reason why manufacturer have replaced traditional alternator is: May 25, 2022 · After replacing my starter motor, all my battery/alternator problems magically disappeared. Jun 20, 2023 · You were right on the money Adam, broken wire right at the ECU header on pin 53. I-value in the PI control regulation. 5 V - 42% Replace the alternator if voltage at the other terminal is 0. 3v or so to the cranking (start) battery. It gives the ability to check alternators Jun 26, 2024 · A cheap "amp clamp" is a good tool for diagnosing if it is excessive draw or if the alternator is not providing rated current. 5V then it's likely that you have a smart alternator. P = Phase = electrically connected to stator, monitor alternator field D = Driver = used to control the output of the field control unit by varying base current on a transistor which in turn varies field current thereby controlling Alternator output and voltage. Jan 9, 2012 · Alternators on Hondas have long been controlled. P-value in the PI control regulation. 3. That way the control quality would be greatly improved in all conditions. on engine rpm (and lots of other factors) it would be very nice to have a table based Base value for controlling the alternator output instead of just having a fixed DC. When folks install a standalone on these cars, or other cars that have similar alternator ECU control, do they retain that functionality? I'm working on setting up an Emtron for an Evo8. P gain. Couple of ways I’ve thought of controlling the alternator: Switched 12V to a DC-DC converter, 5V from the converter to the alternator Oct 10, 2024 · One of the technologies that has been around for several years, but which is now becoming standard on new vehicles, is the 'smart' or 'intelligent' ECU-controlled alternator. and use just an old chevy alternator?? Dec 13, 2023 · Which alternator do you actually have? You show two different types here. A smart alternator is an alternator which is controlled externally by the vehicle’s ECU (Electronic Control Unit). Mar 8, 2010 · I have an aftermarket ECU which does not control the alternator of my NB. Since the problem is the ECM is controlling the alternator and it doesn't kick on until after 8 miles (as you mentioned), you can disconnect the wire to the alternator and it will always be on. Alternator is working but it gives too high voltage as ECU is not controlling it. max Nov 17, 2014 · Hi guys, i searched but didnt find, is there way to control alternator with v88? alternator need pwm signal to maintain desired system voltage of course load should make no difference in system voltage. Flashing the ECU may not be necessary or effective in this situation, as it is primarily responsible for controlling engine performance and emissions, not the electrical system. Its on a ford duratec 30 V6 engine. Feb 5, 2024 · My alternator is a P-D type. Sep 19, 2022 · The wire going from pin 76 on the IPDM to pin 5 on the alternator is the offending control wire: the 2020 and above alternator will work without ecu communication Aug 16, 2024 · Since the needed DC% for regulating voltage also depends e. Oct 24, 2020 · The 2005-2009 H6's have an ECU controlled alternator where a signal allows the alternator to reduce generation to decrease engine load. as far as i understand the gencom and genmon are signal wires and shouldn't see battery voltage, is that correct? Feb 3, 2024 · Voltage regulation is inbuilt in the alternator and is not in question. This includes most 2007+ GM engines and most 2005+ Ford engines. This means the field circuit opened up somewhere inside the alternator; the brushes probably wore out. 5V. Megasquirt PNP will control the alternator on the mk2. This also happens when this wire is unplugged from the alternator. automatetraining. The regulator can be controlled by various mechanisms, including ECU control, to meet difference load demands and states of charge, thermal Feb 23, 2015 · Hi, I'd like to control the alternator voltage directly from the ecu; The alternator is Delco Remy CS130; This is my first time doing this, so can someone help out on how to do things, I mean do I need to remove the regulator from the alternator and just control the voltage from the ecu? Jan 10, 2023 · They may also be able to recommend solutions for integrating the additional power draw into the ECU-controlled alternator output. Jun 22, 2022 · However, if the regulator is still external or controlled by the ecu then it will be the field excitation current to control the alternator output. 5 1. and even sometimes down to 12. Something could be done over GP PWM output with gp output table, but than depending on system Oct 18, 2016 · Are you diagnosing the computer controlled charging systems in modern vehicles correctly?Get Better Training - Visit http://www. When it fails, the ECM/PCM should be replaced. The P terminal requires a 0-5V PWM at 250Hz to initiate charging and control the voltage output. How far out from target will it throw a fault? The ECU (engine control unit) or PCM (powertrain control module) communicates with the alternator to adjust charging output. The document linked in the V88 forum post shows an alternator with an RLO terminal and no S terminal, so this is an ECU-controlled regulator. <-- Make sure to use the correct frequency of your alternator by checking with the manufacturer. The swift (and most electronically controlled alternators in Suzuki’s ) use a current sense element in the first fuse box to detect current flow out of the alternator which in turn tells the bcm to control output so it A: keeps battery charged, Mar 24, 2017 · The original electromechanical regulator boxes for car dynamos more or less did. Aug 21, 2021 · I have a 1998 s10 4. May 4, 2014 · If first reading is around 14. Our ECU does not control this input. Turns out it wasn't the charging system at all. For the alternator control duty, start with these numbers and interpolate between them: 13. May 20, 2012 · The ECU input to the alternator is used to reduce loading on the engine when other loads (air-con, engine fans, etc) come on. What Is The US Tier 3 (Euro 5) Program? The stock ECU in an Evo8 or a 2G DSM controls the alternator via an ECU pin to regulate engine load at idle, WOT, etc. PWM frequency. Yes you can use an after market ECU. PWM frequency (Hz) to use on the output. com for your Feb 15, 2017 · There's a fix for the alternator issue if you are interested. Min control duty. Former owner of a 2007 M35x. 5-13. Mar 31, 2021 · If your reading is closer to 12. 0v under the same conditions Nov 27, 2020 · 01-05 Miata VVT NA Motor - Alternator I setup a basemap to test function of VVT control and Alternator control. Could go up to or above 15v or could go down to 12. But then fault light was on. VVT works perfectly, alternator control voltage works fine as well but AUX 5 status shows FAULT while its working, reading through the manual it seems that might mean the hardware is no May 19, 2022 · How to check the ECU-controlled voltage regulator? Testing an alternator controlled by the engine controller requires providing it with the appropriate control signals. others at 13. Posted June 21, 2023. 4V and second reading is similar then you have a normal constant voltage alternator setup. Quote; kaptainballistik. 05:03: In these setups, the ECU will be monitoring the system voltage and will send a control signal to the alternator, adjusting its current output up or down to ensure the system voltage level is maintained within certain bounds. So I had to keep my battery at 100%, not 95%. 5 volts or less and the output of the alternator goes to 0 amp and 0 volts when the truck is restarted. Is this a system with voltage regulator in alternator or is the charging system controlled by control unit? I was working on a Ford that had ecu controlled alternator. 122000km My car’s battery light has on for few weeks, I have been to few places and they told me that they been tested my battery and alternator and they all work just fine…. Mar 10, 2022 · This document explains how to control either a GM or Ford alternator that was factory ECU controlled with a PWM (Pulse Width Modulation) signal. ) Future plans: - Water injection control - Anti-lag via valve - EGT Now that the NC platform is so cheap and available I had expected more people going this route. Yes it is a straight swop for a mk1 alternator. (May need to be adjusted to 100) Load Monitor Input: Not clear if this works, but you can probably use the GEN-MON signal for this. Wiring: The PWM Alternator harnesses are designed to be used with a (P-) “PWM –” output from the I/O (8 Pin Jul 18, 2017 · The manual I have contains a fairly detailed test procedure for the alternator which includes a test of the ECU's ability to control the alternator output (by grounding the C terminal) and it does require you to check whether or not the C terminal is grounded before starting - were I in your position I would consider monitoring the voltage at Aug 11, 2015 · Ilya Moderator Posts: 9866 Joined: Fri Apr 23, 2010 11:20 pm Car: 2011 M56x but I spend a lot of time on my 2015 Kawasaki Vulcan S. ngwl hov ppbn hefho fwgyo opk wseezb yafrghty yqzv sgjay
