Question about 1995 Dodge Stratus

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Map sensor There are 3 wires on the map sensor. I am looking for the color codes of each, mainly the variable 5 volt wire. One is 12 volt, one is negative, and one is around 5 volts. The repair manual, electrical will not help. It's a 95 Dodge Stratus 4 cyl.

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  • Anonymous Mar 13, 2014

    Dodge stratus 2.4 L Map Sensor

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Use a needle such as a sewing needle, stick it into each wire, and use your voltmeter from there.

No need for color codes....

Posted on Aug 20, 2008

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Starter turns over but will not start, the code that is coming up is P0107, MAP sensor. I cracked my injector line and i got fuel, so must be a Air problem


No, I would say that it is a FUEL problem. The Powertrain (or Engine) Control Module (PCM or ECM) uses the MAP sensor input to adjust the pulse-width of the fuel injectors and provide the correct amount of fuel to the combustion chambers. If the MAP sensor signal is too high or too low, the PCM will either shut the injectors off, starving the engine for fuel, or it will open them all the way up, causing the engine to flood.

Diagnostic Test Code (DTC) P0107 is TRYING to tell you that the computer has recognized a problem with the MAP sensor input circuits. THIS is what the problem is! Actually this code is saying that the input is LOW. This can be caused by broken wires, loose or corroded connector terminals, or a faulty MAP sensor.

I highly recommend checking the wiring before going out and buying a MAP sensor. It is that time of year...just this week I have fixed 4 cars that have had wire damage due to rodents getting up into the (WARM) engine compartment and chewing on the wire harnesses.

Nov 05, 2011 | 2002 Volkswagen Jetta TDI

1 Answer

I have a 94 blazer and the check engine soon light came on and shortly after it started hesitating when i would hit the gas


Hi, the problem may be at the TPS or the MAP sensor. First extract the trouble code following instructions below. Then troubleshoot the indicated signals/sensors.


jturcotte_2348.gif



Fig. Fig. 1: ALDL connector-1994 models

Listings of the trouble for the various engine control system covered in this guide are located in this section. Remember that a code only points to the faulty circuit NOT necessarily to a faulty component. Loose, damaged or corroded connections may contribute to a fault code on a circuit when the sensor or component is operating properly. Be sure that the components are faulty before replacing them, especially the expensive ones. The Assembly Line Diagnostic Link (ALDL) connector or Data Link Connector (DLC) may be located under the dash and sometimes covered with a plastic cover labeled DIAGNOSTIC CONNECTOR.

  1. On all 1994 models the diagnostic trouble codes can be read by grounding test terminal B . The terminal is most easily grounded by connecting it to terminal A (internal ECM ground). This is the terminal to the right of terminal B on the top row of the ALDL connector.
  2. Only 1995 models equipped with a PCM use the OBD I system. All other 1995 and later models use the OBD II system. The diagnostic trouble codes on 1995 OBD I systems can be read by grounding test terminal 6 . The terminal is most easily grounded by connecting it to terminal 5 (internal ECM ground).
  3. Once the terminals have been connected, the ignition switch must be moved to the ON position with the engine not running.
  4. The Service Engine Soon or Check Engine light should be flashing. If it isn't, turn the ignition OFF and remove the jumper wire. Turn the ignition ON and confirm that light is now on. If it is not, replace the bulb and try again. If the bulb still will not light, or if it does not flash with the test terminal grounded, the system should be diagnosed by an experienced driveability technician. If the light is OK, proceed as follows.
  5. The code(s) stored in memory may be read through counting the flashes of the dashboard warning lamp. The dash warning lamp should begin to flash Code 12. The code will display as one flash, a pause and two flashes. Code 12 is not a fault code. It is used as a system acknowledgment or handshake code; its presence indicates that the VCM can communicate as requested. Code 12 is used to begin every diagnostic sequence. Some vehicles also use Code 12 after all diagnostic codes have been sent.
  6. After Code 12 has been transmitted 3 times, the fault codes, if any, will each be transmitted 3 times. The codes are stored and transmitted in numeric order from lowest to highest.
The order of codes in the memory does not indicate the order of occurrence.
  1. If there are no codes stored, but a driveability or emissions problem is evident, the system should be diagnosed by an experienced driveability technician.
  2. If one or more codes are stored, record them. Refer to the applicable Diagnostic Code chart in this section.
  3. Switch the ignition OFF when finished with code retrieval or scan tool readings.
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MAP sensor tests:
TESTINGSee Figures 1, 2 and 3

jturcotte_2349.gif

Fig. Fig. 1: Typical Manifold Absolute Pressure (MAP) sensor wiring diagram (wire color, terminal identification/location may vary on certain models)

  1. Backprobe with a high impedance voltmeter at MAP sensor terminals A and C .
  2. With the key ON and engine off, the voltmeter reading should be approximately 5.0 volts.
  3. If the voltage is not as specified, either the wiring to the MAP sensor or the VCM may be faulty. Correct any wiring or VCM faults before continuing test.
  4. Backprobe with the high impedance voltmeter at MAP sensor terminals B and A .
  5. Verify that the sensor voltage is approximately 0.5 volts with the engine not running (at sea level).
  6. Record MAP sensor voltage with the key ON and engine off.
  7. Start the vehicle.
  8. Verify that the sensor voltage is greater than 1.5 volts (above the recorded reading) at idle.
  9. Verify that the sensor voltage increases to approximately 4.5. volts (above the recorded reading) at Wide Open Throttle (WOT).
  10. If the sensor voltage is as specified, the sensor is functioning properly.
  11. If the sensor voltage is not as specified, check the sensor and the sensor vacuum source for a leak or a restriction. If no leaks or restrictions are found, the sensor may be defective and should be replaced.
jturcotte_2350.gif

Fig. Fig. 2: Using jumper wires and a high impedance voltmeter test between MAP sensor terminals A and C with the key ON and engine off. The voltage should be approximately 5 volts


jturcotte_631.jpg

Fig. Fig. 3: Next test between MAP sensor terminals A and B with the key ON and engine off. The voltage should be approximately 0.5 volts

MAP sensor
jturcotte_632.jpg

Throttle position sensor test
TESTINGSee Figures 1, 2 and 3

  1. Backprobe with a high impedance voltmeter at TPS ground terminal and 5 volt reference signal terminal.
  2. With the key ON and engine off, the voltmeter reading should be approximately 5.0 volts.
  3. If the voltage is not as specified, either the wiring to the TPS or the VCM may be faulty. Correct any wiring or VCM faults before continuing test.
  4. Backprobe with a high impedance voltmeter at the TP signal terminal and the sensor ground terminal.
  5. With the key ON and engine off and the throttle closed, the TPS voltage should be approximately 0.5-1.2 volts.
  6. Verify that the TPS voltage increases or decreases smoothly as the throttle is opened or closed. Make sure to open and close the throttle very slowly in order to detect any abnormalities in the TPS voltage reading.
  7. If the sensor voltage is not as specified, replace the sensor.
jturcotte_2352.gif

Fig. Fig. 1: Common Throttle Position Sensor (TPS) wiring diagram (wire color, terminal identification/location may vary on certain models)





jturcotte_2353.gif

Fig. Fig. 2: Using jumper wires and high impedance voltmeter, test between the sensor ground and reference terminals, the voltage should be approximately 5 volts


jturcotte_2354.gif

Fig. Fig. 3: Next test between the sensor signal and ground terminals, verify that the TPS voltage increases or decreases smoothly as the throttle is opened or closed

Oct 01, 2011 | 1994 Chevrolet S-10 Blazer

1 Answer

Ran an ecu fault code reader on my focus and it shows up beromatric low presure what is this ?


Hi there,

If you are correct with your code reader, this condition should trigger fault code: P0107.

This relates to your MAP/BARO Sensor's signal voltage is too low (below 0.25v).

This condition will cause all sorts of engine running issues....

First, using your scan tool with the Key on and engine running, monitor the MAP Sensor voltage. If it is reading less than 5 volts, turn engine off, unplug the MAP sensor and, using a DVOM (Digital Volt/Ohm Meter) check for 5Volts on the 5 Volt reference circuit.


1. If there is not 5 Volts on the reference circuit, then check for the reference voltage at the PCM connector. If it is present at the PCM connector but not the MAP connector, repair the open in the wiring loom between the PCM and MAP harness connector.


If 5 Volt reference is NOT present at the PCM connector, check powers and grounds of PCM and repair/replace as needed.


2. If you have a 5 Volt reference at the MAP connector, jumper the 5 volt reference circuit to the signal circuit. Now check the MAP voltage on the scan tool. It should be 4.5 to 5 Volts. If it is, replace MAP sensor. If not, repair open/short in the signal circuit wiring and re-check.


3. If all appears okay, perform a wiggle test. Start engine and manipulate the harness, connector and tap on the MAP sensor. Note any changes in voltage or engine speed. Repair connector, harness, or sensor as needed.


4. If the wiggle test checks out, use a vacuum pump (or just use your lungs) to draw a vacuum on the MAP sensor vacuum port. As you add vacuum the voltage should decrease. With no vacuum, the MAP sensor should read approximately 4.5 volts. If there is no change in MAP sensor reading on the scan tool, replace MAP sensor.



Cheers,

Sep 05, 2011 | 2001 Ford Focus

1 Answer

95 cadillac reading code current p105 sometimes engine light comes on sometimes harder to start than normal, idles up and down up on stopping


Symptoms Symptoms of a P0105 check engine light code may include:
  • Poor running engine
  • Engine runs rich
  • Engine won't idle
  • Engine backfires through tailpipe
  • Engine misfire under load or at idle
  • MIL (Malfunction Indicator Lamp) illumination
  • In some extreme cases there may be no symptoms other than MIL illumination
Causes A P0105 DTC could be caused by:
  • MAP sensor vacuum hose disconnected or plugged
  • Bad MAP Sensor
  • Bad TPS
  • Damaged or problematic MAP sensor connector
  • Damaged or problematic TPS connector
  • Damaged wiring
  • Short to reference voltage on signal circuit of MAP Sensor
  • Loss of ground to MAP sensor or TPS
  • Open on signal circuit of MAP sensor
  • Bad PCM
Possible Solutions Using a scanner or code reader, turn the ignition on and engine OFF; what does the MAP sensor voltage read? It should be about 4 Volts for sea level. If you are at a higher altitude, it should decrease about half a volt or so for each 1,000 ft. of altitude (this will vary from model to model) Or if you have a separate MAF (Mass air flow) sensor on your vehicle, they are usually equipped with a Barometric pressure reading. If so, the Baro reading should match the MAP reading (they both measure ambient air pressure). If they're roughly equal, then, check for Freeze Frame data of the MAP sensor (if available).
NOTE: Freeze Frame data is the PCM recording a fault when it happens. It captures the readings of the various PIDS (parameter identifiers)available to troubleshoot what happened. It's like a recording of the problem as it happened. At idle a typical MAP sensor Voltage reading should be about a volt, and at WOT (wide open throttle) it should approach 4.5 to 5 Volts. As for the TPS, at idle, the voltage reading is about 1 Volt or less. As the throttle is opened the reading will increase to 4.5 Volts at WOT. Do the two readings make sense? For example, if the TPS reading on Freeze Frame data shows 2.5 Volts (indicating partial throttle) does the MAP sensor indicate a reading that isn't at either extreme? Using the Freeze Frame data (if available) compare the MAP reading to the TPS when the problem occurred. This can help you identify what happened
If you have no access to Freeze Frame data then check if the MAP sensor voltage changes when you apply vacuum to it. You can do this by mouth or a vacuum pump. The voltage should increase as you apply vacuum. If the reading doesn't change as you apply vacuum, make sure there are no obstructions in the hose to the sensor. If the hose is clear, the MAP sensor is usually bad, but it doesn't rule out the following from causing the problem: Does the MAP sensor appear to be stuck at less than .5 Volts? Then:
NOTE: This code shouldn't set if the MAP is stuck at extremely low voltage, however, I'm adding it in because there's no way to know for certain for which vehicles a low voltage condition may set a P0105
  1. Inspect the wiring harness and MAP sensor connector. Repair any damage
  2. Unplug the MAP sensor connector. Also, at the PCM connector, remove the MAP sensor signal wire and check for continuity to the MAP sensor connector. If there is infinite resistance, then repair open in MAP signal circuit. If the signal wire has continuity to the MAP sensor connector, then check for 5 volt reference voltage to the connector and a good ground. If both are present, then re-install all removed wiring and replace the MAP sensor.
Does the MAP sensor appear to be stuck at full 4.5 voltage? Then:
  1. Inspect the wiring harness for damage. Repair as needed
  2. Remove the MAP sensor signal wire from the PCM connector. With a voltmeter measure the voltage with KEY ON ENGINE OFF. Is there 4.5 Volts? If so, unplug the MAP sensor and recheck. If it is still present, then repair short between the signal wire and 5 volt reference wire.
  3. If unplugging the MAP sensor causes the voltage to disappear, check that the ground is intact. If it is, then replace the MAP sensor due to internal short.

Jun 17, 2011 | 1995 Cadillac DeVille

1 Answer

Code po105 pops up i had it reset and every 3-4 days it lights back up what does it mean ?


Generic code results from http://www.obd-codes.com/p0105 :

P0105 - MAP Circuit Malfunction

Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction

The MAP (Manifold Absolute Pressure) sensor is part of the fuel management system. It reacts to changes in engine manifold pressure. The PCM (Powertrain Control Module) monitors the MAP sensor continually to properly run the engine. Changes in engine load require changes in the amount of fuel injected, and timing of the ignition system, etc. An engine under load has more manifold pressure(or less vacuum) than an engine that is coasting. As the load changes, the MAP sensor voltage signal to the PCM changes accordingly. To check the MAP sensor operation, though, the PCM watches other sensors to verify that the MAP sensor is working properly.

For example, the PCM compares the TPS (Throttle Position Sensor) signal to the MAP signal to verify the MAP signal isn't "sticking". If the PCM doesn't see a MAP sensor change immediately follow a change in the throttle pedal sensor, it knows there is a problem with the MAP sensor and sets P0105. Or, if the PCM notices that the TPS indicates the engine is under load, but the MAP signal indicates that the engine is "coasting" it, again, knows there is a problem with the MAP sensor or TPS and sets P0105.

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Symptoms of a P0105 check engine light code may include:

  • Poor running engine
  • Engine runs rich
  • Engine won't idle
  • Engine backfires through tailpipe
  • Engine misfire under load or at idle
  • MIL (Malfunction Indicator Lamp) illumination
  • In some extreme cases there may be no symptoms other than MIL illumination

A P0105 DTC could be caused by:

  • MAP sensor vacuum hose disconnected or plugged
  • Bad MAP sensor
  • Bad TPS
  • Damaged or problematic MAP sensor connector
  • Damaged or problematic TPS connector
  • Damaged wiring
  • Short to reference voltage on signal circuit of MAP sensor
  • Loss of ground to MAP sensor or TPS
  • Open on signal circuit of MAP sensor
  • Bad PCM

Using a scanner or code reader, turn the ignition on and engine OFF; what does the MAP sensor voltage read? It should be about 4 Volts for sea level. If you are at a higher altitude, it should decrease about half a volt or so for each 1,000 ft. of altitude (this will vary from model to model) Or if you have a separate MAF (Mass air flow) sensor on your vehicle, they are usually equipped with a Barometric pressure reading. If so, the Baro reading should match the MAP reading (they both measure ambient air pressure). If they're roughly equal, then, check for Freeze Frame data of the MAP sensor (if available).

NOTE: Freeze Frame data is the PCM recording a fault when it happens. It captures the readings of the various PIDS (parameter identifiers)available to troubleshoot what happened. It's like a recording of the problem as it happened. At idle a typical MAP sensor Voltage reading should be about a volt, and at WOT (wide open throttle) it should approach 4.5 to 5 Volts. As for the TPS, at idle, the voltage reading is about 1 Volt or less. As the throttle is opened the reading will increase to 4.5 Volts at WOT. Do the two readings make sense? For example, if the TPS reading on Freeze Frame data shows 2.5 Volts (indicating partial throttle) does the MAP sensor indicate a reading that isn't at either extreme? Using the Freeze Frame data (if available) compare the MAP reading to the TPS when the problem occurred. This can help you identify what happened

If you have no access to Freeze Frame data then check if the MAP sensor voltage changes when you apply vacuum to it. You can do this by mouth or a vacuum pump. The voltage should increase as you apply vacuum. If the reading doesn't change as you apply vacuum, make sure there are no obstructions in the hose to the sensor. If the hose is clear, the MAP sensor is usually bad, but it doesn't rule out the following from causing the problem: Does the MAP sensor appear to be stuck at less than .5 Volts? Then:

NOTE: This code shouldn't set if the MAP is stuck at extremely low voltage, however, I'm adding it in because there's no way to know for certain for which vehicles a low voltage condition may set a P0105.

  1. Inspect the wiring harness and MAP sensor connector. Repair any damage
  2. Unplug the MAP sensor connector. Also, at the PCM connector, remove the MAP sensor signal wire and check for continuity to the MAP sensor connector. If there is infinite resistance, then repair open in MAP signal circuit. If the signal wire has continuity to the MAP sensor connector, then check for 5 volt reference voltage to the connector and a good ground. If both are present, then re-install all removed wiring and replace the MAP sensor.

Does the MAP sensor appear to be stuck at full 4.5 voltage? Then:

  1. Inspect the wiring harness for damage. Repair as needed
  2. Remove the MAP sensor signal wire from the PCM connector. With a voltmeter measure the voltage with KEY ON ENGINE OFF. Is there 4.5 Volts? If so, unplug the MAP sensor and recheck. If it is still present, then repair short between the signal wire and 5 volt reference wire.
  3. If unplugging the MAP sensor causes the voltage to disappear, check that the ground is intact. If it is, then replace the MAP sensor due to internal short.

Feb 27, 2011 | Jaguar X-Type Cars & Trucks

1 Answer

Engine dieing,replaced MAP sensor because of code 73,didn't fix.Cat has 77'000 miles. Feels like it is starving for fuel. It is an intermittent problem.


map code can be triggered for a bunch of reasons maybe its telling the truth about vaccum and you have none take oxygen sensor out of exhaust if engine runs better then cat could be pluged if not then you could be up the wrong tree also three wires 0n map sensor as follows one wire must have 5 or8 or 12 volts with the key on but not runnig other one should have continuity to the same colored wire on the tps the other should run back to yuour computer test continuity one that wire to computer

Jan 10, 2010 | 1992 Cadillac DeVille

1 Answer

MAP or MAF Sensor Diagram for 2005 Town&Country Touring Van 3.8l.


Yes it has a sensor and they are color coded however I don't think it's called a maf or map sensor that’s a GM name, there would be three wires on it on ground one 5 volts reference and one for connection to the computer to tell the computer how much air flow there is, and the reading would be from 1.5 volts to 4 volts.

Jun 20, 2009 | 2005 Chrysler Town & Country

1 Answer

Map sensor pin arrangement dodge cavan 2003


Hello, here is a picture of the connector and wiring.

85cdf8a.gif MANIFOLD ABSOLUTE PRESSURE SENSOR (GAS) - BLACK 3 WAY CAV CIRCUIT FUNCTION 1 K1 18VT/BR (3.3L/3.8L) MANIFOLD ABSOLUTE PRESSURE SENSOR SIGNAL 1 K1 18VT/BR (2.4L) MAP SIGNAL 2 K900 18DB/DG SENSOR GROUND 3 F855 18PK/YL 5 VOLT SUPPLY

Pink/Yellow is #3, Blue is #2, and Purple is #1. Your colors may appear slightly different

Oct 06, 2008 | 2003 Dodge Grand Caravan AWD

1 Answer

Map Sensor


one wire gos signal,5 volt, other gos 12 volt. other to ground need a wire diagram to determine which one is

Sep 05, 2008 | 1994 Chevrolet S-10

1 Answer

Map Sensor Wires Question


Answer:

On a 3-wire MAP sensor connector when looking at the vehicle "wiring harness mating side of the connector" (and not the sensor connector) - with the snap detent pointing UP and looking LEFT to RIGHT the signals will read >

GROUND > MAP SIGNAL > POWER


Hopefully we are talking about a MAP sensor, and NOT a MAF sensor as the 2 are different as to the wiring signals.

Color of the wires doesn't matter, as you are just looking for backprobed voltage SIGNALS only using an adapter if you are doing in-circuit signal testing.

POWER I believe should be in the 5-volt range unless Jeep is using 3.3-volt.

Usually the MAP SIGNAL voltage range is quite a bit lower on the sense line, but with Jeep you never know? If using a good DVM measuring the MAP SIGNAL voltage you should see a smooth decrease in voltage as the vacuum is increased. If there is no voltage change or negative swing then the sensor may either be bad or else you have an OPEN or SHORTED wire between one of the 3 connector leads and the PCM computer, which would be rare.

I take you are troubleshooting a specific CHECK ENGINE CODE hopefully, as if not I would have the PCM read properly with a good CAN OBD II code reader to pinpoint the troublesome sensor.

I've always used an ACTRON CP9087 Sensor Tester, and a CEN-TECH 94169 CAN OBD II code reader which works great for me.

Make sure your MAP vacuum line is good and hooked up right as well.

Let me know what you find?

Thx,

Frank

Jul 10, 2008 | 2003 Jeep Grand Cherokee

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