Mass Air Flow Sensor Wiring Diagram

Mass air flow sensor wiring schematic. If the maf is bad either because its not producing a signal or producing an erratic one the cars idle will return to normal and the car will seem to run fine.

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It can be seen in the wiring diagram above.

Mass air flow sensor wiring diagram. The primary components of the maf sensor are thermistor a platinum hot wire and an electronic control circuit. Please be sure to leave positive feedback as this is the only way i receive credit for my work and time. F150 f250 f350 mustang crown victoria.

The mass air flow sensor is often the likely culprit if your car isnt running as it should. If the maf isnt working properly. Maf sensor wiring diagram 19971998 1999 ford 46l 54l.

Shouldnt the mass air flow sensor dictate the voltage going out to the ecm. Hi there pin 5 the yellow wire with blue tracer mark is the intake temperature sensor input wire off the mass air flow sensor. Autozone repair guide for your engine performance emission controls connector pin identification mass air flow maf sensor connector.

If the specified value is obtained but dtc memory has a dtc concerning mass air flow maf sensor check the voltage supply of the mass air flow maf sensor. The most common way to test the 5 wire vw mass air flow maf sensor is just to unplug it with the engine running. My mass air flow sensor on an 88 camaro 28 reads 5 volt reference between signal and ground while running and unplugged on the ecm side at idle.

Its job is to keep track of the amount of air coming in through the air filter so that the ecu can adjust the amount of fuel getting into the engine. While plugged in there is erratic non detectable voltage onoff onoff. The mass air flow sensors converts the amount of air drawn into the engine into a voltage signal.

The following schematic shows a typical circuit diagram of the mass air flow maf sensor system. Maf sensor gets power from the pcm power relay red wire. The lt blured wire outputs the maf signal to the pcm.

Learn how this device is connected to the ecm and vehicle electronics in general. If the specified value is not obtained check the wires of the mass air flow maf sensor. The maf or mass air flow sensor is a main input to the ecm or engine computer form air intake temperature and flow.

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