how to test mass air flow sensor with scanner

The affected part may be the mass airflow sensor or throttle body. These codes indicate an issue with the fuel and air metering system.

How To Know If Maf Sensor Is Bad Or Good Test Mass Air Flow Sensor Code P0102 Youtube

Stop the engine and reconnect the connector for the mass airflow sensor harness.

. You can use an onboard diagnostics scanner to read the code from the engine control unit. Check to see that DTC P0102 is shown. Turn the ignition switch to the Off position.

You can test the mass air flow sensor using a scanner or a voltmeter. Ford has used a Hot-Wire type mass air flow sensor for many years that. MASS AIR FLOW SENSOR TEST Scanner Used in the video.

Set your DMM to the Frequency scale. Plug in the MAF sensors electrical connector. While pulling the connector squeeze the tab on either side of the harness.

How to cast. Start your cars engine and allow it to idle for at least 5 seconds before continuing. I recommend using a digital multimeter but an analog multimeter can also be used.

Connect the black lead of the multimeter to the ground terminal of the battery or chassis and the red one to. In the case of the MAF sensor the code will be between P0100 to P0199. Again with the most common cause of a lean code on this engine would be the mass air flow sensor provided there are no air or vacuum leaks under the hood.

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. Take apart your air intake system and find the MAF sensor. Use the key included in your new MAF sensor to slide out the old sensor from the box.

Install the air filter box back in place and screw in the bolts. Testing a MAF sensors frequency signal. The mass air flow sensor MAF has become a standard part on most engine applications and is mounted in the intake air stream just past the air filter.

Delete the DTC memory from your computer. All you need is a multimeter. Make sure you only pull on the connector and not the wires.

Cheap pontoon boats for sale in iowa. How it Works. This is because the ECU will detect an out of range value coming from the MAF sensor and the check engine light is its way of letting you know that something is wrong.

It measures the amount of air volume in the intake flow by way of a thin wire mounted in the air stream. Disconnect the connector of the MAF sensor. The intake consists of a series of tubes usually plastic but sometimes metal.

Set the multimeter to 20 volts. A bad mass air flow sensor will usually trigger a check engine light. Remove your engine air filter then locate the MAF sensor somewhere between the filter and the engine.

Reconnect your electrical plug to the new MAF sensor. Put your new sensor and make sure it is in place. In my Ford van the mass air flow sensor sits right behind the air filter and is easy to reach.

Disconnect the connection for the mass airflow sensor harness. Remove the plug and loosen the bolts on the air filter box and lift it up. Open the hood of the car.

HOW TO KNOW IF MAF SENSOR IS BAD. Httpsamznto2DTTDuJEngine light is often triggered by bad or dirt. If your hands slip off the connector it is good to wear gloves with a.

See your meter users manual if necessary to connect the red lead to the correct jack on your meter. Check Engine Light appearing on the dashboard. This wire is heated by the MAF with a pre-calculated voltagecurrent value.

The Mass Air Flow Sensors Power Wire Test. Free pitbull puppies in nc. Disconnect the mass airflow sensor from the electrical connector.

Mass Air Flow Sensor Maf Automotive Illustrated Glossary