Map sensor voltage chart. The part number for a compatible connector is provided.
Map sensor voltage chart 3 days ago · Ballenger Motorsports Delphi / GM 4 Bar Style Map Sensor - (US Made) (SNSR-03045) for only $101. 11 in A manifold absolute pressure sensor (or MAP sensor) measures your car’s intake manifold pressure (sometimes called the intake manifold vacuum. 53 I have no idea why it's 14. Installing a supercharger or turbo on your LSX powered vehicle? If your tuner recommends it you may need to use a two bar map sensor for your application. 0 bar boost at sea level. 31psi / 29. I flashed the ECU with those values from the GM stage 2 kit. A MAP sensor may produce incorrect air-fuel mixture. Get Data From the Manufacturer While ideally a manufacturer will have data This document provides technical specifications for a Delco 3 Bar MAP sensor. Can I tap one of the three wires coming off of it and feed it into my analog 2 on my Aeroforce Interceptor gauge? Would anybody know the slope and intercept for Jun 14, 2012 · The only difference between a 2-bar sensor and a 1-bar sensor is that the 2-bar sensor will output near 5v at 29psi instead of 14. The part number for a compatible connector is provided. As of now, I can get a raw voltage, but I don't know what formulat to use to convert it to inHg of vaccum and PSI of boost. 70psi 4. It must be able to measure atmospheric pressure at the lowest elevations, which in some areas is slightly below sea level. 50 bars (i. 67V 12. 5 bar sensor is about US $190. Aug 18, 2020 · Sensors This sensor, like most MAP sensors, has three connections with the engine management system. The voltage varies depending Dec 20, 2021 · In this powerful guide, we will discuss the 3 and 4-pin MAP sensor wiring diagram. This 4 bar MAP sensor offers a linear output in the 0. I have a GM 3 Bar Map and I am having no luck getting the EIO configured to read it correctly in Boost PSI. According to the specs, the GM 3 bar reads the following (pressure is absolute): . 805 psi, average voltage is . 94V when the output is pulled up towards 5V by the ECM (Electronic control module). 5 volts for the given pressure? E4 MAP SENSOR CORRELATION TEST Access the PCM and monitor the MAP (PRESS), EBP_A (PRESS) and BARO (PRESS) PIDs. I Informatin on what is a MAP (Manifold Absolute Pressure) Sensor, its purpose, and how to troubleshoot it. 761 volts (. I hope there are cheaper alternatives to gen3 map sensor. The MAP sensor works off a 5v reference and will change its signal as the pressure changes so most of the time an intermittent connection will cause that code especially if the sensor has been ruled out. Verify if baro pid and map voltage matches barometric pressure for appropriate geographical location using the barometric pressure/map sensor reference chart. 50 bar absolute pressure unit. But when I attempt to enter sensor voltage and move to next, the one I just entered goes to 5. LIMITATION OF LIABILITY: SSI's obligation under this limited warranty is strictly and exclusively limited to the repair or replacement free of charge of such articles as are found to be defective in material or workmanship on the condition that the purchaser gives prompt written notice to SSI of any claim to breach of warranty within the warranty period, and, if requested, returns the Apr 9, 2004 · Does anyone know what the voltage outputs from the map sensor are? want to log vac/boost with my Techedge. 84V 13. Feb 2, 2025 · Yes, a DIYer can test a MAP sensor at home using a multimeter to check for proper voltage and resistance, ensuring the sensor’s functionality. 00psi / 28. 1 to 4. Either the stock MAP sensor or an alternate sensor can be used. The MAP sensor measures the air pressure coming into your Ranger’s engine and sends that signal to the ECM. Jun 12, 2006 · Does anyone have the chart with the map sensor voltages = what psi Looked in the tuning and information thread, but the stock and staged map voltage thread is down If your voltage differs greatly on either test or the voltage change is erratic, the MAP sensor is faulty and will need to be replaced. Does this look right? Range is 264 kPa (40 to 304 kPa) At 40 kPa or 5. The air pressure in the inlet manifold varies from vacuum to a pressure higher than the normal air pressure in case of a turbo charged engine. 3 digit numbers for identification: 1 Bar: 039, 460, 883, 876, 153 2 Bar: 886, 012, 539, 609, 701 3 Bar: 749, 861 TURBO DODGE 1 Bar, 2 Bar, 3 Bar MAP Sensor Voltage Chart 1 Bar Vs 2 Bar 2 Bar Vs 3 Bar Jan 28, 2005 · THE BAROMETRIC PRESSURE/MAP SENSOR REFERENCE CHART CONTAINED IN THIS TSB SHOWS THE ESM'S MAP SENSOR VOLTAGE CORRESPONDING TO A BARO READING IN INCHES OF MERCURY (IN-HG) AND IN HERTZ (HZ). It then outputs a voltage on a third pin which is proportional to the manifold pressure. Jul 20, 2008 · This is for the GM/Delphi 3 bar map sensor with part number GM part #12223861. I have seen one of the GM map sensor reference charts on this forum but the signal is pretty much off compared to the gen3 one. I was using the LS9 MAP so my values in HP Tuners are set for 312. It is used as The car fuel and ignition tables will need to be retuned for the engine to idle as they will still be based on the previous map sensor even though the map sensor calibration is correct. Understanding how the MAP sensor works, and more importantly, how to diagnose its voltage output, is Jan 13, 2025 · Learn about map sensor basics and ideal readings for smooth engine performance. I couldn't get the car to start with those values. Digital map sensors are best tested with an oscilloscope. 7 Bar (Stock) , 4 BAR and 7 BAR Uses OEM K-Series Connector (Same as RSX) 304 Stainless Steel Body - Provides incredible strength Optional Remote Mount Bracket We offer a 1 Year Warranty with all Jul 27, 2025 · Decoding MAP Sensor Voltage: Spotting Faults Like a Pro! (US) The Manifold Absolute Pressure (MAP) sensor is a critical component in modern vehicles. 50 and -11. 01psi 4. 3 digit numbers for identification: 1 Bar: 039, 460, 883, 876, 153 2 Bar: 886, 012, 539, 609, 701 3 Bar: 749, 861 GM MAP sensor Identification I once got ripped off by ordering a 3Bar MAP sensor from some idiot on Ebay---he actually sent me a 1BAR! So. This sensor is responsible for measuring the pressure in the intake manifold relative to atmospheric pressure. 501 - . Nov 21, 2006 · Tech / Misc - HONDA sensors resistance chart. Dec 17, 2019 · It indicates your Ford Ranger’s MAP (manifold absolute pressure) sensor’s voltage reading is outside of the normal operating range. AN102 – Application Note SE-MAP-003 MAP Sensor Configuration (GM 3-Bar Sensor) Release Date 1/11/12 Signal Ground Signal +5 Volt Aug 28, 2013 · Re: GM MAP sensors by pishta » Wed Jan 08, 2014 4:39 pm After sleeping on it, I realized the 0 output on the 1 BAR is exactly 5. The ECU fuel map parameters are based on getting a correct voltage from the MAP for the pressure it is sensing. 091 psi, average voltage is 4. Useful when datalogging or when using a scan tool to watch The 3-Bar Map Sensor The MPX4250AP was supplied with the “turbo†units from the first group buy, and ALL the units from the second and subsequent group buys, is in the Digi-Key catalog on page 1098. It also includes a calibration chart showing the output voltage corresponding to different manifold pressure levels ranging from vacuum to boost. 00psi / 23. Also known as Boost Solenoid, Pressure Sensor, M. 7psi atmosphere already subtracted). First, we assume you have selected the correct Analog input channel that you have wired the MAP Sensors signal wire into, and set it to "MAP Raw" in the Analog Input settings driver. The PCM should be providing 5 volts to the MAP sensor. The stated pressure range is Map Sensor Voltage Chart - They provide information to optimize fuel efficiency, power output and emissions control. You are looking for a voltage between . I have installed a GM 12615136 into my LS1, upgraded to the HPT 2BAR OS I have tried to get the MAP dialed in and having no real luck. The package includes a connector and crimp terminals. ) So, what is normal manifold absolute pressure? What happens if the manifold absolute pressure sensor is faulty? Let’s find out. 25. 7 actually) is going to be approximately 5 Volts, which is the maximum signal source voltage for a common MAP sensor. 00psi / 25. 40 volts out and desended when I put the vacum pump to it MAP Sensor Stock Fieros engines utilize a MAP or Manifold Absolute Pressure sensor. P Sensor, Barometric Sensor, Barometric Pressure Sensor, Manifold Absolute Pressure Sensor, etc. Mar 20, 2019 · The size of your MAP sensor can limit how much power your forced-induction engine can make. 92 volts. Turn the switch to ON and Map Sensor Voltage Chart - Check for short circuit in the wire, connected to the positive terminal of the car battery, or in the wire which turns on and off the power supply. Mar 22, 2011 · Always test before installing random new repair parts. 90V 14. Under Diagnostic Aids Section It suggest to find a similar vehicle and see if the baro is close +- . 044 volts (4. Ben Strader discusses the proper way to size the sensor. So, does that mean I set it up in the software as: MAP Sensor Linear: 250 kPa MAP Sensor Offset: 20 kPa MAP Sensor Linear B: GM MAP Sensor Guide (LS Engines) A practical, picture-heavy guide to LS MAP sensors: what fits, what to buy, and when to step up to 2-bar or 3-bar for boost. 0L Power Stroke Diesel - 6. 00psi / 27. 283v 4. anyone has it? - hello everyone. I hooked this to the vehicle using a 9-volt battery as my voltage source. Check for short circuit in the wire, connected to the positive terminal of the car battery, or in the wire which turns on and off the power supply. The MAP sensor has 5-volt reference and ground inputs and in turn outputs a voltage signal between 0 and 5 volts depending on the pressure it senses. If the stock MAP sensor is selected then the stock voltage to pressure conversion is used - you do not need to enter anything in the Voltage to Pressure conversion section of the tab. Gen-4 (LS3) MAP Gen-3 MAP NA vs. 95 volts ( no load idle ). But look at the voltage reading for the 3 BAR MAP signal at 15 psi, it will be only 3. Sep 2, 2007 · I'm looking for reference charts to different MAP sensors. I use a Max 3 scanner which shows a Hz for the sensor and also an output voltage. you’ll need to ensure the scale is set up appropriately in your tune in order to have it read accurately and not cause problems. Apr 9, 2007 · I used the PDF listed above from powerandsignal and with a quick and dirty spreadsheet I plotted the linear slope for the sensor based on the min and max VOut's of the sensor for the pressures that they gave (20, 40, 160 and 200 kPa). It is possible that Detroit is slightly above sea level, and you can use 12. 94)-14. 70psi Mar 9, 2013 · Where can I find scale info, such as volt/degrees for gm ls temp sensor, psi/ 0-5volt for LS oil pressure , and gm 3bar map sensor scale info for theese sensors? I need this info to configure my datalogger Jan 4, 2023 · A MAP sensor is also a baro sensor, when the key is turned on the ECM/PCM looks at key on engine off MAP voltage and determines barometric pressure. . 914 Voltage range is 4. Jan 19, 2009 · I am doing a project that I am hoping to use the stock MAP sensor. I think my readings are off. Oct 29, 2021 · Determining TorqTune2 MAP Sensor Values CM5-LTS is able to obtain boost readings from any analog 0-5V Manifold Absolute Pressure (MAP) sensor, but it requires the user to provide a few senor-specific MAP Calibration parameters (Slope, Intercept, Atmosphere and Deadband) in order to accurately convert the sensor voltage to boost pressure. The way the chart reads to me is the range is 20-250 kPa. I have AEM oil & fuel pressure, and 2 bar MAP sensors. 8 volts Applications: Universal MAP Sensor 1/8 NPT Inlet Standard K-Series connector (See Below for details) Notes: Available in 1. Sep 10, 2008 · GM 3-Bar Map Calibration by Beast_88_GT » Wed Sep 10, 2008 4:58 am Had another Map Sensor thread awile back but thought this question deserved it's own I finally got the car back up and running with the GM Map Sensor connected. 283v/38. 4 volts. When Idling I get a voltage reader on the scanner of 3. Most vehicle MAP sensors use a 5-volt reference, a signal return and a ground connection. 00psi / 26. The MAP sensor will read a pressure and let the ECU know the pressure it is reading by outputting a voltage signal. Mar 12, 2020 · GM MAP Sensors Identification and information. I had the key on and engine off. Map sensors Verify if BARO PID and MAP voltage matches WARRANTY STATUS:Information Only barometric pressure for appropriate geographical location using the barometric pressure/MAP sensor reference chart. Discover common issues & testing methods now! May 24, 2025 · Are you looking for What Should A Map Sensor Read Key On Engine Off? This question often perplexes vehicle owners and mechanics alike. 53 and not 14. Apr 29, 2022 · The manifold absolute pressure (MAP) sensor measures the air pressure in the intake manifold for the computer to adjust the air/fuel ratio. Even with a functioning sensor the Hz is not as important as the V out signal but if the voltage isn't there then neither is the sensor ! Any time you change out a sensor on your car to one that isn’t factory such as upgrading the map sensor to a 4 bar unit, (such as this fantastic option) adding a fuel pressure sensor etc. To sense manifold pressure, the MAP sensor is connected to the engine via a vacuum hose or tube. 696, [rounds up to 14. A. 914 average) @ 304 kpa Jul 20, 2009 · 6. I tested it with a hand pump and a voltmeter, but not with the car on the road. linear and offset values. Sep 4, 2015 · OK, I searched, read a few threads, and can't find the answer. It’s most commonly caused by a bad MAP sensor, wiring issue, or vacuum leak. I found a schematic for the 3 bar and came up with the numbers below. That means it measure from a full vacuum to 2. I also had 4. 9 bar vacuum to 3. 8 volts between the voltage supply wire (orange) and the ground wire (black). 5psi, and the 2-bar sensor will output exactly 1/2 the voltage at any given pressure as the 1-bar sensor. The MAP sensor reads intake manifold pressure and sends a voltage signal to the ECU. 0162234 4. This wide operating range allows the sensor to accurately measure and respond to a vast spectrum The MAP sensor reference voltage or signal is equal to the car battery voltage. If there in not proper voltage at the MAP sensor it is probably a problem with the MAP sensor itself, or the wire leading to it. How to replace a faulty MAP sensor Jan 3, 2019 · The MAP sensor then varies the voltage according to manifold pressure and sends a return signal to the PCM. This is a GM package 4 bar MAP sensor. Does anyone have a voltage chart that shows exactly which MAP sensor voltages correspond to the amount of vacuum in the intake? Feb 4, 2021 · The map voltage gives a rough indication of valve lash by telling you how much vacuum the engine has at idle. 00V. You could compare those readings on different days and see for yourself that indeed MAP has variances on cloudy and rainy days vs a sunny and blue sky day. The engine managment system provides 5 V of DC power to the sensor and provides a calibrated ground return. Sep 12, 2006 · Hey guys im in a huge rush and i need a quick hand from any of you that might have cross referenced the Gm 3 bar map sensor voltage with its corresponding boost pressure on an excell sheet or something similar. such as ect iat map tps (rpm?) if anyone have it and can post it up itll be gr8. When used as boost pressure sensor, it can measure from -0. 631v At 304 kPa or 44. 1 Bar MAP sensors are used on NA (naturally asperated) vehicles. Manifold absolute pressure = Atmospheric pressure - Intake manifold vacuum Feb 15, 2010 · I'm looking for a chart or the formula to convert a GM 3 Bar Map voltage to PSI, tried searching everywhere but nothing any leads would be helpful. 784 - 5. 7] but it works out on GM's chart every time. Nov 16, 2023 · 2 Bar GM Map Sensors Technical Specifications – 2 Bar GM Map Sensors Voltage Range and Pressure Sensitivity The 2 Bar GM Map Sensors boasts an impressive voltage output range of 0. What am I doing wrong? I have a new 3 bar MAP that came with a voltage/kpa table vs. The actual atmospheric pressure varies by sea level, just keep that in mind. This wide operating range allows the sensor to accurately measure and respond to a vast spectrum of intake manifold pressures, catering to the Jul 1, 2025 · This image shows the voltage chart for the MAP sensor (Manifold Absolute Pressure). It includes a pinout diagram identifying the ground, output signal, and power supply pins. Dec 4, 2024 · Learn how to recognize the signs of a bad MAP sensor and take the necessary steps to clean and test it. 00 volts it says the code is intermittent, If not additional codes are present then refer to Diagnostic Aids. 4911541 PSI Formula for the GM 3 Bar MAP sensor is (V*8. As the vacuum inside the intake manifold changes, the MAP sensor voltage changes. If the engine has too much lean amount of fuel compared to the air in the cylinder, this will lead to improper combustion and in turn decrease engine power. Learn how to connect both properly here! Hello everyone, Im trying to understand the MAP sensor settings for a 2BAR SD tune. The signal voltage is used by the ECU to determine the Learn how MAP sensors measure absolute pressure in the intake manifold and provide a voltage signal to the PCM for engine control. 02V to 4. , up to ~1. pressure for either 2 or 3 bar MAP sensors? I've looked through the entire internet to no avail. 99! Oct 1, 2004 · 1987 - 1996 F150 & Larger F-Series Trucks - map sensor voltage? - I disconnected the wire harness from the map sensor to check the voltage coming to it through the wire harness. 9V, corresponding to a pressure range of 40kPa to 204kPa. Jun 26, 2018 · The MAP sensor can also be used as a transducer when you use a scope and set it to AC voltage. 0L MAP Sensor Output Voltage - I was wondering if anyone had a graph or a table of the linear voltage outputs of the superduty MAP sensor, most ford MAP's output a frequency but the SD's output a 5v signal which is perfect for an analog input on a data logger. The MAP sensor has 5 volt reference and ground inputs and in turn outputs a voltage signal between 0 and 5 volts depending on the pressure it senses. Mar 30, 2004 · Anyone have a chart showing MAP voltage vs. Feb 16, 2024 · Using an OBD2 scanner to diagnose a faulty MAP (Manifold Absolute Pressure) sensor is a straightforward process. Also, ignition on and without the engine running what does the sensor say the MAP is as it should be the same as the factory sensor (barometric pressure will be around 100kpa and will show up in the scanner). The Manifold Absolute Pressure (MAP) sensor is a crucial component in a vehicle’s engine management system. This is a 2. Ill use that as the source voltage and retest the 2 BAR map and see if the voltages are truly proportional with the input voltage, along with a little boost pressure sample from a hand pump. 631 average) @ 40 kpa 4. For those who haven't seen it before, here is the chart for gen3: May 5, 2022 · In this easy step-by-step guide, you will learn how to test MAP sensors with a multimeter and some tips regarding their readings. 5 days ago · To measure the MAP sensor voltage, all you have to do is this, and I'll explain two important points later: Locate the sensor's signal pin and connect the multimeter to it. The voltage is too high. i remember back from 04 that there was a list of all the sensors in hondas. I changed it to my estimated values of 300 linear and 7. The MAP sensor (Manifold Absolute Pressure) measures absolute air pressure in the inlet manifold. It seems to be pretty close to what my vacuum/boost gauge is reading but it is not perfect. I found the specifications (a few voltage -> mbar specs) at this online store's product page. Since that is not over 4. It provides the engine control unit (ECU) with crucial data about engine load, allowing the ECU to optimize fuel delivery and ignition timing. 283v/264kPa = . ? I Dec 30, 2011 · TSB 05-3-1 MAF DIAGNOSTIC SERVICE TIP - VEHICLES EQUIPPED WITH EGR SYSTEM MODULE (ESM) Publication Date: January 28, 2005 FORD: 2003-2005 Crown Victoria, Thunderbird 2005 Five Hundred, Ford GT, Freestyle, Mustang 2004-2005 Explorer, F-150, Freestar 2005 E-Series LINCOLN: 2003-2005 LS, To… Nov 17, 2022 · Not sure who may need this, but this is a handy little chart to help you convert your MAP sensor voltage to PSI (with 14. 286 Nov 20, 2023 · Explore the nuances of Map Sensor Reading at idle kpa in this in-depth guide. What Tools Are Needed To Test A Map Sensor? Some engines only utilize a MAP or Manifold Absolute Pressure sensor. 5 bar above normal atmospheric pressure). This article explains how to test a MAP sensor with an advanced scan tool and a multimeter or voltmeter if you suspect the sensor is defective Sep 12, 2023 · What Is A MAP Sensor MAP Sensor Function MAP Sensor Voltage Chart Causes Of MAP Sensor Failure MAF Sensor (Mass Air Flow Sensor) MAF Sensor Function MAP vs MAF MAP Sensor Symptoms MAP Sensor Replacement Conclusion FAQs They work together in perfect harmony to ensure your car remains functional. 00. I am unable to enter sensor voltage values. Discover the secrets your map sensor holds at a standstill. 88 volts and . Apr 22, 2025 · Does anyone have a voltage chart that shows exactly which MAP sensor voltages correspond to the amount of vacuum in the intake? As a quick check how much did you pay for the 3 bar sensor as it is under $30 US but the 3. thanks We would like to show you a description here but the site won’t allow us. Latest News MAP Sensors (Manifold Absolute Pressure) The Manifold Absolute Pressure Sensor (MAP sensor) measures inlet manifold pressure indicating engine load. For examplefrom the chart below, notive that the voltage reading for a 2 BAR MAP sensor at 15 psi (14. Is the PID voltage within 0. Torqbyte frequently tests popular MAP sensors and Jan 6, 2023 · It doesn't try to establish if the MAP voltage line matches a chart such as you provided or is parallel to it but above or below the chart line. Has anyone out there graphed the stock MAP sensor from 0v-5v and what boost levels are in realtionship to voltage. Does anyone have the correct linear and offset for a 3 bar map? Customer: Is there a chart for the 2008 Acura TL map and barometric sensor pressures related to voltage, or will I need to physically back probe to obtain that voltage? The scanner only displays it in psi. Requires engine management to use (Flashpro/K-Pro/S300/AEM) There are 2 versions for K-Series choose between K-Series and K24Z-Series We offer a 1 Year Warranty with all MAP sensors Map Sensor Voltage Chart - Click Here Map Sensor Selection : A list with predefined MAP sensor and the custom MAP option mBar at 0V (offset): How many mBar has the MAP sensor at 0 Volts (Minimum Value) Jan 22, 2011 · 6. 036" of Mercury (HG) 1" mercury = 0. I had 4. e. I'm guessing the LE5 ecu doesn't work with those numbers. to make sure it didn't happen again, I did some research on how to identify a GM MAP sensor. Genuine GM 2 Bar MAP Sensor. This flexing causes a change in resistance and the circuitry inside the sensor converts this to a voltage ranging from 0. 50V 11. Refer to the MAP sensor voltage table at the beginning of the pinpoint test. The MAP sensor translates the air pressure into a signal voltage that changes with the air pressure. 33V 10. Analyzing live data can help pinpoint irregularities in pressure readings, aiding in swift and precise sensor diagnosis. The signals sent to the ECU is used as one input to determine fuel delivery and ignition timing. Is there a way to calculate the linear and offset values for this new sensor from the attached table or do I need more info? Thanks for your help! Mar 15, 2025 · P0107 – MAP Sensor Circuit Low Input: The MAP sensor is sending a voltage reading that is too low, which may indicate a vacuum leak, clogged sensor port, or internal failure. GM 1 Bar, GM 2 Bar, GM 3 Bar. Hope that makes sense, basically i need an accurate chart of what boost pressure will I just got my car out of storage and installed that 3 bar MAP sensor. Jan 9, 2007 · The MAP sensor output voltage is proportional to the manifold absolute pressure (it's not called a manifold absolute pressure sensor for nothing). Sep 18, 2023 · C6 Forced Induction/Nitrous - LS9 MAP voltage for boost pressure? - I swapped out my stock LS3 map with an LS9 map so I could read pressure with my Novi 1500. Apr 22, 2015 · Does anyone have a voltage chart for the MAP sensor output? I searched, but couldn't find anything on this. 6V to 4. When a MAP sensor fails, it can affect engine performance or turn on the check engine light for code P0107B. The output signal from the MAP sensor and the air temperature sensor are required by the ECU to calculate intake air mass. 0 bar range (absolute pressure unit). 0L Power Stroke Diesel - MAP Sensor voltage ??? - What Should the voltage in to the map sensor and out to PCM I have been getting a CEL with codes P0069 MAP - Barometric Pressure Correlation and P0200 Injector Circuit I tested the map sensor and I got max 1. 5 offset and it started right up. 16V 9. If you bring up MAP Raw DRO in MEITE on any tab, you should see the voltage read from the MAP sensor. Keep your engine running smoothly. Nov 8, 2009 · The flow chart I have asks if the map sensor displays a voltage reading over 4 volts. I have Custom Pressure selected, and psi values entered on calibration curve. Boost (2/3-bar) Linear/Offset Table 2247 (2 Bar MAP Sensor) MAP Voltage = (MAP Output Voltage)- (Offset Voltage) Apr 21, 2014 · The chart below describes the pressure-to-voltage relationship of the stock GM Turbo MAP sensor (2 bar): Manifold Pressure (relative sea level / absolute) 2 Bar MAP Output 14. MAP sensor output based on altitude (Ignition "ON" and engine stopped) GM 1bar, 2bar, 3bar 1 PSI = 2. 12592525, 12615136, 12591290, 2133842, 12594942, 12694725. General Description This MAP sensor uses MEMS technology and Application Specific Integrated Circuit (ASIC) technology, and it is specifically designed for small engine electronic fuel injection system to continuously monitor the manifold pressure or Barometric pressure, and send the analog voltage signal for the absolute pressure measured to the Electronic Control Unit (ECU). Ignition ON, engine OFF. I am trying to write the Aug 19, 2020 · The sensor takes the 5 volt input fro the PCM and sends out an varying analog signal to the PCM. Access the PCM and monitor the MAP (VOLT) PID. If a MAP sensor GM MAP sensor Identification I once got ripped off by ordering a 3Bar MAP sensor from some idiot on Ebay---he actually sent me a 1BAR! So. See a chart of MAP sensor output voltage and atmospheric pressure at different altitudes and conditions. A Manifold Absolute Pressure (MAP) sensor lets the ECU know how much pressure is in the intake manifold at any given time. The information the MAP sensor tells the ECU is applied to tables set to deliver the proper IPW (Injector Pulse Width) and Ignition Timing. 00psi / 24. beukfszyekconybovzrefrqezadjedlwpvykawnykggzqsyvmvadlvurbfcklevuiptahr