how to test mass air flow sensor with scanner

Duramax - Mass Air-Flow Sensor Troubleshooting Maintenance Back about the time the auto makers began using electronic fuel injection they discovered that for the onboard computer to correctly calculate the fuelair ratio they needed to measure the incoming air flow to the engine I got lazy with the camshaft intake position sensor PositionMass Airflow Sensor Replacement. You can use an onboard diagnostics scanner to read the code from the engine control unit.

How To Clean Your Mass Air Flow Sensor Fixd Best Obd2 Scanner

The intake consists of a series of tubes usually plastic but sometimes metal.

. Black smoke coming out of the tailpipe. Lack of power on acceleration. First enter in KOEO mode and lock the MAF sensor related data on the display.

Mass Air Flow Sensor live test. You can test the mass air flow sensor using a scanner or a voltmeter. Take apart your air intake system and find the MAF sensor.

Ford has used a Hot-Wire type mass air flow sensor for many years that. Chevy Buick Olds GMC Cadillac The frequency specification I quote in this video will differ depending on engine size but the electrical tests shown particularly in part 2 are universal and apply to. MASS AIR FLOW SENSOR TEST Scanner Used in the video.

In my Ford van the mass air flow sensor sits right behind the air filter and is easy to reach. Mass Air Flow MAF Sensor Circuit Low Input. I solved the problem.

All you need is a multimeter. Its rare for the mass air flow MAF sensor to go bad and not leave a diagnostic trouble code but sometimes. HOW TO KNOW IF MAF SENSOR IS BAD.

Wont pass the emissions test. A common sign of a failing mass airflow sensor is when the engine throws a code via the check engine light. 5L Nissan Pathfinder 2001-2003 Mass Air Flow MAF Sensor Test 3.

Connect the MAF sensor to the connector. Httpsamznto2DTTDuJEngine light is often triggered by bad or dirt. While pulling the connector squeeze the tab on either side of the harness.

The Mass Air Flow Sensors Signal Wire Test Turn the ignition of the car off. If the check engine light is on use an OBD2 scanner to read the codes and clear them in stored status. Plug in the MAF sensors electrical connector.

Testing the Ford mass air flow MAF sensor on all of the Ford Lincoln and Mercury cars and trucks is a very simple test that can be done without a scan tool. First enter in KOEO mode and lock the MAF sensor related data on the display. Mass Air Flow MAF Sensor Circuit High Input.

Using an automotive diagnostic scanner you can perform a MAF live test. When the check engine light goes on it indicates that there is a problem requiring your attention. MASS AIR FLOW SENSOR TEST Scanner Used in the video.

Connect the black lead to the negative terminal of the battery or chassis and red lead to the signal terminal of the MAF. I recommend using a digital multimeter but an analog multimeter can also be used. The temperature of the hot film is controlled by the ECM a certain amount.

The procedures shown in this video can be applied to all 3-wire General Motors MAF sensors. Set your DMM to the Frequency scale. Remove your engine air filter then locate the MAF sensor somewhere between the filter and the engine.

How to test a GM MAF Sensor Part 1 Watch on.

Diagnosing A Failing Mass Airflow Maf Sensor